rfi multicoupling

the RFIMulticouplingCatalogue

Multicoupling Systems 4T-Pass® 9

Hybrid Multicoupling 46

Receiver Multicouplers 50Preselectors 51

Distribution Systems 72Tower Mounted Systems 79

Cavity Filters 84Cavity Accessories 101Cavity Mechanics 102

Duplexers 103

Rebroadcast Systems 129

System Products 139Crossband couplers 140

Hybrid/Directional couplers 144Isolators/Circulators 150

Low Pass/Harmonic Filters 153Power Dividers/Splitters 155

RF Loads 157RF Terminators 159RF Attenuators 160

Engineering Services 162

Mounting Hardware 165

Tech Support 172

4

MulticouplingSystems

There are two major components in typical multi-channelmulticoupling systems - Transmitter Multicouplers (Combiners) andReceiver Multicouplers.

In our Transmitter Multicoupler range, RFI offers the outstanding T-Pass®technology that delivers unparalleled levels of performance, expandability,and frequency flexibility. We also offer other harnessed cavity filter andhybrid coupler based designs. Our Receiver Multicoupler range includescavity filter and combline based receiver preselectors, and low-noise high-performance preamplifiers with expandable multichannel distributioncapability.

We supply multicoupling configurations for single or multiple antennasystems and single or multiband multicoupling to suit distributed antennaand radiating cable systems for in-building and in-tunnel communications.

RFI have a respected expertise in multicoupling systems design and withour unique design/R&D/manufacturing capability we can providecustomised solutions to suit any application.

A sampling of our standard product is shown in this catalogue and we cansupply products for most frequencies - from below 30MHz to over2400MHz. If you require a multicoupling system solution not shown in thiscatalogue, please do not hesitate to contact your local RFI sales office forfurther assistance.

5

Multicouplers

GeneralRFI can provide a range of multicoupling technologies to satisfy mostrequirements. We offer the outstanding T-Pass®, hybrid coupler and harnessedmulticoupler designs. We can also provide system designs that incorporate acombination of these technologies to ensure that we provide you with the bestoverall solution - whatever your requirements.Over many years RFI has developed an industry-leading expertise in the designand manufacturing of multicoupling systems. This background enables us toprovide solutions to satisfy a range of diverse applications - from simple singlechannel installations through to the most complex of multi-channel and multi-bandsystems applications.

T-Pass®The U.S. patented T-Pass® multicoupling technology is available for mostfrequency bands from 66 to 1000MHz offering unprecedented design andinstallation flexibility within the bandwidth of the antenna or distribution systemchosen. T-Pass® multicouplers utilise innovative three-port bandpass cavities andferrite isolators to provide unique advantages over ordinary cavity/ferritecombiners.However, unlike ordinary cavity/ferrite combiners, T-Pass® multicouplers areinherently expandable, broadband and easily adaptable to the most difficultsimplex and/or duplex system design requirements.Note: For a full introduction to T-Pass® technology please refer to the TechnicalSupport section at the rear of this catalogue or visit our web site at www.rfi.com.au

Â Superior Expandability and BandwidthOrdinary cavity/ferrite combiners rely upon quarterwave cable transformers,resonant stubs and star junctions for combining groups of two or more channels.Mechanical problems quickly develop in the process of trying to locate severalgroups of cavities in close proximity to each other. Additionally, because of thefrequency-sensitive, narrowband nature of the cable transformers, operatingbandwidths are usually restricted to about 6% of system centre frequency.While larger bandwidths can be managed in such combiners, system losses risedue to harness mismatches. The broader the operating bandwidth the moresevere this mismatch becomes with power being dissipated as heat in allcomponents of the combiner.T-Pass® multicoupler systems can be started at any numbers of channels (evenone) and can be expanded one or more channels at a time with factory-tuned,easy-to-install expansion channel assemblies. Expansion is usually accomplishedwithout modifications to the existing system and typically requires nothing morethan adding each new channel assembly, in any position. New channelfrequencies can be above, below, or between any existing channel frequencies(any order).T-Pass® channel interconnect cables are optimised to their own channelfrequency. No compromises are necessary to accommodate other channelfrequencies. Channel frequencies can therefore span across a very broadfrequency range.

6

Multicouplers

Superior Flexibility of DesignThe nature of T-Pass® combining makes it easy to tailor each individual channel’sfrequency response to satisfy the most challenging simplex, duplex, transmit,receive or combined transmit/receive requirements.Bandpass, Vari-Notch® or Series-Notch® cavity filters can be added to the T-Pass® cavity to provide tailored responses on any individual channel in thecombiner. Such multi-cavity channels can be integrated into systems as easily asstandard single cavity channels and T-Pass® expandability is fully retained insystems where multi-cavity channels are used.

Â Predictable T-Pass® System PerformanceT-Pass® channel insertion loss consists of the same components as ordinarycavity/ferrite combiner loss: cavity loss at resonance, isolator forward loss, cableloss, and a selectivity-dependent "bridging loss" that is due to the interactionamong channel filters.The predictable behaviour of T-Pass® channels allows systematic determinationof system insertion loss.

Â ApplicationsT-Pass® multicoupler systems are ideal in a wide variety of analogue and digitalcommunications applications including, but not restricted to the following;

• Multi-User radio sites containing co-located VHF, UHF, 800 and 900MHzequipment.

• Radio Paging, Wireless Data and other data transmission systems.

• Multi-Channel VHF and UHF radio-telephone systems(i.e. MTS, IMTS, NMT-450 cellular, rural), base stations and repeaters.

• VHF, UHF, 800 and 900MHz trunking systems;

• 220MHz, ACSB trunking systems.

• Radio Links, VHF, UHF, 800 and 900MHz SCADA, telemetry, control, and datatransmission systems.

• Multi-channel, multi-band multicoupling systems for in-building and in-tunnelcommunications systems.

Â Long-term dependability and SupportSince their introduction, T-Pass® multicoupler systems have become thepreferred choice of many government agencies, commercial site owners andoperators throughout the world. Expansion channels are regularly sold forsystems that were originally installed more than twenty years ago.

Â Customised SolutionsSystems are designed and constructed in our factory from a piece part level. Thisbuilding-block approach allows the customisation of unique solutions to anyapplication’s requirements. The modular nature of our product range providesunprecedented flexibility.

7

Multicouplers

Â Rugged, High Quality ConstructionAll T-Pass® systems are built utilising TX RX Systems' field-proven, temperature-compensated cavities. Setting cavity insertion loss is facilitated by the provisionof adjustable silver plated coupling loops. The combinations of heavy-gaugealuminium outer conductor, thick heliarc-welded cavity top plates, silver plating onmicrofinished tuning assemblies and Invar based temperature compensationresults in high performance and excellent long-term reliability.The isolators used within T-Pass® systems provide superior isolation and lowinsertion loss under continuous power. All isolator loads are conservatively ratedfor continuous operation at maximum specified power.As standard, cavity and isolator connectors are N-type with non-ferro magneticplatings and all connecting cables are made with high quality, double-shielded andsilver-plated cable to provide superior intermodulation performance at high systempower levels.

Â Compact Peg Rack™ Mounting SystemWe recommend the unique Peg Rack mounting of standard T-Pass® multicouplersystems. Peg Racks can securely hold more channels per given volume thanstandard 483mm (19”) racks or cabinet mounting arrangements.Peg racks also allow unrestricted access to all system components, facilitatingsimpler installation, expansion and maintenance.Various 483mm (19”) rack mounting styles are also available for those applicationswhere standardised racking is a site requirement.

Â Additional InformationSee the Seminar Subjects papers located on our website, www.rfi.com.au,for additional information on T-Pass® multicoupler systems.

Harnessed "Star" Combiners"Star" combiners typically utilise a multi-port junction to join several bandpasscavities together. Each cable in the harness is a length representing the mean ofall of the frequencies combined.As a result, the accuracy of matching across a broad bandwidth is limited, withinsertion losses rising accordingly.In some applications that utilise limited channels such as small in-plant systemswith only a few channels spread across a narrow span of spectrum, the use ofharnessed combiners may be recommended - despite their limited expansioncapabilities and restrictive bandwidth.Also, some systems may be designed around smaller filter types which are notoffered in T-Pass® configurations. In such cases, the use of a Star Combiner maybe a space-efficient proposition for specific applications.RFI offers multi-channel Star Combiner systems and supports their use inapplications where their limitations do not compromise system design andperformance objectives - or future expandability. As such, each system is usuallycustom designed, manufactured and tuned to specific characteristics.

8

Multicouplers

Hybrid Coupler CombinersRFI supply hybrid coupler based transmitter multicouplers in a range of frequencybands and input power ratings to suit many different applications.A hybrid coupler is a multi-port device that provides an alternative to cavity filtercombining techniques.Single or multiple hybrid couplers can be used to construct a frequency agilecombiner that can accommodate very close frequency spacings - even adjacentchannels! A portion of the input power of each channel is dissipated within thecombiner loads, thus insertion losses are higher when compared to a cavitybased combiner.Compatibility with frequency agile equipment such as trunking and militarysystems and the ability to accommodate closely spaced channel frequencies arethe key features of a RFI Hybrid Coupler Combiner system.In addition, hybrid coupler based multicouplers may often be constructed intosmaller areas than traditional cavity based equivalent multicoupler systems. Asa result, hybrid coupler multicouplers are particularly suited to in-plant systemsutilising few RF channels and where small size is often a desirable prerequisite.Each input port accepts any channel frequency within the operational rangewithout the limited tuned bandwidth restrictions of cavity based combiners,making it ideal for digital, wideband and frequency hopping technologies as wellas conventional analogue systems. Quality design and manufacturing ensures that these systems provide reliablelong term operation.Hybrid combiners are available in most frequency bands in standard modelconfigurations of two to six channels that use industry standard flush front mount3RU enclosures. Larger channel capacities and multi-band models are availableupon request.

SummaryRFI design, manufacture and supply one of the most extensive ranges ofmulticoupling technologies in today’s marketplace.Please contact RFI to discuss your combining requirements and to identifywhether a T-Pass®, Star or Hybrid combiner will provide the best overall solutionfor your application.Utilising the many combining technologies available in our product range, we cansupply an off-the shelf or customised multicoupler solution to suit any application.

This catalogue represents a sampling of our multicoupling products and services.

If the multicoupling solution you are looking for isn't here,please contact your nearest RFI sales office for further assistance!

www.rfi.com.au9

66-88 MHz

T-Pass® Expandable Multicouplers

T-Pass® expandable transmitter multicouplers are ideally suited toVHF base station applications. Each channel comprises of a singlecavity filter and a dual isolator. This configuration is for systemsemploying separate transmit and receive antennas.

• Superior full-band expandability

• Flexibility of design configuration

• Suitable for narrow/wideband channels

• Low insertion loss at minimum separations

• RFI Systems support

• Rugged, high quality design

• Peg Rack and other mounting styles available

TP0608 Series T-Pass®(Shown Peg Rack mounted)

Model No.Transmit only

TP0608-1612-11 TP0608-1112-11

Frequency Range 66-88 MHz

Cavity Type and Diameter ¼ wave, 6.625” (168mm) ¼ wave, 10” (254mm)

Maximum Continuous Transmit Power 150W (higher rating available)

Dual Isolator Load Power (Continuous)(Single Isolator versions available) 150W

Minimum Tx-Tx Separation @ Cavity Loss 90 KHz @ -1.5 dB50 KHz @ -2.5 dB

70 KHz @ -1.5 dB35 KHz @ -2.5 dB

Typical Tx-Tx Isolation @ Minimum Separation 80 dB

Typical Antenna-Tx Isolation 70 dB

Typical Tx Noise suppression Dependent on cavity insertion loss (See Curves)

Nominal Input Impedance 50 Ohms

Maximum Input return loss (VSWR) -20 dB (1.22:1)

Temperature Range -30° to +60° C (-22° to + 140° F)

Connectors, Input and Antenna N female

Mechanical Mounting Refer Mounting Hardware section

Dimensions (Typical per-channel) Refer Cavity Mechanics section

Weight (Typical per-channel) 11.3Kg (25lbs) 16.3Kg (36lbs)

Shipping Standard packaging - One channel per cartonMay be shipped pre-assembled in Peg Rack or 483mm (19”) rack kit (ordered separately)

Technical Specifications

www.rfi.com.au10

66-88 MHz


T-Pass® Tx Noise Suppression vs. Cavity LossThe curves shown below for Tx noise suppression represent the selectivity of typical quarterwave, 168mm (6.625inch) and 254mm (10 inch) T-Pass® cavity filters. Because T-Pass® cavities exhibit high loaded Q factors,excellent noise suppression and channel-to-channel isolation are achieved with 168mm (6.625 inch) cavities ata minimum separation of 50KHz. Additional cavities can be cascaded onto any channel(s) in a T-Pass® systemto customise an individual channel’s response if required.

Typical T-Pass® Channel Performance - 168mm (6.625 inch) 66-88 MHz

Typical T-Pass® Channel Performance - 254mm (10 inch) 66-88 MHz

0.01 0.1 1 10Offset from Fo (MHz)

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Tx Noise SuppressionChannel Insertion Loss

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Loss (dB) vs. No. of channels

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1 MHz

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-3.2 -3.3 -3.6 -4.0

125 KHz -3.3 -3.7 -4.0 -4.3

100 KHz -3.4 -3.8 -4.2 -4.6

75 KHz -3.6 -4.2 -4.7 -5.0

50 KHz -2.0 135W -3.8 -4.9 -5.4 -5.8

Tx-to-TxSeparation

Cavity Loss(dB)

MaxPower


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-3.2 -3.4 -3.6 -4.0

125 KHz -3.5 -3.9 -4.4 -4.7

100 KHz -3.6 -4.3 -4.8 -5.1

75 KHz -2.0 135W -4.1 -4.7 -5.3 -5.6

50 KHz -2.5 135W -4.7 -5.5 -6.3 -7.3

Note: The use of cavity multicouplers for combining multiple channels with minimum frequency spacings may result in undesirable levels of isolator loadheat dissipation due to interchannel coupling. Applications involving such requirements should be discussed with RFI prior to ordering to ensure the

optimum solution is provided.

66-88 MHz


T-Pass® expandable transmit/receive multicouplers are ideally suitedto the often challenging frequency plans for VHF base stationapplications. These channels utilise dual cavities to provide thetransmitter carrier and noise suppression required for use on single(shared) transmit and receive antennas or where additional transmitternoise or carrier suppression is required. Transmit channels may beordered complete with dual isolators.

• Suitable for single antenna systems

• Suitable for simplex or duplex channels

• Flexibility of design


• Low insertion loss



• Peg Rack and other mounting styles available TP0608 Series T-Pass®Receive/Transmit/Simplex channel

TP0608 Series T-Pass®Transmit only channel

Model No.Transmit only Receive / Transmit / Simplex

TP0608-2612-11 TP0608-2610-11


Cavity Type and Diameter ¼ wave, 6.625” (168mm)

Maximum Continuous Transmit Power 150W (higher ratings available)

Dual Isolator Load Power (Continuous)(Single Isolator versions available) 150W N/A

Minimum Channel Separation @ Cavity Loss 90 KHz @ -2.5 dB50 KHz @ -3.5 dB 2MHz typical

Typical Tx-Tx Isolation @ Minimum Separation 80 dB @ 50KHz Varies with minimum Tx-Rx spacing

Typical Tx Noise suppression Dependent on cavity insertion loss







Weight (Typical per-channel) 19Kg (41.8lbs) 16Kg (35lbs)



www.rfi.com.au11

Note: 254mm (10”) versions of the above models available for higher selectivity and lower loss applications.

www.rfi.com.au12

88-108 MHz


These T-Pass® expandable transmitter multicouplers are ideallysuited to the multicoupling requirements of low and medium power FMBroadcast applications. Each of the channels comprise of a singlecavity and a dual isolator to provide a narrow passband responsesuitable for narrowband modulation transmission. Higher powermodels are also available upon request.

• Ideal for narrowband broadcast radio


• Long-term reliability




TP0810 Series T-Pass®

Technical SpecificationsModel No.

Transmit only

TP0810-1612-11 TP0810-1112-11






70 KHz @ -1.5 dB35 KHz @ -2.5 dB



Typical Tx Noise suppression Dependent on cavity insertion loss (See Curves)







Weight (Typical per-channel) 10Kg (22lbs) 14Kg (34lbs)


T-Pass® Channel Insertion LossThe typical channel losses specified in the tables below are for equally-spaced channels only. Channel loss maybe higher or lower in multicouplers where Tx-Tx separation varies from one channel to another. Contact RFI forT-Pass® channel loss specifications based on your actual frequency plan.

T-Pass® Tx Noise Suppression vs. Cavity LossThe curves shown below for Tx noise suppression represent the selectivity of typical quarterwave, 168mm (6.625inch) and 254mm (10 inch) T-Pass® cavity filters. Because T-Pass® cavities exhibit high loaded Q factors, excellentnoise suppression and channel-to-channel isolation are achieved with 168mm (6.625 inch) cavities at a minimumseparation of 75KHz. Closer separations are achievable using 254mm (10 inch) cavities. Additional cavities can becascaded onto any channels in a T-Pass® system to customise an individual channel’s response if required.




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Cavity Loss(dB)

MaxPower


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1 KHz

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-3.2 -3.3 -3.6 -4.0

125 KHz -3.3 -3.7 -4.0 -4.3

100 KHz -3.4 -3.8 -4.2 -4.6

75 KHz -3.6 -4.2 -4.7 -5.0

50 KHz -2.0 135W -3.8 -4.9 -5.4 -5.8

Tx-to-TxSeparation

Cavity Loss(dB)

MaxPower


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-1.5 150W

-3.2 -3.4 -3.6 -4.0

125 KHz -3.5 -3.9 -4.4 -4.7

100 KHz -3.6 -4.3 -4.8 -5.1

75 KHz -2.0 135W -4.1 -4.7 -5.3 -5.6

50 KHz -2.5 135W -4.7 -5.5 -6.3 -7.3

www.rfi.com.au

88-108 MHz


13

Tx Noise Suppression




www.rfi.com.au14

88-108 MHz


A combination of T-Pass® and bandpass cavity filters with a dualisolator provide the broad passband response and transmit-transmitisolation required by wideband channel modulation. T-Pass®expandable transmit multicouplers are ideally suited to wideband FMradio broadcast applications.

• Ideal for wideband FM broadcast radio








TP0810-2612-11





Minimum Channel Separation @ Cavity Loss 200 KHz @ -2.5 dB100 KHz @ -3.5 dB

Typical Tx-Tx Isolation @ Minimum Separation 80 dB @ 100KHz

Typical Tx Noise suppression Dependent on cavity insertion loss







Weight (Typical per-channel) 17Kg (37.5lbs)




www.rfi.com.au15

108-136 MHz




T-Pass® expandable transmitter multicouplers are ideally suited to theoperations-critical applications of the VHF Aviation Band. Eachchannel utilises a single cavity and a dual isolator and are for use onsites configured with separate transmit and receive antennas.

• For dedicated transmit antenna systems

• Superior expandability






TP1013-1612-11 TP1013-1112-11




Dual Isolator Load Power (Continuous) 150 W


80 KHz @ -1.5 dB45 KHz @ -2.5 dB



Typical Tx Noise suppression Depends on Cavity Loss setting - see curves







Weight (Typical per-channel) 8.1Kg (18lbs) 11.1Kg (24.5lbs)


www.rfi.com.au16

108-136 MHz




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TP1013 Series model

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Cavity Loss(dB)

MaxPower


2 4 8 12

1 MHz

-1.5 150W

-2.6 -2.7 -3.0 -3.2

125 KHz -2.6 -2.9 -3.1 -3.4

100 KHz -2.9 -3.6 -4.0 -4.4

75 KHz -2.0 150W -3.5 -4.1 -4.6 -4.9

50 KHz -2.5 130W -4.1 -4.8 -5.4 -5.7

Tx-to-TxSeparation

Cavity Loss(dB)

MaxPower


2 4 8 12

1 MHz

-1.5 150W

-2.6 -2.7 -3.0 -3.3

125 KHz -2.7 -3.0 -3.3 -3.6

100 KHz -3.2 -4.0 -4.7 -5.1

75 KHz -2.0 135W -3.6 -4.2 -5.2 -5.6

50 KHz Use 10 inch cavities at this separation


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T-Pass® expandable transmit/receive multicouplers are ideally suitedto the operations-critical applications of the VHF Aviation Band. Eachchannel utilises dual cavities to provide the levels of transmitter carrierand noise suppression required for use on single (shared) transmit andreceive antennas. Transmit channels may be ordered complete withdual isolators.

• For single antenna systems






TP1013 Series T-Pass®Receive/Transmit/Simplex channel


Model No.Transmit only Receive/Transmit/Simplex

TP1013-2612-11 TP1013-2610-11




Dual Isolator Load Power (Continuous)(Single Isolator versions available) 150W N/A

Minimum Channel Separation @ Cavity Loss 100 KHz @ -2.5 dB60 KHz @ -3.5 dB 2.2MHz typical

Typical Isolation @ Minimum Separation 80 dB @ 60KHz Varies with minimum Tx-Rx spacing







Weight (Typical per-channel) 14.1Kg (31lbs) 12Kg (26.4lbs)



www.rfi.com.au

108-136 MHz


17


www.rfi.com.au18

132-174 MHz



T-Pass® expandable transmitter multicouplers are ideally suited toboth analogue and digital VHF voice, data and paging applications.The full band operation allows multiple services to share commonantennas, saving valuable tower space. Each channel utilises a singlecavity and dual isolator and are for use on sites configured withseparate transmit and receive antennas.

• Full band capability

• Ideal for both analogue and digital technologies

• Suits Trunking, Paging & PMR applications


• Simplifies site design

• RFI Systems records support



Transmit only

TP1317-1612-11 TP1317-1112-11Frequency Range 132-174 MHz





95 KHz @ -1.5 dB50 KHz @ -2.5 dB












www.rfi.com.au19

132-174 MHz




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TP1317 Series model

Tx-to-TxSeparation

Cavity Loss(dB)

MaxPower


2 4 8 12

1 MHz

-1.5 150W

-2.6 -2.7 -2.9 -3.1

125 KHz -2.9 -3.4 -3.8 -4.0

100 KHz -3.0 -3.7 -4.2 -4.5

75 KHz -2.0 150W -3.5 -4.2 -4.7 -5.0

50 KHz -2.5 130W -4.1 -5.0 -5.7 -6.1

Tx-to-TxSeparation

Cavity Loss(dB)

MaxPower


2 4 8 12

1 MHz-1.5 150W

-2.6 -2.7 -3.0 -3.3

125 KHz -3.3 -4.5 -5.3 -5.7

100 KHz -2.0 135W -3.6 -4.5 -5.2 -5.5

75 KHz -2.5 115W -4.3 -5.4 -6.2 -6.7

50 KHz Use 10 inch cavities at this separation


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132-174 MHz


20

T-Pass® expandable transmit/receive multicouplers are ideally suitedto the often challenging frequency plans of VHF base stationapplications. These channels utilise dual cavities to provide thetransmitter carrier and noise suppression required for use on single(shared) transmit and receive antennas. Transmit channels may beordered complete with dual isolators.

• Suits dual or single antenna systems

• Suits simplex or duplex systems









TP1317-2612-11 TP1317-2610-11




Dual Isolator Load Power (Continuous)(Single Isolator versions available) 150 W N/A

Minimum Channel Separation @ Cavity Loss 125 KHz @ -2.5 dB75 KHz @ -3.5 dB 2.5MHz








Weight (Typical per-channel) 10.5Kg (23.1lbs) 8.4Kg (18.5lbs)




www.rfi.com.au21

168-250 MHz




T-Pass® expandable transmitter multicouplers are ideally suited toVHF voice, data and paging applications. These channels utilise asingle cavity and dual isolator and are for use on sites configured withseparate transmit and receive antennas.

• European Trunking and PMR applications

• Broad bandwidth capability

• Simplifies site design



• Various mounting styles


TP1625-1612-11















Weight (Typical per-channel) 6Kg (13.2lbs)


www.rfi.com.au22

168-250 MHz


ApplicationsThe broad frequency expansion capability of T-Pass® technology provides a unique solution to the many variedapplications of multicoupling systems. The compatibility of T-Pass® with both analogue and digital protocols,and the ability to cater for narrow and wide channel bandwidths within the one multicoupler provides the systemdesigner with a unique solutions capability.

T-Pass® Tx Noise Suppression vs. Cavity LossThe curves shown below for Tx noise suppression represent the selectivity of typical quarterwave, 168mm (6.625inch) T-Pass® cavity filters. Because T-Pass® cavities exhibit high loaded Q factors, excellent noise suppressionand channel-to-channel isolation are achieved with 168mm (6.625 inch) cavities at a minimum separation of95KHz. Additional cavities can be cascaded onto any channels in a T-Pass® system to customise an individualchannel’s response if required.

TP1625 Series model

Tx-to-TxSeparation

Cavity Loss(dB)

MaxPower


2 4 8 12

1 MHz

-1.5 150W

-2.6 -2.7 -3.0 -3.3

250 KHz -2.9 -3.4 -3.8 -4.1

175 KHz -3.1 -3.9 -4.5 -4.9

125 KHz -2.0 135W -3.6 -4.4 -4.9 -5.3

100 KHz -2.5 115W -4.1 -4.5 -5.4 -5.8


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168-250 MHz


23

T-Pass® expandable transmit/receive multicouplers are ideally suitedto VHF base station applications. These channels utilise dual cavitiesto provide the transmitter carrier and noise suppression required foruse on single (shared) transmit and receive antennas. Transmitchannels may be ordered complete with dual isolators.












TP1625-2612-11 TP1625-2610-11





Minimum Channel Separation @ Cavity Loss 170 KHz @ -2.5 dB95 KHz @ -3.5 dB 3 MHz typical












www.rfi.com.au24

215-300 MHz




T-Pass® expandable transmitter multicouplers are ideally suited toVHF voice, data and paging applications. Each channel utilises asingle cavity and dual isolator combination and are for use on sitesconfigured with separate transmit and receive antennas.

• Ideal for Military, new PMR and Trunking bands

• Compact size ratio

• Excellent performance

• Flexible expansion capability

• Long-term dependability





TP2130-1612-11 TP2130-1112-11






140 KHz @ -1.5 dB75 KHz @ -2.5 dB










Weight (Typical per-channel) 5.1Kg (11.2lbs) 6.3Kg (14lbs)


www.rfi.com.au25

215-300 MHz


ApplicationsThe broad frequency expansion capability of T-Pass® technology provides a unique solution to the many variedapplications of multicoupling systems. The compatibility of T-Pass® with both analogue and digital protocols, andthe ability to cater for narrow and wide channels bandwidths within the one multicoupler, provide the systemdesigner with a unique solutions capability.



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-30

-25

-20

-15

-10

-5


TP2130 Series model

Tx-to-TxSeparation

Cavity Loss(dB)

MaxPower


2 4 8 12

1 MHz

-1.5 150W

-2.6 -2.7 -2.9 -3.1

250 KHz -2.8 -3.1 -3.4 -3.7

150 KHz -3.04 -3.8 -4.3 -4.6

100 KHz -2.0 150W -3.6 -4.5 -5.1 -5.5

75 KHz -2.5 130W -4.2 -5.1 -5.8 -6.2

Tx-to-TxSeparation

Cavity Loss(dB)

MaxPower


2 4 8 12

1 MHz

-1.5 150W

-2.6 -2.7 -3.0 -3.3

250 KHz -2.9 -3.4 -3.8 -4.1

175 KHz -3.1 -3.9 -4.5 -4.9

125 KHz -2.0 135W -3.6 -4.4 -4.9 -5.3

100 KHz -2.5 115W -4.1 -4.5 -5.4 -5.8


Atte

nuat

ion

(dB

)-55

-50

-45

-40

-35

-30

-25

-20

-15

-10

-5










www.rfi.com.au

215-300 MHz


26

T-Pass® expandable transmit/receive multicouplers are ideally suitedto VHF base station applications. These channels utilise dual cavitiesto provide the transmitter carrier and noise suppression required foruse on single (shared) transmit and receive antennas. Transmitchannels may be ordered complete with dual isolators.




• Suitable narrow/wideband channels








TP2130-2612-11 TP2130-2610-11













Weight (Typical per-channel) 8.1Kg (18lbs) 6Kg (13.2lbs)




www.rfi.com.au27

300-400 MHz



T-Pass® expandable transmitter multicouplers are ideally suited toboth analogue and digital UHF PMR and trunking applications. Thesechannels utilise a single cavity and dual isolator and are for use onsites configured with separate transmit and receive antennas.

• Ideal for Military, new PMR, Trunking and P25 bands

• Full bandwidth








Transmit only

TP3040-1612-11 TP3040-1112-11






150 KHz @ -1.5 dB75 KHz @ -2.5 dB












www.rfi.com.au28

300-400 MHz


ApplicationsThe broad frequency expansion capability of T-Pass® technology ideally suits the many varied requirements ofmulticoupling in analogue and digital applications. The compatibility of T-Pass® with both analogue and digitalprotocols, and the ability to cater to narrow and wide channel bandwidths within the one multicoupler, provide thesystem designer with a unique solutions capability.

T-Pass® Tx Noise Suppression vs. Cavity LossThe curves shown below for Tx noise suppression represent the selectivity of typical quarterwave, 168mm (6.625inch) and 254mm (10 inch) T-Pass® cavity filters. Because T-Pass® cavities exhibit high loaded Q factors, excellentnoise suppression and channel-to-channel isolation are achieved with 168mm (6.625 inch) cavities at a minimumseparation of 125KHz. Closer separations are achievable using 254mm (10 inch) cavities. Additional cavities canbe cascaded onto any channels in a T-Pass® system to customise an individual channel’s response if required.


Atte

nuat

ion

(dB

)

-55

-50

-45

-40

-35

-30

-25

-20

-15

-10

-5


TP3040 Series model

Tx-to-TxSeparation

Cavity Loss(dB)

MaxPower


2 4 8 12

1 MHz-1.5 150W

-2.4 -2.5 -2.8 -3.1

250 KHz -2.7 -3.2 -3.7 -4.0

125 KHz -2.0 150W -3.4 -4.4 -5.0 -5.5

75 KHz -2.5 125W -4.3 -5.6 -6.6 -7.1

Tx-to-TxSeparation

Cavity Loss(dB)

MaxPower


2 4 8 12

1 MHz-1.5 150W

-2.4 -2.6 -2.9 -3.1

250 KHz -2.9 -3.8 -4.4 -4.7

150 KHz -2.0 130W -3.6 -4.8 -5.6 -6.0

125 KHz -2.5 110W -4.1 -5.2 -6.0 -6.40.01 0.1 1 10

Offset from Fo (MHz)

Atte

nuat

ion

(dB

)

-55

-50

-45

-40

-35

-30

-25

-20

-15

-10

-5










www.rfi.com.au

300-400 MHz


29

T-Pass® expandable transmit/receive multicouplers are ideally suitedto both analogue and digital UHF base station applications. Thesechannels utilise dual cavities to provide the transmitter carrier andnoise suppression required for use on single (shared) transmit andreceive antennas. Transmit channels may be ordered complete withdual isolators.

• Ideal for Military, new PMR, Trunking and P25 bands

• Broad bandwidth






• Peg Rack and other mounting styles availableTP3040 Series T-Pass®

Receive/Transmit/Simplex channel



TP3040-2612-11 TP3040-2610-11

















www.rfi.com.au30

400-550 MHz



T-Pass® expandable transmitter multicouplers are ideally suited toUHF PMR and trunking applications. These channels utilise a singlecavity and dual isolator and are for use on sites configured withseparate transmit and receive antennas.

• Ideal for Trunking and PMR systems

• Ideal for high density sites

• Suited for use with broadband antennas

• Suits P25 digital systems





¼ Wave or ¾ Wave, 168mm (6”) or 254mm (10”)T-Pass® multicouplers for this popular UHF band are available using either ¼ or ¾ wavelength cavities in thechoice of 168mm (6.625”) or 254mm (10”) diameters. The selectivity of cavity filters is tightly linked to the volumeof the filter itself. With such a broad diversity of applications in this UHF band, all of these variants are offeredto ensure every system requirement is catered to.

Most T-Pass® multicoupling designs can be satisfactorily implemented using ¼ wave, 168mm (6.625”) cavities,but close channel spacings or a requirement to keep per-channel insertion losses to a minimum may determinethat the ¾ wave or 254mm (10’) models are more suited in a particular application. For assistance in choosingthe correct cavity for your requirements please contact your nearest RFI sales office.

T-Pass® Channel Insertion LossThe typical channel losses specified in the tables shown are for equally-spaced channels only. Channel loss maybe higher or lower in multicouplers where Tx-Tx separation varies from one channel to another. Contact RFI forT-Pass® channel loss specifications based on your actual frequency plan.

T-Pass® Tx Noise Suppression vs. Cavity LossThe curves shown for Tx noise suppression represent the selectivity of typical quarterwave, 168mm (6.625”) and254mm (10 inch) T-Pass® cavity filters. Because T-Pass® cavities exhibit high loaded Q factors, excellent noisesuppression and channel-to-channel isolation are achieved with 168mm (6.625”) cavities at a minimumseparation of 125KHz. Closer separations are achievable using 254mm (10 inch) cavities. Additional cavitiescan be cascaded onto any channels in a T-Pass® system to customise an individual channel’s response ifrequired.


Transmit only

TP4055-1612-11 TP4055-1112-11





Minimum Tx-Tx Separation @ Cavity Loss 250KHz @ 1.5dB175KHz @ 2.5dB

200KHz @ 1.5dB100KHz @ 2.5dB










Weight (Typical per-channel) 4.1Kg (9lbs) 4.7Kg (10.3lbs)


www.rfi.com.au

400-550 MHz


31

Tx-to-TxSeparation

Cavity Loss(dB)

MaxPower


2 4 8 12

1 MHz-1.5 150W

-2.2 -2.5 -2.8 -3.2

250 KHz -2.9 -4.1 -5.1 -5.7

150 KHz -2.0 130W -3.7 -5.3 -6.5 -7.2

125 KHz -2.5 110W -4.2 -5.8 -7.0 -7.7


Atte

nuat

ion

(dB

)

-55

-50

-45

-40

-35

-30

-25

-20

-15

-10

-5



Atte

nuat

ion

(dB

)

-55

-50

-45

-40

-35

-30

-25

-20

-15

-10

-5




Tx-to-TxSeparation

Cavity Loss(dB)

MaxPower


2 4 8 12

1 MHz-1.5 150W

-2.4 -2.6 -2.9 -3.1

250 KHz -2.9 -3.8 -4.4 -4.7

150 KHz -2.0 130W -3.6 -4.8 -5.6 -6.0

125 KHz -2.5 110W -4.1 -5.2 -6.0 -6.4







400-550 MHz



Transmit only

TP4053-1632-11 TP4053-1132-11


Cavity Type and Diameter ¾ wave, 6.625” (168mm) ¾ wave, 10” (254mm)




150 KHz @ -1.5 dB75 KHz @ -2.5 dB












www.rfi.com.au32


Atte

nuat

ion

(dB

)

-55

-50

-45

-40

-35

-30

-25

-20

-15

-10

-5


Tx-to-TxSeparation

Cavity Loss(dB)

MaxPower


2 4 8 12

1 MHz-1.5 150W

-2.4 -2.5 -2.8 -3.1

250 KHz -2.7 -3.2 -3.7 -4.0

125 KHz -2.0 150W -3.4 -4.4 -5.0 -5.5

75 KHz -2.5 125W -4.3 -5.6 -6.6 -7.1

Tx-to-TxSeparation

Cavity Loss(dB)

MaxPower


2 4 8 12

1 MHz-1.5 150W

-2.4 -2.6 -2.9 -3.1

250 KHz -2.9 -3.8 -4.4 -4.7

150 KHz -2.0 130W -3.6 -4.8 -5.6 -6.0

125 KHz -2.5 110W -4.1 -5.2 -6.0 -6.4


Atte

nuat

ion

(dB

)

-55

-50

-45

-40

-35

-30

-25

-20

-15

-10

-5










TP4055 ¼ Wave Series model

www.rfi.com.au

400-550 MHz


33

TP4053 ¾ Wave Series model



www.rfi.com.au34

400-550 MHz


T-Pass® expandable transmit/receive multicouplers are ideally suitedto both analogue and digital UHF voice and data applications. Thesechannels utilise dual cavities to provide the transmitter carrier andnoise suppression required for use on single (shared) transmit andreceive antennas. Transmit channels may be ordered complete withdual isolators.


• Broad bandwidth


• Excellent Performance




• Peg Rack and other mounting styles available TP4055 Series T-Pass®




TP4055-2612-11 TP4055-2610-11


Cavity Type and Diameter Quarterwave, 6.625” (168mm)



Minimum Channel Separation @ Cavity Loss 250 KHz @ -2.5 dB175 KHz @ -3.5 dB 5MHz








Weight (Typical per-channel) 6.1Kg (13.5lbs) 4Kg (8.8lbs)




www.rfi.com.au35

400-550 MHz


¼ wave or ¾ waveT-Pass® multicouplers in the 400-550MHz UHF band are available using either ¼ or ¾ wavelength cavities. ¾wave cavities provide a higher Q (or selectivity), and as such they can accommodate closer channel spacingsthan the ¼ wave models for a comparable insertion loss.Most T-Pass® multicoupling designs can be satisfactorily implemented using ¼ wave cavities, but close channelspacings, or a requirement to keep per-channel insertion losses to a minimum, may determine that the ¾ wavemodels are the most suitable in a particular application. For assistance in choosing the more appropriate solutionfor your requirements, please contact your nearest RFI sales office.

TP4053 Tx/Rx/Simplex model

TP4053 Transmit only model



Transmit only Receive/Transmit/Simplex

TP4053-2632-11 TP4053-2630-11


Cavity Type and Diameter ¾ wave, 6.625” (168mm)



Minimum Channel Separation @ Cavity Loss 215 KHz @ -2.5 dB 115 KHz @ -3.5 dB 5MHz










www.rfi.com.au36

740 - 870 MHz



These T-Pass® expandable transmitter multicouplers are ideallysuited to both analogue and digital applications in this emergingfrequency band. These channels utilise a single cavity and dualisolator and are for use on sites configured with separate transmit andreceive antennas.

• Superior low-loss combining for analogue and digitalsystems

• High power version available

• Ideal for P25 systems

• Predictable performance






Transmit onlyTP7487-1632-11





Minimum Tx-Tx Separation @ Cavity Loss 450 KHz @ -1.25 dB250 KHz @ -1.8dB










Weight (Typical per-channel) 5Kg (11lbs)


www.rfi.com.au37

740 - 870 MHz



Atte

nuat

ion

(dB

)

-55

-50

-45

-40

-35

-30

-25

-20

-15

-10

-5

0

100

IL = -1.25dB IL = -1.80dB

TP7487 Series model

Tx-to-TxSeparation

Cavity Loss(dB)


2 3 4 5 8 10 12

1 MHz

-1.25

-2.1 -2.3 -2.4 -2.5 -2.8 -3.0 -3.3

500 KHz -2.3 -2.8 -3.0 -3.2 -3.6 -3.9 -4.1

450 KHz -2.4 -2.9 -3.2 -3.4 -3.9 -4.1 -4.3

250 KHz -1.80 -3.1 -3.8 -4.1 -4.4 -4.9 -5.2 -5.5

New Frequency BandsT-Pass® multicoupler technology is ideally suited to new and emerging frequency bands. The design flexibility,broad bandwidth expandability, and overall implementation efficiency of T-Pass® ensures the maximum levels offuture-proofing are available to site owners and network operators.

T-Pass® Tx Noise Suppression vs. Cavity LossThe curves shown below for Tx noise suppression represent the selectivity of typical quarterwave, 168mm (6.625inch) T-Pass® cavity filters. Because T-Pass® cavities exhibit high loaded Q factors, excellent noise suppressionand channel-to-channel isolation are achieved with 168mm (6.625 inch) cavities at a minimum separation of250KHz. Additional cavities can be cascaded onto any channel in a T-Pass® system to customise an individualchannel’s response if required.







www.rfi.com.au

740-870 MHz


38

T-Pass® expandable transmit/receive multicouplers are ideally suitedto both analogue and digital voice and data applications. Thesechannels utilise dual cavities to provide the transmitter carrier andnoise suppression required for use on single (shared) transmit andreceive antennas. Transmit channels may be ordered complete withdual isolators.


• Broad bandwidth

• Suited for use with broadband antennas

• Excellent Performance








TP7487-2612-11 TP7487-2610-11













Weight (Typical per-channel) 6.1Kg (13.5lbs) 4Kg (8.8lbs)



www.rfi.com.au

800-1000 MHz


39


These T-Pass® expandable transmitter multicouplers are ideallysuited to analogue and digital PMR and trunking applications. Thesechannels utilise a single cavity and dual isolator and are for use onsites configured with separate transmit and receive antennas

• Superior low-loss combining for PMR, Trunking,Paging and Wireless Data systems

• High power version available


• Predictable performance






Transmit onlyTP8010-1632-11





Minimum Tx-Tx Separation @ Cavity Loss 450 KHz @ -1.25 dB250 KHz @ -1.8dB










Weight (Typical per-channel) 4.6Kg (10.1lbs)


www.rfi.com.au

800-1000 MHz


40


Atte

nuat

ion

(dB

)

-55

-50

-45

-40

-35

-30

-25

-20

-15

-10

-5

0

100

IL = -1.25dB IL = -1.80dB

TP8010 Series model

Tx-to-TxSeparation

Cavity Loss(dB)


2 3 4 5 8 10 12

1 MHz

-1.25

-2.1 -2.3 -2.4 -2.5 -2.8 -3.0 -3.3

500 KHz -2.3 -2.8 -3.0 -3.2 -3.6 -3.9 -4.1

450 KHz -2.4 -2.9 -3.2 -3.4 -3.9 -4.1 -4.3

250 KHz -1.80 -3.1 -3.8 -4.1 -4.4 -4.9 -5.2 -5.5

ApplicationsThe broad frequency expansion capability of T-Pass® technology ideally suits the often challenging requirementsof multicoupling in analogue and digital military applications. The compatibility of T-Pass® with both analogueand digital protocols and the ability to cater to narrow and wide channel bandwidths within the one multicouplerprovide the system designer with a unique solutions capability.

T-Pass® Tx Noise Suppression vs. Cavity LossThe curves shown below for Tx noise suppression represent the selectivity of typical quarterwave, 168mm (6.625inch) T-Pass® cavity filters. Because T-Pass® cavities exhibit high loaded Q factors, excellent noise suppressionand channel-to-channel isolation are achieved with 168mm (6.625 inch) cavities at a minimum separation of250KHz. Additional cavities can be cascaded onto any channel in a T-Pass® system to customise an individualchannel’s response if required.







www.rfi.com.au

800-1000 MHz


41

T-Pass® expandable transmit/receive multicouplers are ideally suitedto analogue and digital PMR, Trunking, voice and data applications.These channels utilise dual cavities to provide the transmitter carrierand noise suppression required for use on single (shared) transmit andreceive antennas. Transmit channels may be ordered complete withdual isolators.

• Superior low-loss combining solution

• Broad bandwidth










TP8010-2612-11 TP8010-2610-11

Frequency Range 800-1000MHz












Weight (Typical per-channel) 7.1Kg (15.5lbs) 5Kg (11lbs)



www.rfi.com.au

Accessories


42

Thru-line CablesT-Pass® thru-line cables are manufactured to frequency dependent lengths to optimise the performance ofchannels within a T-Pass® multicoupler. T-Pass® multicoupler cables are manufactured using high-qualitydouble shielded and silver-plated cable and non ferro-magnetic plated connectors to provide superiorintermodulation performance at high system power levels. When ordering, the frequency of themulticoupler channels either side of the requested cable or the RFI Site Reference number and channelnumber must be specified.

Isolator CablesA standard 600mm (24inch) cable to interconnect a T-Pass® multicoupler transmit channel cavity filter to itsassociated isolator. Other lengths available upon request.

Model No. Description Weight (typ.)

HW0000-1000-11 RG214 N male - N male cable 150g / 0.33lbs

T-Pass® BypassThe T-Pass® Bypass assembly allows a T-Pass®channel to be temporarily or permanently removedfrom a combiner stack without affecting theperformance of the remaining channels.

Note: When a T-Pass® channel is to be removed permanently from a combiner, it is recommended to purchase a replacement T-Pass® thru-line cable to re-configure the combiner for the adjusted number of channels, thereby permanently bypassing the removed channel.

Model No. Frequency Dimensions (mm/ in) Weight (typ.) (kg/lbs)

TP0608-2000-11 66-88MHz

50 x 50 x125 / 2 x 2 x 5

0.25 / 0.55

TP0810-2000-11 88-108MHz

TP1013-2000-11 108-136MHz

TP1317-2000-11 132-174MHz

50 x 50 x110 / 2 x 2 x 4.3

TP1625-2000-11 168-250MHz

TP3040-2000-11 300-400MHz

TP3855-2000-11 380-550MHz

TP7487-2000-11 740-870MHz

TP8010-2000-11 800-1000MHz

Model No. Description Weight (typ.)

HW0000-1001-11 RG214 N male - N male cable 150g / 0.33lbs

T-Pass® Bypass

www.rfi.com.au

Accessories


43

Tuning DetectorThe T-Pass® Tuning Detector provides a simple meansto tune T-Pass® transmitter multicoupler channels. It isdesigned to be connected to the RF Sampler port onSymmetry isolators. Alternatively it can be connectedthrough a -20dB or -30dB directional coupler to older T-Pass® channels utilising non-Symmetry isolators.A standard workshop analogue or digital multimetermay be connected to the Tuning Detector to provide theoutput reading.T-Pass® channels can be quickly tuned by simplyadjusting the cavity filter for a minimum meter readingunder transmitter power.

The T-Pass® Tuning Detector is suitable for use with T-Pass® multicouplers in all frequency bands.

Model No. Dimensions Weight

HW0000-2001-11 25x25mm / 1in x 1in 80g / 0.18lbs

T-Pass® Tuning Detector



44

In addition to our standard T-Pass® technology offerings, RFI cancustomise configurations through the addition of other products in ourdiverse multicoupling product range.

C1

1.0

C3

1.0

C5

1.0

TX3153.410 MHz

TX2153.545 MHz

TX1153.725 MHz

Pass 158.175 - 158.300

C2

1.50

C4

1.50

C6

1.50

C8 C9

SC

C7

RX1 158.175

RX2 158.220

RX3 158.275

50 Ohms

6 dBPad

PS

TX4493.5000

C5

1.0

C3

1.0

TX3493.5250

TX2467.5000

HF

HF

C1

1.0

TX1467.5000

C2

1.0

C4

1.0

SC

If the frequencies required in the multi-frequency application are spaced too farapart to use the above multi-cavitymethod, several such "windows" can beparalleled using T-Pass® technology onboth the input and output sides of thechannels. In this way, individualchannels can be spaced anywherewithin the antenna system's operatingbandwidth. This approach is also idealfor simplex systems - or to build areceiver preselector that must selectfrequencies from within a broadfrequency range that is wider thanavailable from other preselectorconfigurations.

C2

1.0

C4

1.0

C3

1.0

TR 1Ch. 1: 155.310Ch. 2: 155.910

C1

1.0

SC SC

Pass 155.310 MHz

Pass 155.910 MHz

Customising Systems

In addition, hybrid combiners can befront-ended to a T-Pass® transmitchannel to combine two or more veryclosely spaced transmit frequenciesonto a T-Pass® stack.

Another cavity can be cascaded witha T-Pass® channel to increasethe channel's pass bandwidth. Thisapproach can be utilised to createmulti-frequency "windows" when thefrequencies are closely spaced and isideal for applications such as multi-frequency paging transmitters.

T-Pass® channels can also beconfigured as receiver preselectors.Additional cavities can be cascadedwith such channels to create broaderwindows capable of passing thepassband of multiple receivefrequencies.This type of configurationis ideal for single-antenna systems.

C2

1.50

C1

1.0

SC

TX1Ch. 1: 148.6125Ch. 2: 148.7625

45

TX5856.5625-2.9 dB

TX4857.5625-3.2 dB

TX3858.5625-3.3 dB

C5

1.25

C4

1.25

C3

1.25

RX1 815.5625

FixedPad

PS

SC

C2

1.25

C1

1.25

TX2859.5625-3.2 dB

TX1860.5625-3.2 dB

RX2 814.5625

RX3 813.5625

RX4 812.5625

RX5 811.5625

50 Ohms

50 Ohms

50 Ohms

SystemAntenna

4-SectionTX Combline Filter

851-866 MHz

6-SectionRX Combline Filter

806-821 MHz

SYSTEM SPECIFICATIONS

Maximum Tx Power 12 WMaximum Tx Channel Loss -3.3 dBTx-Tx Isolation -80 dBAntenna - Tx Isolation -70 dBT-R Isolation @ Tx Frequencies -80 dBT-R Isolation @ Rx Frequencies -90 dBTypical System Sensitivity 0.24 uV(antenna feedline loss ~ 2 dB, 0.25 uV Rx sensitivity,net system gain set to +6.0 dB)

Customising Systems

T-Pass® technology can be also beutilised in systems utilising separatetransmit and receive antennas.Excellent system flexibility coupled withbroad operating frequency range can beeasily achieved from such systems.These systems offer the same inherentchannel and frequency expandability ofT-Pass®!The T-Pass® stack bandwidth is oftenonly limited by the operating bandwidthof the antenna system. In radiatingcable systems the operating bandwidthcan be as broad as 50-1000MHz!RFI can design and manufacture a customised T-Pass® multicoupler to suit yoursystem's individual operation requirements - from single channel simplex PMR, tomulti-channel trunking systems.For further information on the dynamic flexibility of T-Pass® technology pleasecontact your nearest RFI office for further assistance with all your transmittermulticoupling requirements.

RX3411.500 -1.6 dB

C6

1.5

C5

1.5

C4

1.5

SC

RX2460.800-2.1 dB

RX1520.875-1.6 dB

0.3

RXANTENNA

P 460.800R 455.800

TX3399.975-2.4 dB

C3

1.5

C2

1.5

C1

1.5

SC

TX2455.800-2.8 dB

TX1520.875-2.4 dB

0.3

RXANTENNA

P 455.800R 460.800



www.rfi.com.au46

66 - 1000 MHz

Expandable Hybrid Multicouplers

Hybrid Coupler based expandable transmitter multicouplers are ideallysuited to analogue and digital applications requiring frequency agility,narrow channel separation or small size. The models shown include aSymmetry® 150W single isolator on each input port.RFI use progressive hybrid combining techniques to ensure the lowestper-channel insertion losses are provided in the following models.Models with alternate channel capacities and input power rating arealso available upon request.

• Frequency agile

• Suits narrow channel separations

• Compact size

• Suitable for narrow/wide channel bandwidths


• Self contained enclosure

• Rugged, high quality designRear view - TX3855-4051-31

Front view - TX0608-2051-31


TX0608-2051-31 TX0608-3051-31 TX0608-4051-31


No. of Channels 2 3 4

Total Insertion Loss per Channel (typ.) 3.5 5.3 6.5

Continuous Input Power (per channel) 50 W (other ratings available)

Minimum Tx-Tx Separation None

Typical Tx-Tx Isolation >50 dB

Typical Antenna - Tx Isolation >50 dB


Typical Max. Input Return Loss (VSWR) -20 dB (1.22:1)


Connectors, Input & Antenna N female

Mechanical Mounting 483mm (19 in) rack mount vented enclosure

Dimensions 133x483x400mm / 5.25x19x15.75in


Note: High channel capacity and higher power models available upon request.

www.rfi.com.au47

66-1000 MHz



TX1317-2051-31 TX1317-3051-31 TX1317-4051-31















TX1013-2051-31 TX1013-3051-31 TX1013-4051-31















TX2030-2051-31 TX2030-3051-31 TX2030-4051-31

















www.rfi.com.au

66-1000 MHz


48


Transmit only

TX3855-2051-31 TX3855-3051-31 TX3855-4051-31















Transmit only

TX3040-2051-31 TX3040-3051-31 TX3040-4051-31














www.rfi.com.au

66-1000 MHz


49


Transmit only

TX8010-2051-31 TX8010-3051-31 TX8010-4051-31















Transmit only

TX6080-2051-31 TX6080-3051-31 TX6080-4051-31














50

The Receiver Multicoupler comprises a preselector and amplifier/distribution unit and is a critical component of any wirelesscommunications system. Excellent design and performance in receivermulticoupling ensures that a system’s overall performance is assured.

It is important to correctly design receiver multicoupling to suit eachparticular application using equipment that provides low noiseperformance, adjustable gain and expandability whilst maintaining stableoperation across a wide range of temperature and other environmentalparameters. The use of a high performance, low-noise preamplifier with agood third order intercept point (3OIP) figure ensures the highest quality ofreceived signal processing whilst ensuring maximum protection fromdesensitisation and intermodulation.

Increasingly, more portables than mobiles are used in communicationssystems. As a result, the potential for an imbalance in network designplaces extra emphasis on the need to design receiver multicouplingcorrectly to restore this balance.

RFI offers a range of receiver multicoupling preselectors, signalpreamplifiers and output distribution units for most frequencies from below30MHz to above 2GHz.

A sampling of our standard product is shown in this catalogue, but if yourequire a receiver multicoupler solution not shown in this catalogue, pleasedo not hesitate to contact your local RFI sales office for further assistance.

ReceiverMulticouplers

51

RFI offer several families of Receiver Preselectors that suit the differentapplications encountered in the design of communications systems.

ReceiverPreselectors

Small Cavity Preselectors - SmallSize, Low CostThese compact preselectors arerecommended for applications in whichsufficient transmit-to-receive antennaisolation exists to satisfy carriersuppression requirements with amoderate amount of preselectorselectivity.

100mm (4") Cavity Preselectors- High Performance, ModerateSize, Medium PowerThese preselectors utilise time-proven100mm (4") cavities to provide highselectivity and factory adjustable passbandwidths in a compact package.They can also be used as post-combiner filters at total input powers ofup to 250 watts (dependent onbandwidth settings). Their excellentcost-to-performance ratio makes themthe ideal choice for most preselectorapplications.

168mm (6.625") Cavity Preselector- High Performance, High PowerThese preselectors utilise 168mm(6.625") cavities to provide the highestselectivity in receiving applicationswhere low insertion loss and high out-of-band interference rejection andcarrier attenuation are required.Because of their low insertion loss andpower rating of up to 400 watts, thesepreselectors are also ideal as post-combiner filters to reducebroadband noise in multichanneltransmitter systems.

Combline Preselectors- High Performance, ExcellentSelectivityWe offer both maximally-flat and high-selectivity combline and combline notchpreselector styles to suit a range ofcritical design applications requiringh ighe r performance responsecharacteristics to the above modelconfigurations.

www.rfi.com.au52

66-88 MHz

Receiver Preselectors

Model No. Frequency (MHz) Pass Bandwidth Insertion Loss @Fo (dB)

Passband InsertionLoss (dB)

Power Rating(watts) Imped.

RX0608-1711-11 66-88 1.0 to 3.0 MHz 1.2 (Typ) 1.9 (Typ) Rx only 50 Ohms

Model No. Construction Size - H x W x D (mm / inches) Temperature° C / ° F

Weight(Kg / Ib) Connectors

RX0608-1711-11Alodined aluminium

with silver platedtuning elements

64 / 2.5 127 / 5 76 / 3 -30 to +60-22 to +140 1.4 / 3 BNC & N females

This model is a lumped constant, 4-section filter that can be factory setto bandwidths of 1.0 to 3.0MHz within the 66-88MHz frequency range.Ideally suited to low-density communications sites, or where antennaisolation can assist in overall transmit-receive isolations.Integral mounting brackets and its small size make it ideal for directinstallation on receiver multicoupling shelves or racking.

• Factory tunable bandwidth

• Ideal for low-density sites




• Response may be enhanced with additional filtering

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Typical Response Curve - RX0608-1711-11@ 1.0 and 3.0MHz BW

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RX0608-1711-11

Electrical

Mechanical

www.rfi.com.au53

66-88 MHz


These Receiver Preselectors offer excellent performance in a compactphysical package. These models are 4 section helical filters that canbe tuned to bandwidths of up to 2.5MHz.They are ideally suited to in-plant systems and low to medium densitycommunication sites.Integral mounting brackets and its small size make them ideal for directinstallation on equipment shelves, racking or in mobile applications

• Tunable bandwidth

• Ideal for in-plant systems

• Compact size


• Rugged construction




RX0707-1141-18 70-781.0 to 2.5 MHz 2.0 (Typ) 2.0 (Typ) Rx Only 50 Ohms

RX0708-1141-18 78-86



RX0707-1141-18RX0708-1141-18

Paintedaluminium 32 / 1.25 103 / 4 155 / 6.1 -20 to +60

-4 to +140 0.4 / 0.9 BNC female

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Typical Response Curve - RX0707-1141-18@ 2.0MHz BW

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www.rfi.com.au54

66-88 MHz


A four-cavity preselector that uses tried and proven 168mm (6.625")cavities. It can be factory tuned to bandwidths of up to 0.5MHz withinthe 66-88MHz frequency range.Suitable as a post-combiner filter catering for total input powers up to400watts, depending on pass bandwidth settings.Mounting is via a rail style bracket suited to 19inch racks. Alternatemounting styles are available to order.

• High selectivity


• Also suited as post-combiner filter


• Centre and front rail, wall mount and other mountingstyles available

RX0608-1641-41




RX0608-1641-41 66-88 0.1 to 0.5 MHz 1.0 (Typ) 1.5 (Typ) 400 (Note 1) 50 Ohms



RX0608-1641-41

Alodinedaluminium with

silver platedtuning elements

1675 / 66 483 / 19 +190 / +7.5-190/ -7.5

-30 to +60-22 to +140 54.5/120 N female

Note 1. Power rating varies with pass bandwidth. Please consult RFI if further clarification required.

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Typical Response Curve - RX0608-1641-41@ 0.1, 0.2, 0.5MHz BW

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www.rfi.com.au55

132-174 MHz





RX1315-1231-51 132-1501.2 MHz 1.7 (Typ) 2.3 (Typ) Rx and

Low Power Tx 50 OhmsRX1417-1231-51 144-174



RX1315-1231-51 Alodinedaluminium with


108 / 4.25 483 / 19 127 / 5 -30 to +60-22 to +140 2.7 / 5.9 BNC female

RX1417-1231-51

Note: 1. Power rating varies with pass bandwidth. Please consult RFI if further clarification required.

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RX1417-1231-51

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These receiver preselectors use three 50mm (2”) helical resonatorsthat may be tuned to a pass bandwidth of 1.2MHz.The small size of these units make them ideal for in-plant, bi-directional amplifier, and other similar systems applications.These units are mounted on a 483mm (19inch) front panel for easymounting and their small size also makes them suited to directinstallation onto receiver multicoupling shelves or racking.

• Ideal for low and medium density sites

• Compact package

• Rugged, reliable construction

www.rfi.com.au56

132-174 MHz


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These models are 4-section preselectors, using 50mm (2") helicalresonators that may be tuned to a bandwidth of approximately 1.2MHzwithin the 132-150MHz or 148-174MHz frequency ranges.They offer greater selectivity than 3-section models, with minimaladditional insertion loss.The symmetrical response and small size of these units also makethem ideal for integration into bi-directional amplifiers and othersystems applications.The units are mounted on a 483mm (19inch) front panel for easymounting and their small size also make them suitable for directinstallation on receiver multicoupling shelves or racking.


• Symmetrical response

• Compact package





RX1315-1241-51 132-1501.2 MHz 2.0 (Typ) 2.5 (Typ) Rx only

Low Power Tx 50 OhmsRX1417-1241-51 144-174





108 / 4.25 483 / 19 127 / 5 -30 to +60-22 to +140 3.0 / 6.6 BNC female

RX1417-1241-51


Electrical

Mechanical

www.rfi.com.au57

130-230 MHz


These receiver preselectors offer excellent performance in acompact physical package. These models are 4 section helicalfilters that can be tuned to bandwidths of up to 2.5MHz.They are ideally suited to in-plant systems and low to mediumdensity communication sites. Integral mounting brackets and theirsmall size make them ideal for direct installation on equipmentshelves or racking.These unit’s small size makes them suitable for direct installationonto receiver multicoupling shelves or racking.



• Compact size


• Rugged construction




RX1314-1141-18 130-140

2.5 MHz(Typ) 2.0 (Typ) 2.0 (Typ) Rx Only 50 Ohms

RX1415-1141-18 144-154

RX1516-1141-18 152-162

RX1617-1141-18 160-170

RX1718-1141-18 170-180

RX1820-1141-18 180-200

RX2023-1141-18 200-230

Model No. Construction Size - H x W x D (mm / inches) typ. Temperature° C / ° F


ALL MODELS Paintedaluminium 32 / 1.25 103 / 4 155 / 6.1 -20 to +60

-4 to +140 0.4 / 0.9 BNC female

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www.rfi.com.au58

132-174 MHz


RX1418-1441-31




RX1315-1441-31 132-150

0.5 to 2.0 MHz 1.4 (Typ) 1.8 (Typ) 125-250Note 1. 50 Ohms

RX1418-1441-31 144-174


Electrical

These preselectors utilise time-proven 100mm (4") re-entrantcavities in a design of superior flexibility that provides both highselectivity and factory adjustable bandwidth in a compact package. They can also be used as a post-combiner filter at total inputpowers up to 125-250 Watts depending on pass bandwidthsettings. Two or more of these units may be used to provide amulti-window receive preselector, or a wide passband, high power,duplexer. This model is supplied (standard) mounted on a 3RU panel, flush-mount shelf, other mounting styles are available to suit 483mm(19") racking.


• Adjustable pass bandwidth

• Suits analogue or digital systems


• Suited to use in high power, wide bandwidthduplexers

• Response may be further enhanced withadditional filtering

• Various mounting styles available



RX1315-1441-31Alodined

aluminium withsilver plated

tuning elementswith powder

coated front panel

133 / 5.25 483 / 19 546 / 21.5 -30 to +60-22 to +140 8.6 / 19 N female

RX1418-1441-31

Mechanical

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Typical Response Curve - RX1418-1441-31@ 0.5, 1.0 and 2.0MHz BW

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www.rfi.com.au59

132-250 MHz





RX1317-1641-41 132-1740.5 to 2.0 MHz 0.7 (Typ) 1.0 (Typ) 400

Note 1. 50 OhmsRX1625-1641-41 168-250





838 / 33483 / 19 +190 / 7.5

-190 / 7.5-30 to +60

-22 to +140 22 / 50 N female

RX1625-1641-41 762 / 30


These preselectors utilise time-proven 168mm (6.625") cavities in adesign of superior flexibility that provides both high selectivity andfactory-adjustable bandwidth in a compact package. They can also be used as a post-combiner filter at total input powersup to 400 watts depending on pass bandwidth settings. Two or moreof these units may be used to provide a multi-window receivepreselector, or a wide passband, high power, duplexer. This model is supplied (standard) mounted on a centre mount rail anda front mount rail suited to 483mm (19") rack.

• High selectivity



• Suits analogue or digital systems


• Suitable for use in high power, wide bandwidthduplexers

• Response may be further enhanced with additionalfiltering

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RX1317-1641-41

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Typical Response Curve - RX1317-1641-41@ 0.5, 1.0 and 2.0MHz BW

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www.rfi.com.au60

174-275 MHz





RX1720-1441-31 174-2000.5 to 3.0 MHz <2.0 (Typ) 1.3 (Typ) 125-250

Note 1. 50 OhmsRX2127-1441-31 215-275



RX1720-1441-31RX2127-1441-31

Alodined aluminiumwith silver platedtuning elements

with powder coatedflush front panel

134 / 5.25 483 / 19 305 / 12 -30 to +60-22 to +140 22 / 50 N female


These preselectors utilise time-proven 100mm (4") bandpass cavitiesin a design of superior flexibility that provides both high selectivity andfactory-adjustable bandwidth in a compact package. They can also be used as a post-combiner filter at total input powersup to 125-250 Watts depending on pass bandwidth settings. Two ormore of these units may be used to provide a multi-window receivepreselector, or a wide passband, high power, duplexer. Various mounting styles are available upon request.



• Ideal as post-combiner filter at up to 250 watts inputpower




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RX2127-1441-31

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Typical Response Curve - RX2127-1441-31@ 0.5, 1.0 & 2.0MHz

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www.rfi.com.au61

215-300 MHz





RX2130-1231-51 215-300 0.6 to 2.0 MHz 2.5 (Typ) 3.2 (Typ) Rx OnlyLower Power Tx 50 Ohms



RX2130-1231-51



50 / 2 483 / 19 210 / 8.25 -30 to +60-22 to +140 2.8 / 6 BNC female


This model is a 3-section preselector using 50mm (2") helicalresonators offering a pass bandwidth of 0.6 to 2.0MHz within the 215-300MHz frequency range.The symmetrical response and small size of this unit also make it idealfor integration into bi-directional amplifiers and other systemsapplications.This model is supplied mounted on a 483mm (19inch) front panel foreasy mounting and it’s small size also makes it suitable for directinstallation on receiver multicoupling shelves or racking.


• Tunable pass bandwidth


• Suited to bi-directional amplifiers and other similarsystems applications

• Response may be further enhanced with additionalfiltering -90

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Typical Response Curve - RX2130-1231-51-10 fo +10

RX2130-1231-51

www.rfi.com.au62

300-400 MHz





RX3040-1441-31 300-400 0.5 to 3.0 MHz <2.0 (Typ) 1.3 (Typ) 125-250Note 1. 50 Ohms



RX3040-1441-31


with powder coatedflush front panel

134 / 5.25 483 / 19 305 / 12 -30 to +60-22 to +140 22 / 50 N female

Notes: 1. Power rating varies with Pass bandwidth. Please consult RFI if further clarification required.

This preselector utilises time-proven 100mm (4") bandpass cavities ina design of superior flexibility that provides both high selectivity andfactory-adjustable bandwidth in a compact package. It can also be used as a post-combiner filter at total input powers up to125-250 Watts depending on pass bandwidth settings. Two or more ofthese units may be used to provide a multi-window receive preselector,or a wide passband high power duplexer. This model is available mounted on a 3RU panel, flush-mount shelf.Other mounting styles are available to suit 483mm (19") racking.

• Ideal for emerging Trunking and PMR bands

• Suits high density sites


• Ideal for analogue and digital systems


• Response may be further enhanced with additionalfiltering -90

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Typical Response Curve - RX3040-1441-31 @ 0.5, 1.0 & 2.0MHz

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RX3040-1441-31

www.rfi.com.au63

380-420 MHz


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RX3842-1801-31




RX3842-1801-31 380-420 5.0 MHz (typ) 1.5 1.5 Rx Only 50 Ohms



RX3842-1801-31

Alodined aluminium with silverplated tuning elements

Mounted on powder coatedflush front panel

89 / 3.5 483 / 19 204 / 8 -30 to +60-22 to +140 10 / 22 N female

Electrical

Mechanical

Typical Response Curve - RX3842-1801-31@ 5MHz

-25 fo +25

This preselector has been specifically designed to cater for theexacting requirements of new digital technologies such as P25.However it is equally suitable for analogue systems use. The unit is aprecision milled combline filter offering excellent performancecharacteristics.It offers exceptional passband roll off to provide excellent selectivityand transmitter band rejection. In addition, its construction providesother benefits such as broad pass bandwidth capability and lowinsertion loss. The pass bandwidth requirement in this frequencysegment is often 5MHz, but other widths can be provided if necessary.Alternate UHF frequency bands can also be provided upon request. The model is provided on a powder coated 2RU flush front panel, andother mounting styles are also available upon request.

• Developed for emerging P25 markets

• Also suited to analogue technologies

• Excellent selectivity


• Compact construction

www.rfi.com.au64

400-520 MHz


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RX4052-1231-51




RX4052-1231-51 400-520 0.6 to 1.0 MHz 2.5 (Typ) 3.2 (Typ) Rx OnlyLow Power Tx 50 Ohms



RX4052-1231-51



50 / 2 483 / 19 210 / 8.25 -30 to +60-22 to +140 2.8 / 6 BNC female

Electrical

Mechanical


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This preselector is a 3-section, helical resonator filter that has a passbandwidth from 0.6 to 1.0MHz within the 400-520MHz frequencyrange. Typical selectivity is greater than 45dB at frequencies 4MHzabove or below the passband edges.The symmetrical response and small size of these units also makes itideal for integration into bi-directional amplifiers and other systemsapplications.The unit is mounted on a 483mm (19inch) front panel for easymounting and its small size also makes the resonators themselvesideal for direct installation on receiver multicoupling shelves or racking.



• Suitable for compact systems

• Rugged reliable construction

www.rfi.com.au65

400-520 MHz




RX4052-1441-31Alodined aluminium with silverplated tuning elements, withpowder coated front panel

134 / 5.25 483 / 19 305 / 12 -30 to +60-22 to +140 6.3 / 14 N female

Mechanical




RX4052-1441-31 400-520 0.5 to 5.0 MHz(Typ) 1.5 (Typ) 1.8 (Typ) 125-250

Note 1. 50 Ohms


This preselector utilises time-proven 100mm (4") bandpass cavities ina design of superior flexibility that provides both high selectivity andfactory-adjustable bandwidth in a compact package. It can be also be used as a post-combiner filter at total input powersup to 125-250 Watts depending on pass bandwidth settings. Two ormore of these units may be used to provide a multi-window receivepreselector or a wide passband, high power, duplexer. This model is available mounted on a 3RU panel. Other mountingstyles are available to suit 483mm (19") racking.

• Ideal for analogue and digital, Trunking and PMR




• Ideal as post-combiner filter at up to 250 Watts inputpower



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RX4052-1441-31

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www.rfi.com.au66

400-530 MHz


These preselectors have been designed for applications such asmobile trunking and in-plant receiver multicoupling requiring up to4MHz wide passbands. The Vari-Notch® response of the units can betuned to provide the sharper response skirt on either the lower orupper side of the passband to optimise rejection of correspondingtransmitter channels or other signals.They offer high performance characteristics and suit applicationsrequiring high power operation and excellent VSWR across the entirepassband(s). As such they are also ideally suited as post-combinerfilters for transmitter multicouplers.Unlike some other compact preselectors, these models provide astable VSWR over a genuine 4MHz wide passband. This ensures thatconstant, stable isolation and insertion loss characteristics aremaintained across the entire band. The Vari-Notch® circuit by designalso offers a degree of out-of-band rejection that further enhances thescope of application for these units.These models each comprise four (4) cavity filters coupled together in a Vari-Notch® configuration and mounted on a 1RU 483mm (19inch)cantilever shelf. Alternatively, a mobile mount version and other customstyles are available.

• Ideal for mobile Trunking and in-plant Systems

• Ideal as a post-combiner filter at up to 100 wattsinput power

• Small, compact size

• Mobile-mount style available



RX4953-1541-31




RX4044-1541-31 400-440

0.1 to 5.0 MHz(Typ) 2.0 (Typ) 1.8 (Typ) 100 50 Ohms

RX4447-1541-31 440-470

RX4749-1541-31 470-490

RX4953-1541-31 490-530

Electrical

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All models



44 / 1.75 483 / 19 200 / 8.0 -20 to +80-22 to +176 1.2 / 2.64 BNC female

Mechanical

Typical Response Curve - RX4953-1541-31 @3.0MHz BW

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www.rfi.com.au67

380-700 MHz


RX4070-1243-11




RX4060-1231-11

400-600(Typ)

0.6 @ 400-430MHz

2.5 (Typ) 3.2 (Typ) RxLow Power Tx 50 Ohms

RX4060-1232-11 0.6 @ 450-470MHz

RX4060-1233-11 0.6 @ 470-490MHz

RX4060-1234-11 0.6 @ 490-510MHz

RX4060-1235-11 0.6 @ 510-530MHz

RX4070-1241-11 380-700

(Typ)

0.8 @ 450-470MHz

RX4070-1242-11 1.5 @ 470-490MHz

RX4070-1243-11 2.0 @ 400-420MHz

Electrical

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These preselectors are iris-coupled, 3 or 4-section filters. Theavailable bandwidth is dedendent upon configuration and ranges from380-700MHz frequency range (typical).Their small size makes them ideal as general-purpose preselectors orfor use in most low and medium density communications sites, in-plantsystems and in specialised applications such as bi-directional amplifiersystems.They are ideal for direct installation on receiver multicoupling shelvesor racking. Alternate mounting styles are available to order.

• Factory tunable bandwidth

• Ideal for low and medium-density sites

• Suited to in-plant designs



• Response may be enhanced with additional filtering



RX4060-1231-11RX4060-1221-11RX4060-1231-11RX4060-1241-11 RX4060-1251-11



51 / 2

147 / 5.7 172 / 6.8

-30 to +60-22 to +140

1.09 / 2.4

BNC female

196 / 7.7 178 / 7.0 1.28 / 2.8RX4070-1241-11RX4070-1242-11 RX4070-1243-11

Mechanical

Typical Response Curve - RX4070-1243-11 @3.0MHz BW

-10 fo +10

www.rfi.com.au68




RX8287-1181-18 820-870 1.0 to 10.0 MHzTypical 2.0 (Typ) 2.2 (Typ) Rx

Low Power Tx 50 Ohms



RX8287-1181-18 Paintedaluminium 32 / 1.25 210 / 8.25 90 / 3.5 -20 to +60

-4 to +140 0.64 / 1.4 BNC female

These receiver preselectors offer excellent performance in a compactphysical package. This model is a six section helical filter that can betuned to pass bandwidths of up to 10 MHz. This model is normally supplied separately for mounting into systemssuch as bi-directional amplifiers (BDAs) but a range of mounting stylesare available upon request.

• Ideal for Trunking and PMR on low density sites

• Suits BDA and other systems applications



• Suited to use in low power, wide bandwidthduplexers

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RX8287-1181-18

Electrical

Mechanical

800-1000 MHz


Typical Response Curve - RX8287-1181-18-20 fo +20

www.rfi.com.au69

800-1000 MHz





RX8010-1441-31 800-1000 0.2 to 8.0 MHz 1.0 (Typ) 1.3 (Typ) 125-250Note 1. 50 Ohms



RX8010-1441-31


silver platedtuning elements,

with powdercoated front panel

134 / 5.25 483 / 19 305 / 12 -30 to +60-22 to +140 6.3 / 14 N female


This preselector utilises time-proven 100mm (4") ¾ wavelengthbandpass cavities in a design of superior flexibility that provides bothhigh selectivity and factory-adjustable bandwidth in a compactpackage. It can also be used as a post-combiner filter at total input powers up to125-250 watts depending on pass bandwidth settings. Two or more ofthese units may be used to provide a multi-window receive preselectoror a wide passband, high power duplexer. This model is available mounted on a 3RU panel, flush-mount shelf, orin a cross-mount style - both suiting 483mm (19") racking.

• Ideal for analogue and digital, Trunking and PMR




• Ideal as post-combiner filter at up to 250 wattsinput power



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www.rfi.com.au70

800-1000 MHz


RX8082-1801-31

These preselectors are combline, maximally-flat bandpass filters thatprovide the low insertion loss and high selectivity required in RF-congested environments. They are ideally suited to use in receiver preselectors and bi-directional amplifier systems requiring high selectivity in a compactsize.Depending on the model, six to twelve-section models provide 5-15MHz of passband that can be tuned anywhere in their respectivefrequency ranges. These preselectors satisfy a wide variety of systemdesign applications in the 800MHz and 900MHz bands. They areparticularly suited to multi-channel systems including trunking radio,cellular, Bi-directional Amplifier applications and Distributed AntennaSystems (DAS).These models are recommended for typical system applications whereample transmit-receive frequency separation exists and/or whencarrier attenuation requirements can be satisfied with the combinedpreselector selectivity and/or antenna isolation.These models are mounted on flush rack mount panels, or they maybe mounted in alternative mounting styles if desired.

• Suits analogue and digital technologies

• Ideal for Trunking and Cellular applications


• Ideal for tower mount amplifiers

• Broad range available upon request

• Response may be further enhanced with additional

• Example models shown(other variants available on request)

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Typical Response Curve - RX8082-1801-31@ 18.0MHz

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www.rfi.com.au71

800-1000 MHz


Model No. Frequency(MHz) Pass Bandwidth Insertion Loss @ fo

(dB) Sections Power Rating(watts) Imped.

RX8082-1861-31

806-821

15 0.4 dB 6

Rx Only 50 Ohms

RX8082-1862-31 5 0.9 dB 6

RX8082-1881-31 15 0.6 dB 8

RX8082-1801-31 806-824 18 0.7 dB 10

RX8284-1861-31 825-845 10 0.6 dB 6

RX8586-1861-31851-866

15 0.4 dB 6

RX8586-1882-31 5 1.2 dB 6

RX8789-1861-31 870-890 10 0.6 dB 6

RX8991-1801-31 890-915 25 0.5 dB 10

RX8991-1802-31 890-915 25 0.5 dB 12

RX8990-1861-31896-901

5 1.0 dB 6

RX8990-1881-31 5 1.0 dB 8

RX9396-1801-31935-960

25 0.7 dB 10

RX9396-1802-31 25 0.7 dB 12

Model No. Construction Size - H x W x D(mm / inches)

Temperature° C / ° F


RX8082-1861-31

Alodined aluminium withsilver plated tuning

elements, with four alodinedfront panel

1345.25

48319

642.5 -30 to +60

-22 to 140

3.1 / 6.8

N female

RX8082-1862-31

RX8082-1881-31 3.6 / 7.9

RX8082-1801-31 3.8 / 8.4

RX8284-1861-31

3.1 / 6.8RX8586-1861-31

RX8586-1882-31

RX8789-1861-31 3.6 / 7.9

RX8991-1801-313.1 / 6.8

RX8991-1802-31

RX8990-1861-31 3.8 / 8.4

RX8990-1881-31 4.1 / 9.0

RX9396-1801-31 3.8 / 8.4

RX9396-1802-31 4.1 / 9.0

RX8586-1841-31 502

48319

1355.3 3.8 / 8.3

Electrical

Mechanical

72

Receiver DistributionSystems

Note: For an introduction to our receiver multicoupler technology, please refer tothe Technical Support section at the rear of this catalogue.

RFI offers a family of modular-style receiver multicouplers that utilise class "A", lownoise, bipolar transistor preamplifiers with excellent third order intercept (3OIP)and 1dB compression specifications in conjunction with multichannel distributiondividers to provide a dynamically expandable receiver multicoupler system foranalogue and digital systems.Applications for the modules in this family include the improvement of receivesensitivity, isolation measurement systems, increasing test equipment (i.e. spectrum analyser) sensitivity, and the distribution of signals to multiplereceivers or other equipment.Using our "pyramid" style interconnection system, receiver multicouplers can beprovided in output configurations from single (1) to sixty-four (64) distributedchannels in standard configurations, and customised designs can easilyaccommodate the requirements of high density sites requiring even morechannels.Preamplifiers and dividers may be added over time, as needed, to keep pace withthe receiver multicoupler capacity requirements on an individual site-by-site basis- therefore optimising expenditure on site equipment at all times. In addition, themodular format of our units allow them to be easily reconfigured at any future dateto adapt to changes in antenna and associated receiver preselector installationsat a site should these occur. This modular flexibility also allows any of thepreamplifier or divider modules to be re-used on other sites if a site isdecommissioned at any time.Preamplifier modules may be cascaded to provide higher levels of gain, orindividual units may be incorporated within complex distribution systems tobalance overall gain levels for particular channels.Single stage preamplifier configurations are typically suitable for up to eight (8) orsixteen (16) distributed channel outputs. A dual stage preamplifier typically hassufficient gain to drive up to sixty-four (64) such channels.In addition, passive attenuators are provided in all models to allow for the correctsettings of system gain within a given site configuration. When dual stagepreamplifiers are employed, the attenuator is connected between stages. In thisposition the second stage will operate at the highest output signal level only whenmaximum gain is required, obtaining the best IM performance possible over allgain adjustments.Construction uses specially designed aluminium extrusions. Preamp stages areindividually shielded to allow high gain packaging and tominimise extraneous coupling in areas of high levelRF fields. Each amplifier stage has an op-ampcontrolled bias level to ensure stable gainand noise figure performance across awide temperature range and supplyvoltage variation.

www.rfi.com.au73

Receiver Multicoupler Systems

Receiver Distribution Systems

These Receiver Multicoupler systems suit analogue and digitaltechnologies and are factory assembled on a 1RU 19inch rackmount shelf with a grey powder coated flush front panel. Theoverall gain of the system is adjustable, and initially set byattenuator pads that are supplied and fitted in the factory. These models are supplied with single or multiple stagepreamplifiers and distribution channel outputs as per thefollowing table. All models operate from an external regulated12-15Vdc power supply.

Higher maximum gain values can be provided. Further expansion beyond these listed capacities is possible through the addition of extra preamplifier modules and/or outputdistribution dividers and mounting shelves.Other frequency bands and mounting styles are also available on request.Please contact your nearest RFI office for further information.

Model No. Frequency (MHz) Outputs PreAmps Maximum Gain (dB)typ.

Noise Figure (dB)typ.

Current @ 15vdctyp.

RX0308-3104-31

30-88

4 1 12

2.5 110mARX0308-3108-31 8 1 9RX0308-3112-31 12 1 6RX0308-3116-31 16 1 6RX1036-3104-31

108-136

4 1 12

3.5 110mA

RX1036-3108-31 8 1 9RX1036-3112-31 12 1 6RX1036-3116-31 16 1 6RX1317-3104-31 4 1 12RX1317-3108-31 8 1 9RX1317-3112-31 12 1 6RX1317-3116-31 16 1 6RX1740-3104-31

174-400

4 1 10

3.5 110mARX1740-3108-31 8 1 7RX1740-3112-31 12 1 4RX1740-3116-31 16 1 4RX3855-3104-31

380-550

4 1 6

2.8

50mARX3855-3108-31 8 1 3RX3855-3208-31 8 2 14

100mARX3855-3212-31 12 2 10RX3855-3216-31 16 2 10RX8010-3104-31

800-1000

4 1 4

3.5

25mARX8010-3108-31 8 1 1RX8010-3208-31 8 2 13

50mARX8010-3212-31 12 2 9RX8010-3216-31 16 2 9

Electrical

MechanicalModel No. Construction Size - H x W x D (mm / inches) Temperature

° C / ° FWeight(Kg / Ib) Connectors

All abovemodels

Rack shelf withpowder coated front

panel44 / 1.75 482 / 19 350 / 13.8 -30 to +60°C

-22 to +140°FDependent onconfiguration BNC / N female

RX3855-3216-31

www.rfi.com.au74

Receiver Multicoupler Starter Systems

Model No. Frequency(MHz) No.of Stages PreAmp Gain

(typ.)Noise Figure

(typ.)3rd I.P.(typ.)

1dB Comp.(typ.)

Supply(typ.)

RX0020-3104-31 5-200 1 15 dB 3.5 dB +28 dBm +26 dBm +12-15vdc@70mA









All abovemodels

Rack shelf withpowder coated front

panel44 / 1.75 482 / 19 350 / 13.8 -30 to +60°C

-22 to +140°F 6.3 / 14 N female

Electrical

Mechanical


Typical 4-way receiver distribution system



www.rfi.com.au75

Expansion Kits


Receiver Multicoupler Expansion Kits (4 to 8 channel capacity)This kit may be ordered for use in all frequency bands. It expands the existing single stage StarterSystem from four (4) to eight (8) outputs, and provides an additional two-way and four-way outputdivider, interconnect cable, hardware and instructions for mounting onto the existing shelf. The totalpossible overall system gain of the initial Starter System is reduced by around 3dB by the insertion lossof the two-way divider.

Model No. Frequency (MHz) Expansion PreAmpsin Kit

Two-waysplitters in kit

Four-way splittersin kit Supply

RX0000-4008-11 5-1000 From 4-8 0 1 1 As per 4 channel above

Receiver Multicoupler - Expansion Kits (8 to 12 channel capacity)This kit may be ordered for use in all frequency bands. It expands the above eight (8) channel systemto twelve (12) channels and provides two additional four-way output dividers, interconnect cable, apreamplifier, a 50 Ohm termination for the unused port plus hardware and instructions for mountingonto the existing shelf. The total possible overall system gain of the above eight (8) channel system isincreased by the inclusion of the preamplifier module.



Four-waysplitters in kit

Supply(typ.)

RX0020-4112-11 5-200 From 8-12 1 0 2 +12-15vdc@ 70mA

RX0308-4112-11 30-88 From 8-12 1 0 2 +12-15vdc@ 110mA

RX1036-4112-11 108-136 From 8-12 1 0 2 +12-15vdc@ 110mA

RX1317-4112-11 132-174 From 8-12 1 0 2 +12-15vdc@ 110mA

RX1740-4112-11 174-400 From 8-12 1 0 2 +12-15vdc@ 110mA

RX3855-4112-11 380-550 From 8-12 1 0 2 +12-15vdc@ 50mA

RX8010-4112-11 800-1000 From 8-12 1 0 2 +12-15vdc@ 25mA

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Expansion Kits




Four-waysplitters in kit Supply

RX0000-4016-11 5-1000 From 12-16 0 0 1 As per 12 channel above

Further expansion beyond these listed capacities is possible through the addition of additional preamplifier modules and/oroutput distribution dividers and mounting shelves.Other frequency bands and mounting styles are also available on request.Please contact your nearest RFI office for further information.

Receiver Multicoupler Expansion Kits (12 to 16 channel capacity)This kit may be ordered for use in all frequency bands. It expands the twelve (12) channel system tosixteen (16) channels, and provides an additional four-way output divider, interconnect cable, hardwareand instructions for mounting onto the existing shelf. The total possible overall system gain of thisconfiguration is the same as the twelve (12) channel expanded system.



www.rfi.com.au77

Preamplifier Modules


RX3855-2001-11

These preamplifier modules are used in our receiver distributionsystems products.They offer exceptional performance and combine low-noise class “A”operation utilising a low distortion bi-polar design that provides a high3rd order intercept point (3OIP) and excellent 1dB compression pointratings.If required, these units may also be cascaded to provide amplifierblocks of up to 70dB gain or higher.

• Suitable for analogue and digital systems

• Very low noise

• Superior 3OIP and 1dB compression point

• Excellent stability

• May be cascaded for higher gain

• Suited for use in receiver multicoupling, BDA’s, etc.

Model No. Frequency (MHz) PreAmp Gain(typ.)

Noise Figure(typ.)

3rd I.P.(typ.)

1dB Comp.(typ.)

Supply(typ.)

RX0308-2001-11 30-88 15 dB 3.5 dB +28 dBm +26 dBm +12-15vdc@70mA








All above models Alodine aluminiumcasing 44 x 57 x 82 / 1.75 x 2.25 x 3.25 -40 to +60°C

-40 to +140°F 0.25 / 0.55TNC female (power)

BNC female(RF In / Out)

Electrical

Mechanical

www.rfi.com.au78

Port Terminations


Model No. Frequency Return Loss / VSWR Power Rating Impedance

SP0000-6001-11DC-1000 30 dB / 1.05:1 0.5 Watts (Rx Only) 50 Ohms

SP0000-6002-11

These 50 Ohm terminations are specifically designed to terminate unused ports on low power devices(such as receiver distribution systems) and help ensure optimum shielding and the lowest system noisefigures.They are supplied individually in BNC and N male configurations. For other termination devices,please refer to the Systems Products section of this catalogue.

Model No. Dimensions Temp Range Weight(g / oz) Finish Connectors

SP0000-6001-11 As per BNC male -30 to +60°C-22 to +140°C

9 / 0.4 As perconnector

BNC male

SP0000-6002-11 As per N male 29 / 1.2 N male

Electrical

Mechanical



79

Tower MountedSystems

RFI offers a family of modular-style Tower Mounted Preamplifier Systems toimprove your system's receive performance. Designed for today's challengingand often hostile RF environments, this family of products offers an excellentbalance between low noise, high gain, and intermodulation immunity.Superior performance and rugged dependability coupled with our design,assembly and testing quality make our tower mounted systems ideal for anyapplication - including cellular, wireless data, analogue and digital PMR, trunkingand conventional two-way radio.In addition to improving receiver system sensitivity, tower-mounted preamplifierscan also provide you the option of using higher-loss, more cost effective coaxialcabling that can also reduce structural loadings on towers.Whilst there are some "typical" system configurations based on commonly utilisedapplications and frequencies, we can also custom design and manufacturesystems to suit your needs using the same tried and proven module technologiesused in our other multicoupling systems, in frequencies from 30MHz to over2500MHz. A sampling of our standard product is shown in this catalogue but ifyou require a tower mounted preamplifier system not shown in this catalogue,please do not hesitate to contact your local RFI sales office for further assistance.Manual Backup SeriesThis series brings economy with uncompromised performance. The tower unit'senclosure is constructed from a weather proof thick-walled stainless steel cabinet. Tower UnitThe tower unit consists of three (3) internal subassemblies: a preselector filter,preamplifier/bypass circuitry, and a surge suppressor/DC bias tap. The mountingbar included with the system enclosure has stainless steel bracket platesfastening to round poles or tower legs. The preamplifier/bypass circuitry isoptimised to achieve the lowest possible noise figure without compromisingintermodulation specifications. Bypass circuitry allows continued operationwithout signal amplification in the event power is lost. Alternatively, if thepreamplifier fails, removing power from the coaxial cable forces the tower unit intoa bypass mode, preserving receive operation.The surge suppressor/DC bias tap includes a Polyphaser® gas-discharge devicethat suppresses destructive transients at the coaxial cable point of entry. Bulk-head mounting provides a low impedance ground connection for the Polyphaser®device.Ground UnitThe ground-level control panel consists of an AC power supply, an input forexternal 12-15VDC battery backup, surge suppressor, and DC bias injectionmodule.

www.rfi.com.au80

Tower Mounted Systems

Typical Tower Mount Unit

Gain Up to 10dB (typical)

Amplifier Noise Figure 1.1dB

System Noise Figure 2.0-3.0dB

Typical 3OIP +40dBm

DC Supply Voltage +15VDC

Nom. I/O Impedance 50 Ohms

I/O VSWR 1.5:1

Temperature Range -40 to +60º C / -22 to +140º F

Connectors N female

Overall Dimensions HxWxD 630x300x300mm (24.8x12x12")

Enclosure Type Stainless Steel

Weight 13.5kg / 29.7lbs

Com

bine

Pre

sele

ctor

SurgeSuppressor

& DC Bias Tap

Tower Feedline

SurgeSuppressor &DC Bias Inject

TowerPower Supply

DC BackupPower12-15 VDC

To ReceiverMulticoupler

AMP

Typical Ground Unit

AC Supply Voltage 120/240VAC 50/60Hz

DC Backup Voltage 12-15VDC

Max. Power Consumption 4 watts (typical)


Connectors N female

Panel Dimensions HxWxD 88x483x248mm (3.5x19x9.75") typical

Weight 2.7kg / 6lbs



www.rfi.com.au81

Main / Standby ModelsRFI supply units that utilise a switched backup system in which an isolated, off-line secondarypreamplifier is switched into service in case of primary preamplifier failure. These systems allow theoperator to manually activate the secondary preamplifier via a switch in the equipment room. Inaddition, these units can be supplied featuring Auto-Backup™ circuitry that automatically activates thesecondary preamplifier when primary operating current falls outside of preset limits.

Tower UnitThe tower unit is housed in a compact weatherproof stainless steel cabinet with appropriateconnectors, gaskets, and moisture relief fitting.

It contains the following major systems components:

• a preselector filter

• primary and secondary low-noise preamplifiers

• amplifier switching control circuitry

• DC bias tap and transient suppression circuitry

• optional RF Test port with 30dB sampler

The surge suppressor/DC bias tap includes a Polyphaser® gas-discharge device that suppressesdestructive transients at the coaxial cable point of entry.

Control PanelThe ground-level control panel consists of an AC power supply, an input for external 12-15VDC power,surge suppressor, DC bias injection module, and a preamplifier selector switch. It is connected to thetower-mounted unit via 50ohm, low-loss coaxial cable.


Tower Mount Unit

Gain Up to 10dB typicalAmplifier Noise Figure 2.5dB typicalSystem Noise Figure 5.0dB typical

Typical 3OIP +38dBm (min.)DC Supply Voltage +15VDC

Nom. I/O Impedance 50 OhmsI/O VSWR 2.0:1


Overall Dimensions HxWxD 630x300x300mm (24.8x12x12")Enclosure Type Stainless Steel

Weight 15.4kg / 34lbs

Control Panel

AC Supply Voltage 120/240VAC 50/60Hz

DC Backup Voltage 12-15VDC (24-37VDC on Auto-Backup models)

Max. Power Consumption 4 watts


Connectors N female

Panel Dimensions HxWxD 88x483x248mm (3.5x19x9.75")

Weight 2.7kg / 6lbs(6.4kg / 14.5lbs on Auto-Backup models)

www.rfi.com.au82


LOW-LOSSANTENNAFEEDLINE

SYSTEMRECEIVINGANTENNA

OPTIONAL RFTEST POINTCONTROL

SECONDARYAMPLIFIER(OFF LINE)

PRIMARYAMPLIFIER(IN LINE)

RFSWITCHING

MODULE

MANUAL BACKUPCONTROL MODULE

SURGESUPPRESSOR& DC BIAS TAP

COMBLINEPRESELECTOR

-30 dBTAP

+15 V

TransmissionLine

Test PortCable

LOW-LOSS TOWERTRANSMISSION LINE

RF TESTCABLE(RG-213 or RG-214)

RF TestOutput

RF TestInput

DC BackupPower12-15 VDC

120/240 VAC50/60 Hz

OPTIONAL RF TEST PANEL

RF TESTCONTROL

SURGE SUPPRESSOR& DC BIAS INJECT

CONTROL PANEL

TOWERPOWERSUPPLY

PREAMPSELECTOR

SWITCH

SURGESUPPRESSOR &DC BIAS INJECT

+15 V

RF+DC

RF

To receivermulticoupler

LOW-LOSSANTENNAFEEDLINE

SYSTEMRECEIVINGANTENNA

OPTIONAL RFTEST POINTCONTROL -30 dB

TAP

COMBLINEPRESELECTOR

SECONDARYAMPLIFIER(OFF LINE)

PRIMARYAMPLIFIER(IN LINE)RF

SWITCHINGMODULE

Auto-Backup (TM) CONTROL MODULE

+15 V

IN-LINESURGE

SUPPRESSOR

SURGESUPPRESSOR& DC BIAS TAP

Test PortCable

TransmissionLine

ControlCable

RF TESTCABLE(RG-213 or RG-214)

LOW-LOSS TOWERTRANSMISSION LINE

9-CONDUCTORCONTROL CABLE

RF TestOutput

RF TestInput

OPTIONAL RF TEST PANEL

RF TESTCONTROL

SURGE SUPPRESSOR& DC BIAS INJECT

+15 V

AlarmOutputs

DC BackupPower 24-37

VDC117/230 VAC

50/60 Hz

To receivermulticoupler

CONTROL PANEL

VOLTAGE/CURRENT ALARMS,DC BACKUP, PREAMP CONTROL

BACKUPREGULATOR

TOWERPOWERSUPPLY

SURGESUPPRESSOR &DC BIAS INJECT

IN-LINE SURGESUPPRESSOR

RF+DC

RF

Typical System Block Diagram - Manual back up Typical System Block Diagram - Auto back up

www.rfi.com.au83


Example ModelRFI supplies the SmartBackup™ tower top amplifier (TTA) technology. SmartBackup will switchautomatically to a backup preamplifier when warranted. The system will also go into "bypass" shouldthere be a catastrophic failure of both preamplifiers. The supplied preamplifiers utilise the latestamplifier technology available to minimise the system noise figure while providing unparalleled outputperformance.In this example model, a 806-824MHz preselector provides 100dB of isolation to transmitters at851MHz and if harsh site conditions demand it, additional preselector selectivity can be provided.Thispreselector is placed just before the one rack unit receiver multicoupler that doubles as a control deckfor the TTA.A digital display indicates the current drawn and the status of the preamplifiers respectively. Drycontact alarm closures are provided for remote system monitoring. Please contact RFI for details onmodels in other frequency bands or bandwidths.

TTA Specifications

Frequency Range 806-824 MHzTTA Noise Figure 3.0dB typical, 3.5 dB Max

Net Gain 24 dBTTA 3OIP >38 dBm

Bypass Insertion Loss 3.0 dB maxVSWR <1.7:1

Power Requirements +24 VDC @ 1000 mALightning Protection impulse suppressor on all TTA ports

Operating Temperature -40 to +60°C / -40 to +140° F

Enclosure NEMA 4X, Stainless SteelConnectors N female

Dimensions H x W x D(mm / inches) 610 x 152 x 152 / 24 x 6 x 6

Net Weight 13kgs / 30 lbs

Receiver Multicoupler/Control Panel Specifications


Noise Figure 4.0 dB max

Preamp 3OIP 44 dBm

Net Gain 3 dB min

VSWR 1.5:1 max

Number of Channels 16

Power Requirements 85-264 VAC, 47-63 Hz

Operating Temperature -30 to +60° C / -22 to +140° F

Mechanical Standard EIA19”Rack mount

Connectors N female in, BNC female out

Dimensions H x W x D(mm / inches) 44 x 482 x 355 / 1.75 x 19 x 14

Net Weight 5kgs / 12lbs

806-824 MHz SmartBackup Tower Top Amplifier System

RFI can supply a wide range of tower mount equipment configured to meet the requirements of mostsystems' installations.For information on a specific model to satisfy your system design requirements, please contact yournearest RFI office with further details of your tower mount preamplifier requirements.



84

Cavity Filters

Resonant cavity filters are the building blocks of duplexers and manyother multicoupler configurations. Individual cavities may be used for avariety of filtering and interference management applications.

In addition, units may be cascaded to obtain a sum result of theirindividual characteristics, greatly expanding the configurations that canbe designed and manufactured, and thereby catering for mostcustomised design performance requirements

RFI offers a range of quality cavity filters in Bandpass, Standard Notch,Series Notch®, Vari-Notch® and T-Pass® styles.

A sampling of our standard product is shown in this catalogue, but wecan supply product for most frequencies - from as low as 900KHz to over2200MHz. If you require a cavity filter solution not shown in thiscatalogue, please do not hesitate to contact your local RFI sales officefor further assistance.

85

• The 6mm (1/4") thick top cap that is heliarced at the high current points means theelimination of unwanted noise - and the need for periodic retuning caused by poor metal-to-metal contact when pop rivets are used.

• The 2.5mm (1/10") seamless aluminium pipe wall means that these cavities do notdent and detune as thin-walled copper types can. The non-corrosive passivatedcoating (alodine) is applied inside and outside the shell, unlike some others availableon the market.

• Erratic tuning problems, noise, high loss, degraded selectivity, and the extra repairlabour incurred by the corrosion of tuning probe contacts is avoided through the useof quality silver plating.

• Excessive tuning time is not incurred as most cavity sizes have both a coarse andfine tuning control as well as calibrated and easily adjustable loops.

• Most cavity types can be easily reconfigured to other response styles, allowing future re-use in alternate designs or installations.

• The bottom removable end cap means ease of access into the cavity shouldmaintenance ever be required.

The Quality

COARSE TUNING CONTROL

FINE TUNING CONTROL

¼” THICK END CAP, HELIARCEDAT HIGH CURRENT POINTINSTEAD OF POP RIVETTED

SILVER PLATED, HARDENED,COPPER CONTACT FINGERS,AND SILVER PLATED AT HIGHCURRENT AREA AT TOP NEAREND CAP

SILVER PLATED BRASSMOVABLE TUNING PROBES

1/10” SEAMLESS ALUMINIUMPIPE WALL PASSIVATED WITHALODINED FINISH

SEALED END CAP

CALIBRATED LOOPS

86

Resonant cavity filters are the building blocks of duplexers and many types ofmulticouplers. However their use is not limited to these applications. They can beused to improve the performance of existing duplexers, to provide noise reductionon noisy transmitters, to improve receiver front-end selectivity, or for preventingintermodulation, desense, or overload problems.For more information on the use of the different styles of cavity filters, please referto the Introduction to Cavity Filters in the Technical Support section of thiscatalogue.RFI offers an extensive range of cavity filter response types, cavity diameters, andwavelengths to suit all applications.In addition, our comprehensive product portfolio is supported with an extensiveresearch and development, manufacturing, testing and commissioning capability.All of this means that RFI is capable of providing a multicoupling solution to suitalmost any standard and customised requirements.

The Variety

0.2 db 0.2 db 0.2 db

38 db

25 db

8.5 db

14 db

40 db

25 db

13.5 db

20.0 db

42 db 43 db47 db

18.5 db

22.5 db

25 db

0.3 db1.6 db

I.L.SETTING

0.5 db1.0 db

I.L.SETTING

Typical response characteristics for filter styles

5dBdiv.+

VARI-NOTCH®

NOTCH

BANDPASS

87

The conversion assembly was developedwith non-obsolescence in mind.

Simply put, conversion assemblies are avariety of different but interchangeablecoupling loop assemblies that allow thebasic cavity resonator shell to operate in anumber of filter response modes - thusproviding an optimum filter responsecharacteristic (curve) for almost anyapplication.

With this convertibility, any of the 168mm(6.625") or 254mm (10") cavities can bemade to take on a Bandpass, Vari-Notch®,Series Notch®, or T-Pass® response.

Conversion assemblies are not onlyinterchangeable, they are alsocontinuously adjustable within their rangefor various frequency separations - withoutthe need for cumbersome tuning stubs.

This flexibility allows RFI to solve manycomplex and unusual filtering andmulticoupling challenges with relativeease. In addition, this offers cost savingsallowing conversion of cavities toalternate configurations, quickly andcheaply.

The Flexibility

T-Pass®

SERIES NOTCH®

VARI NOTCH®

BANDPASS



Please note: Typical examples of performance response curves are included inthe following cavity filters section of this catalogue.For specific curves not included in these pages please contact your nearest RFIsales office for assistance.

www.rfi.com.au88

30-50 MHz

Cavity Filters

• A range of response styles for different applications

• Various sizes/wavelengths to suit performancerequirements

• Temperature compensated


• Can be cascaded to provide enhanced responsecharacteristics

-90

-80

-70

-60

Ch2

-40

-30

-20

-10

Ch1

Abs

dB

Span 10.000 MHz

2

-90

-80

-70

-60

Ch2

-40

-30

-20

-10

Ch1

Abs

dB

Span 5.000 MHz

2

1

Typical Response Curve - CV0405-5611-11 @1MHz Tx-Rx Separation

Typical Response Curve - CV0405-0611-11 @1dB Insertion Loss

Frequency (MHz) Size(mm / inch) Bandpass

Series Notch® Vari-Notch®

Low-Pass /Symmetrical High-Pass / Narrow Low-Pass HighPass

30-40MHz 168 / 6.625 CV0304-0611-11 CV0304-2611-11 CV0304-1611-11 CV0304-5611-11 CV0304-4611-11

30-40MHz 254 / 10 CV0304-0111-11 CV0304-2111-11 CV0304-1111-11 CV0304-5111-11 CV0304-4111-11

38-50MHz 168 / 6.625 CV0405-0611-11 CV0405-2611-11 CV0405-1611-11 CV0405-5611-11 CV0405-4611-11

38-50MHz 254 / 10 CV0405-0111-11 CV0405-2111-11 CV0405-1111-11 CV0405-5111-11 CV0405-4111-11

Diameter(mm / inch) Insertion loss Wavelength Power Rating (watts) Impedance

168 / 6.625 and 254 / 10 0.5 - 3.0 ¼ 400 - varies with insertionloss setting 50 Ohms

www.rfi.com.au89

66-88 MHz

Cavity Filters

-90

-80

-70

-60

Ch2

-40

-30

-20

-10

Ch1

Abs

dB

Span 10.000 MHz

2

1

-90

-80

-70

-60

Ch2

-40

-30

-20

-10

Ch1

Abs

dB

Span 5.000 MHz

2

1






66-88MHz 168 / 6.625 CV0608-0611-11 CV0608-2611-11 CV0608-1611-11 CV0608-5611-11 CV0608-4611-11

66-88MHz 254 / 10 CV0608-0111-11 CV0608-2111-11 CV0608-1111-11 CV0608-5111-11 CV0608-4111-11






• May be cascaded to provide enhancedcharacteristics

• Peg rack and other mounting hardware available

www.rfi.com.au90

-90

-80

-70

-60

Ch2

-40

-30

-20

-10

Ch1

Abs

dB

Span 10.000 MHz

2

1

Typical Response Curve - CV0810-0611-11@1dB Insertion Loss




88-108MHz 168 / 6.625 CV0810-0611-11 CV0810-2611-11 CV0810-1611-11 CV0810-5611-11 CV0810-4611-11

88-108MHz 254 / 10 CV0810-0111-11 CV0810-2111-11 CV0810-1111-11 CV0810-5111-11 CV0810-4111-11



88-108 MHz

Cavity Filters

• Ideal for FM radio broadcast applications




• Can be cascaded to provide enhancedcharacteristics

RFI use the superior TX RX brandof multicoupling components. TXRX cavity filters offer a uniqueheliarced construction thatprovides excellent performanceand reliability - attributesessential in the FM RadioBroadcast environment.

www.rfi.com.au91

108-136 MHz

Cavity Filters

-90

-80

-70

-60

Ch2

-40

-30

-20

-10

Ch1

Abs

dB

Span 5.000 MHz

2

1

2

-90

-80

-70

-60

Ch2

-40

-30

-20

-10

Ch1

Abs

dB

Span 5.000 MHz

2

1

2

Typical Response Curve - CV1013-4611-11@1MHz Tx-Rx Separation





108-136MHz 168 / 6.625 CV1013-0611-11 CV1013-2611-11 CV1013-1611-11 CV1013-5611-11 CV1013-4611-11

108-136MHz 254 / 10 CV1013-0111-11 CV1013-2111-11 CV1013-1111-11 CV1013-5111-11 CV1013-4111-11



• Suits international and domestic aviation bands





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132-174 MHz

Cavity Filters

-90

-80

-70

-60

Ch2

-40

-30

-20

-10

Ch1

Abs

dB

Span 10.000 MHz

2

1

Typical Response Curve - CV1417-0411-11@1dB Insertion Loss

Frequency Size(mm / inch) BandpassSeries-Notch® Vari-Notch®

Low-Pass /Symmetrical High-Pass /Narrow Low-Pass High-Pass

132-150MHz 168 / 6.625 CV1315-0611-11 CV1315-2611-11 CV1315-1611-11 CV1315-5611-11 CV1315-4611-11

132-150MHz 254 / 10 CV1315-0111-11 CV1315-2111-11 CV1315-1111-11 CV1315-5111-11 CV1315-4111-11

132-150MHz 100 / 4 CV1315-0411-11 See next page

144-174MHz 168 / 6.625 CV1417-0611-11 CV1417-2611-11 CV1417-1611-11 CV1417-5611-11 CV1417-4611-11

144-174MHz 254 / 10 CV1417-0111-11 CV1417-2111-11 CV1417-1111-11 CV1417-5111-11 CV1417-4111-11

144-174MHz 100 / 4 CV1417-0411-11 See next page

Diameter(mm / inches) Insertion Loss (dB) Wavelength Power Rating(watts) Impedance

100 / 40.5 - 3.0 ¼

125 - varies with insertionloss setting

50 Ohms

168 / 6.625 and 254 / 10 400 - varies with insertionloss setting

• Suits VHF, PMR, Data, Trunking and Pagingapplications






RFI offer a range of cavity filters,isolators, duplexers, receiversmulticouplers and the TX RX T-Pass® multicoupling technology tocover this emerging frequencyband. Please contact your nearestRFI sales office for furtherinformation or assistance.

www.rfi.com.au93

132-174 MHz

Cavity Filters

-90

-80

-70

-60

Ch2

-40

-30

-20

-10

Ch1

Abs

dB

Span 5.000 MHz

2

1

2

2


Frequency Size(mm / inch) Min. Sep. (MHz) Insertion Loss Power(watts) Vari-Notch®

Low-Pass High-Pass

132-150MHz 100 / 4 0.5 0.6 - 0.7 125 CV1315-5411-11 CV1315-4411-11

132-150MHz 100 / 4 1.0 0.4 - 0.5 125 CV1315-5412-11 CV1315-4412-11

132-150MHz 100 / 4 3.0 0.2 400 CV1315-5413-11 CV1315-4413-11

132-150MHz 50x50 / 2x2 1.5 0.6 50 CV1315-5211-11 CV1315-4211-11

132-150MHz 50x50 / 2x2 2.0 0.45 75 CV1315-5212-11 CV1315-4212-11

132-150MHz 50x50 / 2x2 4.0 0.3 100 CV1315-5213-11 CV1315-4213-11

Series Notch®

132-150MHz 50x50 / 2x2 2.0 0.3 100 CV1315-2211-11 CV1315-1211-11

132-150MHz 50x50 / 2x2 4.0 0.15 100 CV1315-2212-11 CV1315-1212-11

132-150MHz 33x33 / 1.3x1.3 2.0 0.45 30 CV1315-2311-11 CV1315-1311-11

132-150MHz 33x33 / 1.3x1.3 4.0 0.2 60 CV1315-2312-11 CV1315-1312-11

Vari-Notch®

144-174MHz 100 / 4 0.5 0.6 - 0.7 125 CV1417-5411-11 CV1417-4411-11

144-174MHz 100 / 4 1.0 0.4 - 0.5 125 CV1417-5412-11 CV1417-4412-11

144-174MHz 100 / 4 3.0 0.2 400 CV1417-5413-11 CV1417-4413-11

144-174MHz 100 / 4 3.0 0.5 400 CV1417-5414-11 CV1417-4414-11

144-174MHz 50x50 / 2x2 1.5 0.6 50 CV1417-5211-11 CV1417-4211-11

144-174MHz 50x50 / 2x2 2.0 0.45 75 CV1417-5212-11 CV1417-4212-11

144-174MHz 50x50 / 2x2 4.0 0.3 100 CV1417-5213-11 CV1417-4213-11

Series Notch®

144-174MHz 50x50 / 2x2 2.0 0.3 100 CV1417-2211-11 CV1417-1211-11

144-174MHz 50x50 / 2x2 4.0 0.15 100 CV1417-2212-11 CV1417-1212-11

144-174MHz 33x33 / 1.3x1.3 2.0 0.45 30 CV1417-2311-11 CV1417-1311-11

144-174MHz 33x33 / 1.3x1.3 4.0 0.2 60 CV1417-2312-11 CV1417-1312-11

www.rfi.com.au94

168-250 MHz

Cavity Filters

-90

-80

-70

-60

Ch2

-40

-30

-20

-10

Ch1

Abs

dB

Span 10.000 MHz

2

1



Low-Pass/Symmetrical High-Pass /Narrow Low-Pass High-Pass

168-250MHz 168 / 6.625 CV1625-0611-11 CV1625-2611-11 CV1625-1611-11 CV1625-5611-11 CV1625-4611-11


168 / 6.625 0.5 - 3.0 ¼ 400 - varies with insertionloss setting 50 Ohms

• Suits VHF, PMR, Data and Trunking applications






RFI offer a range of cavity filters,isolators, duplexers, receiversmulticouplers and the TX RX T-Pass® multicoupling technology tocover this emerging frequencyband. Please contact your nearestRFI sales office for furtherinformation or assistance.

www.rfi.com.au95

Cavity Filters

-90

-80

-70

-60

Ch2

-40

-30

-20

-10

Ch1

Abs

dB

Span 10.000 MHz

2

1


200-300 MHz



215-275MHz 100 /4 CV2127-0411-11Please contact RFI to discuss your

requirements

CV2127-4411-11 CV2127-4411-11

220-300MHz 168 / 6.625 CV2230-0611-11 CV2230-4611-11 CV2230-4611-11

220-300MHz 254 / 10 CV2230-0111-11 CV2230-4111-11 CV2230-4111-11


100 / 40.5 - 3.0 ¼

125 - varies with insertion loss setting50 Ohms

168 / 6.625 and 254 / 10 400 - varies with insertion loss setting

• Suits VHF, PMR, Data and Trunking applications

• Ideal for new 220MHz allocations





RFI offer a complete range ofmulticoupling products andaccessories to support thisemerging frequency band.Please contact your nearestRFI sales office for furtherinformation or assistance.

www.rfi.com.au96

300-400 MHz

Cavity Filters

-90

-80

-70

-60

Ch2

-40

-30

-20

-10

Ch1

Abs

dB

Span 10.000 MHz

2

1




300-400MHz 100 /4 CV3040-0411-11

Please contact RFI to Discuss yourrequirements

CV3040-5411-11 CV3040-4411-11

300-400MHz 168 / 6.625 CV3040-0611-11 CV3040-5611-11 CV3040-4611-11

300-400MHz 254 / 10 CV3040-0111-11 CV3040-5111-11 CV3040-4111-11


100 / 40.5 - 3.0 ¼



• Suits UHF, PMR, Data and Trunking applications

• Suits commercial and military bands

• Ideal for analogue and digital technologies




RFI offer the superior TX RXbrand of multicoupling productsto support this Military andemerging commercial frequencyband. Please contact yournearest RFI sales office forfurther information or assistance.

www.rfi.com.au97

380-550 MHz

Cavity Filters

-90

-80

-70

-60

Ch2

-40

-30

-20

-10

Ch1

Abs

dB

Span 10.000 MHz

2

1




400-520MHz 100 /4 CV4052-0411-11 See next page

400-550MHz 168 / 6.625 CV4055-0611-11 CV4055-2611-11 CV4055-1611-11 CV4055-5611-11 CV4055-4611-11

400-530MHz 254 / 10 CV4053-0111-11 CV4053-2111-11 CV4053-1111-11 CV4053-5111-11 CV4053-4111-11


100 / 40.5 - 3.0 ¼



• Suits UHF, PMR, Data and Trunking applications






RFI offer a comprehensive range ofproducts and services to support thisfrequency band. Our unique offeringto the marketplace enables us toprovide the right solution for anysystem requirement. Please contactyour nearest RFI sales office forfurther information or assistance.

www.rfi.com.au98

400-530 MHz

Cavity Filters

-90

-80

-70

-60

Ch2

-40

-30

-20

-10

Ch1

Abs

dB

Span 5.000 MHz

2

1

2

2




400-530MHz 168 / 6.625 CV4053-0631-11 CV4053-2631-11 CV4053-1631-11 CV4053-5631-11 CV4053-4631-11

400-530MHz 254 / 10 CV4053-0131-11 CV4053-2131-11 CV4053-1131-11 CV4053-5131-11 CV4053-4131-11


168 / 6.625 and 254 / 10 0.5 - 3.0 ¾ 400 - varies with insertion loss setting 50 Ohms

-90

-80

-70

-60

Ch2

-40

-30

-20

-10

Ch1

Abs

dB

Span 10.000 MHz

2

1


-90

-80

-70

-60

Ch2

-40

-30

-20

-10

Ch1

Abs

dB

Span 5.000 MHz

2

1

2



Low-Pass High-Pass

400-420MHz 100 / 4 1.5 0.2 350 CV4042-5411-11 CV4042-4411-11

400-420MHz 100 / 4 0.75 0.4 250 CV4042-5412-11 CV4052-4412-11

450-480MHz 100 / 4 1.5 0.2 350 CV4548-5411-11 CV4548-4411-11

450-480MHz 100 / 4 0.75 0.4 250 CV4548-5412-11 CV4548-4412-11

480-520MHz 100 / 4 1.5 0.2 350 CV4852-5411-11 CV4852-4411-11

480-520MHz 100 / 4 0.75 0.4 250 CV4852-5412-11 CV4852-4412-11

400-420MHz 31x50 / 1.25x2 4.5 0.4 100 CV4020-5413-11

450-470MHz 31x50 / 1.25x2 5.0 0.4 100 CV4547-5413-11

470-490MHz 31x50 / 1.25x2 3.0 0.45 100 CV4749-5413-11

490-530MHz 31x50 / 1.25x2 3.0 0.45 100 CV4953-5413-11

Series Notch®

400-520MHz 100 / 4 1.2 0.6 125 CV4052-2411-11 CV4052-1411-11

RFI offer a comprehensiverange of multicoupling productsand supporting services for thispopular analogue and digitaltechnology frequency band.Please contact your nearest RFIsales office for furtherinformation or assistance.

www.rfi.com.au99

740-1000 MHz

Cavity Filters


-90

-80

-70

-60

Ch2

-40

-30

-20

-10

Ch1

Abs

dB

Span 5.000 MHz

2

1

2



800-1000MHz 100 /4 CV8010-0411-11 CV8010-2411-11 CV8010-1411-11 See Below

740-870MHz 168 / 6.625 CV7487-0611-11 CV7487-2611-11 CV7487-1611-11 CV7487-5611-11 CV7487-4611-11

800-1000MHz 168 / 6.625 CV8010-0611-11 CV8010-2611-11 CV8010-1611-11 CV8010-5611-11 CV8010-4611-11

920-960MHz 150 / 5.875 CV9296-0511-11 - - - -


100 / 4

0.5 - 3.0 ¾

125 - varies with insertion loss setting

50 Ohms168 / 6.625 400 - varies with insertion loss setting

150 / 5.875 500 - varies with insertion loss setting


Low-Pass High-Pass

800-866MHz 100 / 4 2.5 0.2-0.4 125 CV8086-5411-11 CV8086-4411-11

890-1000MHz 100 / 4 2.5 0.2-0.4 125 CV8910-5411-11 CV8910-4412-11

• Suits PMR, Data and Trunking applications


• Special high powered models also available




RFI offer a comprehensiverange of multicoupling productsand supporting services for thispopular analogue and digitaltechnology frequency band.Please contact your nearest RFIsales office for furtherinformation or assistance.

www.rfi.com.au100

1215-1300 MHz

Cavity Filters

-90

-80

-70

-60

Ch2

-40

-30

-20

-10

Ch1

Abs

dB

Span 15.000 MHz

2

1

2


Need a Cavity Filter for a frequency not shown here?The models of cavities represented in this catalogue are a sampling of our standard product range.RFI can also supply other cavity filter products in the extended range of 900KHz through to 2200MHz.

For further information on this extended range, or for information on a variant that you cannot find inthese pages, please contact your nearest RFI sales office for further assistance.

A Note about Cavity Filter Input Power RatingsThe ability of a cavity to handle RF input power is primarily determined by the insertion loss setting ofthe cavity. The table below is a guide to the maximum recommended input power limits that should betaken into consideration within a filtering system design.


Low-Pass High-Pass

1215-1300MHz 100 / 4 2.5 0.2-0.4 125 CV1200-5431-11 CV1200-4431-11

Diameter(mm /inches)

Insertion Loss

0.2dB 0.5dB 1.0dB 1.5dB 2.0dB 2.5dB 3.0dB

31x50 / 1.25x2 - 100 watts - - - - -

33x33 / 1.3x1.3 60 watts 30 watts - - - - -

50x50 / 2x2 100 watts 75 watts 50 watts - - - -

100 / 4 350 watts 125 watts 65 watts 45 watts 36 watts 32 watts 27 watts

168 / 6.625 N/A 400 watts 210 watts 150 watts 120 watts 105 watts 90 watts

254 / 10 N/A 400 watts 210 watts 150 watts 120 watts 105 watts 90 watts

Typical Power Ratings vs Insertion Loss Settings

www.rfi.com.au101

Cavity Accessories

Cavity Filter Loop AssembliesRFI provide a range of replacement cavity loopassemblies for the maintenance of our various cavityfilter styles and sizes.In addition, these loops can be purchased to facilitatethe re-configuration and re-use of spare cavities intoother applications.Loops for other specialised applications are alsoavailable. Please contact your nearest RFI salesoffice for further assistance.

Freq. Filter SizeCavity Filter Response Style

Bandpass Vari-Notch®LowPass

Vari-Notch®High Pass

Series Notch®Low Pass

Series Notch®High Pass T-Pass®

30-40 168mm (6”) /254mm (10”) CL0304-0611-00 CL0304-4611-00 CL0304-5611-00 CL0304-2611-00 CL0304-1611-00 See Note



66-88 168mm (6”) /254mm (10”) CL0608-0611-00 CL0608-4611-00 CL0608-5611-00 CL0608-2611-00 CL0608-1611-00 CL0608-7611-00



132-150 100mm 4 in CL1315-0411-00 CL1315-4411-00 CL1315-5411-00 CL1315-2411-00 CL1315-1411-00 See Note




168-250 168mm (6”) /254mm (10”) CL1625-0611-00 See Note See Note See Note See Note CL1625-7611-00

215-275 100mm 4 in CL2175-0411-00 CL2175-4411-00 CL2175-5411-00 See Note See Note See Note

300-400 168mm (6”) /254mm (10”) CL3040-0611-00 See Note See Note See Note See Note CL3040-7611-00






1215-1300 100mm 4 in CL1200-0411-00 CL1200-4411-00 CL1200-5411-00 See Note See Note See Note

Loops

Notes: Please contact your nearest RFI sales office for further details on these items.

www.rfi.com.au102

Cavity Mechanics

DIA

A

B

C

Frequency Band Wavelength Diameter(mm/inches)

Length (mm/inches)Weight (kg/lb) Connectors

"A" "B" "C"

30-40MHz ¼ 168 / 6.625 2620 / 103 2720 / 107 3350 / 132 23 / 50 N female

¼ 254 / 10 2670 / 105 2770/ 109 3400 / 134 31 / 68 N female

38-50MHz ¼ 168 / 6.625 2085 / 82 2185 / 86 2565 / 101 20 / 44 N female

¼ 254 / 10 2135 / 84 2235 / 88 2615 / 103 27 / 58 N female

50-60MHz ¼ 168 / 6.625 Contact RFI Contact RFI Contact RFI Contact RFI N female

66-88MHz ¼ 168 / 6.625 1245 / 49 1345 / 53 1650 / 65 13 / 28 N female

¼ 254 / 10 1295 / 51 1400 / 55 1700 / 67 18 / 39 N female

88-108MHz ¼ 168 / 6.625 915 / 36 1015 / 40 1195 / 47 10 / 21 N female

¼ 254 / 10 1015 / 40 1118 / 44 1295 / 51 14 / 34 N female

108-136MHz ¼ 168 / 6.625 815 / 32 915 / 36 1070 / 42 9 / 20 N female

¼ 254 / 10 865 / 34 965 / 38 1120 / 44 12 / 27 N female

132-150MHz ¼ 100 / 4 419 / 16.5 476 / 18.75 546 / 21.5 Contact RFI BNC female

¼ 168 / 6.625 660 / 26 790 / 31 865 / 34 7.7 / 17 N female

¼ 254 / 10 715 / 28 815 / 32 965 / 38 12 / 27 N female

144-174MHz ¼ 100 / 4 381 / 15 438 / 17.25 508 / 20 Contact RFI BNC female

¼ 168 / 6.625 610 / 24 740 / 29 825 / 32.5 7.2 / 16 N female

¼ 254 / 10 660 / 26 790 / 31 865 / 34 9.5 / 21 N female

168-250MHz ¼ 168 / 6.625 Contact RFI Contact RFI Contact RFI Contact RFI N female

174-200MHz ¼ 100 / 4 Contact RFI Contact RFI Contact RFI Contact RFI BNC female

200-300MHz ¼ 100 / 4 381 / 15 438 / 17.25 483 / 19 Contact RFI BNC female

¼ 168 / 6.625 430 / 17 530 / 21 630 / 25 Contact RFI N female

¼ 254 / 10 455 / 18 555 / 22 655 / 26 Contact RFI N female

300-400MHz ¼ 168 / 6.625 360 / 14 460 / 18 535 / 21 Contact RFI N female

¼ 254 / 10 385 / 15 485 / 19 560 / 22 Contact RFI N female

400-550MHz ¼ 100 / 4 229 / 9 298 / 11.75 337 / 13.25 1.8 / 4 BNC female

¼ 168 / 6.625 295 / 11.5 370 / 14.5 445 / 17.5 3.6 / 8 N female

¼ 254 / 10 320 / 12.5 395 / 15.5 470 / 18.5 7.7 / 17 N female

¾ 168 / 6.625 610 / 24 737 / 29 826 / 32.5 5 / 11 N female

¾ 254 / 10 660 / 26 787 / 31 863 / 34 10 / 22 N female

740-870MHz ¾ 168 / 6.625 150 / 6 200 / 8 225 / 9 3.6 / 8 N female

800-1000MHz ¾ 100 / 4 165 / 6.5 223 / 8.75 248 / 9.75 1.3 / 3 BNC female

¾ 168 / 6.625 150 / 6 200 / 8 225 / 9 3.6 / 8 N female

1¼ 168 / 6.625 Contact RFI Contact RFI Contact RFI 4.2 / 9.25 N female

1215-1300MHz ¾ 100 / 4 Contact RFI Contact RFI Contact RFI 1.3 / 3 BNC female

Mechanical

103

Duplexers

RFI can supply a diverse range of standard and customised duplexermodels for wireless systems applications.

We provide duplexers to suit both analogue and digital technologies. Ourrange includes bandpass, pseudo-bandpass, notch, Vari-Notch®, andcombination-response styles, with a variety of performance characteristics,sizes, and mounting configurations available.

A sampling of our range is presented in the following catalogue pages andour extensive product portfolio coupled with a comprehensive in-houseengineering design, manufacturing and testing capability ensures that wecan provide you with a duplexer solution to suit most installationrequirements from 30MHz to 3.6GHz and beyond.

If you cannot find what you need within these pages, we encourage you tocontact your nearest RFI sales office for further assistance.

www.rfi.com.au104

-5 fo +5

66-88 MHz

Duplexers

NotchThese models feature low insertion loss, high symmetrical isolationand excellent stability - all in a small and mechanically robust package.These duplexers comprise extruded aluminium resonators and integralintercabling that ensure excellent mechanical and electrical stability.Temperature compensation is achieved through superior cavity designand the careful selection of construction materials.These duplexers are supplied as a compact high-performance notch-only style, ideally suited to installations at uncongestedcommunications sites. Their small size is also ideally suited for mobileinstallations and telemetry applications.

• Ideal for VHF repeaters on low density sites

• Small size for mobile and telemetry applications

• Excellent Isolation

• Convenient mounting

Typical Response Curve - DP0607-3161-18

Electrical

Mechanical

Model Frequency (MHz) Min. FreqSeparation Insertion Loss Isolation Power Rating

(watts) Temp. Imped.

DP0607-3161-18 66-772.5MHz <1.5dB >72dB 50 -20 to +60ºC

-4 to +140ºF 50 OhmsDP0708-3161-18 77-88

Model ConstructionDimensions (mm/inches) Weight

(kg/lb) Connectors TemperatureH W D

DP0607-3161-18DP0708-3161-18

Paintedaluminium 32 / 1.25 154 / 6 112 / 4.4 0.75 / 1.65 BNC female -20 to +60ºC

-4 to +140ºF

DP0607-3161-18

-90

-80

-70

-60

-50

-40

-30

-20

-10

0

www.rfi.com.au105

66-88 MHz

Duplexers

NotchThis duplexer offers very high performance specifications and suitsapplications requiring excellent isolation at high transmit power levels. This model comprises six (6) resonators coupled together in a notch-notch configuration featuring low insertion loss and high port-to-portisolation.With their independently tunable pass and notch frequencies, theseduplexers are easy to tune in the field over a broad frequency range.The resonators are constructed from extruded hardened aluminiumthat is not easily deformed. Excellent tuning stability is thereforemaintained across the guaranteed extended temperature range. Inaddition, the passivated chromatic conversion coating (Alodine)provides excellent corrosion protection.The six helical resonators are mounted on a 483mm (19") wide rackpanel, in a compact configuration suited to installations where space islimited. They can be mounted on the front or rear rails of 19inchcabinets for added flexibility.

• Ideal for VHF repeaters

• Compact size

• Excellent Isolation

• Other mounting styles available

-90

-80

-70

-60

-50

-40

-30

-20

-10

0


DP0607-3261-51

Electrical

Mechanical


(watts) Imped.

DP0607-3261-51 66-772.5MHz 1.0dB (typ.) 100dB 125 50 Ohms

DP0708-3261-51 75-88



DP0607-3261-51DP0708-3261-51


92 / 3.6 482 / 19 262 / 10.3 5.5 / 12 Ports BNC femaleAntenna N female

-40 to +80ºC-40 to +176ºF

-5 fo +5

www.rfi.com.au106

66-88 MHz

Duplexers

BandPass (T-Pass®)This duplexer is ideal for VHF repeater base station applications oncongested sites. This model comprises four (4) cavity filters with bothcoarse and fine tuning controls, coupled together in a bandpassconfiguration using T-Pass® loops and therefore offers the addedflexibility of future channel expansion - in addition to rejectingunwanted frequencies outside its pass band.The T-Pass® design also provides a high RF input power capability.This duplexer is made from resonators constructed from extrudedhardened aluminium that is not easily deformed. Excellent tuningstability is therefore maintained across the guaranteed extendedtemperature range. The passivated chromatic conversion coating(Alodine) provides excellent corrosion protection.

• Expandable (uses T-Pass® technology)

• Ideal for VHF Repeaters on high density sites

• Bandpass response offers high “out of band”rejection

• High input power rating

DP0608-7641-41

Electrical

Mechanical

Model Frequency(MHz)

Min. FreqSeparation Insertion Loss Isolation Power Rating


DP0608-7641-41 66-88 2.0MHz 1.35dB 57dB 400 -40 to +80ºC-40 to +176ºF 50 Ohms

Model ConstructionDimensions (mm/inches)

Weight(kg/lb) Connectors

H W D

DP0608-7641-41 Alodined aluminium withsilver plated tuning elements 1675 / 66 482 / 19 +7.5 / 190

-7.5 / 190 54.5 / 120 N female

www.rfi.com.au107

66-88 MHz

Duplexers

BandPass / NotchThis duplexer is a combination bandpass/notch style in a cost-efficient arrangement that offers excellent performance in aconveniently sized package. It is ideal for VHF repeater base stationapplications on congested sites.This model comprises two (2) bandpass cavity filters with both coarseand fine tuning controls with a small 50mm (2") helical notch resonatorin each branch of the unit. An added feature of this unit is that it utilisesT-Pass® loops and therefore offers the added flexibility of futurechannel expansion - eliminating the need for additional antennas,cabling and associated costs.The unit is mounted on flush-style 483mm (19") rack or wall mountbrackets.Bandpass cavities are made from extruded hardenedaluminium that is not easily deformed. Excellent tuning stability istherefore maintained across the guaranteed extended temperaturerange. The passivated chromatic conversion coating (Alodine)provides excellent corrosion protection.



• Excellent Tx/Rx isolation

• Compact package

-90

-80

-70

-60

-50

-40

-30

-20

-10

0


DP0608-8641-31

Electrical

Mechanical




DP0608-8641-31 66-88 2.0MHz 1.9dB 70dB 100 -30 to +80ºC-22 to +176ºF 50 Ohms


(kg/lb) ConnectorsH W D

DP0608-8641-31 Alodined aluminium with silverplated tuning elements 1675 / 66 483 / 19 290 / 11.4 54.5 / 120 Tx/Rx ports BNC female

Antenna port N female

-10 fo +10

www.rfi.com.au108

66-88 MHz

Duplexers

Vari-Notch®This duplexer is ideal for VHF repeater base station applications onRF-congested sites. This model comprises four (4) cavity filters, withboth coarse and fine tuning controls, coupled together in a Vari-Notch® configuration, and therefore offers a pseudo-bandpassresponse.This model provides the benefits of both bandpass and notch response styles.The Vari-Notch® design also provides a high RF input powercapability, high port-to-port isolation, bandpass characteristics and theability to cater for narrow frequency separations.This duplexer is made from cavities constructed from extrudedhardened aluminium that is not easily deformed. Excellent tuningstability is therefore maintained across the guaranteed extendedtemperature range. The passivated chromatic conversion coating(Alodine) provides excellent corrosion protection.

• Suits RF congested sites


• Excellent isolation



-90

-80

-70

-60

-50

-40

-30

-20

-10

0


DP0608-3641-41

Electrical

Mechanical




DP0608-3641-41 66-88 0.35MHz 1.5dB >87dB 400 -40 to +80ºC-40 to +176ºF 50 Ohms


(kg/lb) ConnectorsH W D

DP0608-3641-41 Alodined aluminium withsilver plated tuning elements 1675 / 66 482 / 19 +7.5 / 190

-7.5 / 190 54.5 / 120 N female

-1.0 fo +1.0

www.rfi.com.au109

108-136 MHz

Duplexers

BandPass (T-Pass®)This duplexer is ideal for VHF repeater base station applications.This model comprises four (4) cavity filters with both coarse and finetuning controls coupled together in a bandpass configuration using T-Pass® loops and therefore offers the added flexibility of futurechannel expansion - in addition to rejecting unwanted frequenciesoutside its pass band.The T-Pass® design also provides a high RF input power capability.This duplexer is made from cavities constructed from extrudedhardened aluminium that is not easily deformed. Excellent tuningstability is therefore maintained across the guaranteed extendedtemperature range. The passivated chromatic conversion coating(Alodine) provides excellent corrosion protection.



• Bandpass response provides high out-of-bandrejection


DP1013-7641-41

Electrical

Mechanical


(watts) Temperature Imped.

DP1013-7641-41 108-136 4.0MHz 1.35dB 57dB 400 -40 to +80ºC-40 to +176 ºF 50 Ohms


Weight (kg/lb) ConnectorsH W D

DP1013-7641-41Alodined aluminium

with silver plated tuningelements

1220/ 48 482 / 19 +7.5 / 190-7.5 / 190 27 / 59.4 N female

www.rfi.com.au110

132-174 MHz

Duplexers

NotchThis duplexer is a compact high performance notch-only styleduplexer, ideally suited to installations at uncongestedcommunications sites. It features low insertion loss, high symmetricalisolation and excellent stability - all in a small and robust package.Many other models are available with customised Tx-Rx frequencyseparations to suit specific applications. Please contact your nearestRFI sales office for further assistance.These duplexers comprise of extruded aluminium resonators thatensure excellent mechanical and electrical stability. Temperaturecompensation is achieved through superior cavity design and thecareful selection of construction materials.

• Suits low density sites

• Ideal for mobile applications


• Convenient mounting style

DP1415-3161-18

Electrical

Mechanical



(watts) Imped.

DP1415-3161-18 148-1574.6MHz

<1.5dB >72dB 50 50 OhmsDP1517-3161-18 157-174

DP1517-3162-18 150-174 21MHz


Weight (kg/lb) Connectors TemperatureH W D

All Models Painted aluminium 32 / 1.25 154 / 6 97 / 3.8 0.6/1.32 BNC female -20 to +60ºC-4 to +140ºF

-90

-80

-70

-60

-50

-40

-30

-20

-10

0

-25 fo +25

www.rfi.com.au111

132-174 MHz

Duplexers

-90

-80

-70

-60

-50

-40

-30

-20

-10

0


Pseudo BandPassThis duplexer is ideal for typical analogue and digital VHF repeaterbase station applications. It offers excellent insertion loss, isolationand power rating characteristics in a space-efficient package.This model comprises four (4) helical resonator filters coupled togetherin a pseudo-bandpass configuration offering low insertion loss andhigh port-to-port isolation in an optimised design offering acombination of pseudo-passband selectivity and space-efficientphysical dimensions.This duplexer is made from resonators constructed from extrudedhardened aluminium that is not easily deformed. Excellent tuningstability is therefore maintained across the guaranteed extendedtemperature range. The passivated chromatic conversion coating(Alodine) provides excellent corrosion protection.



• Compact package


DP1417-6241-51

Electrical

Mechanical



(watts) Imped.

DP1315-6241-51 132-1504.5MHz 0.9dB >70dB 100 50 Ohms

DP1417-6241-51 144-174



All ModelsAlodined aluminium with

silver plated tuningelements

134 /5.25 482 / 19 185 /

7.25 4.5 / 10 TX RX ports BNC femaleAntenna N female

-40 to +80ºC-40 to +176ºF

-10 fo +10

www.rfi.com.au112

132-174 MHz

Duplexers

Pseudo BandPass/NotchThis duplexer offers high performance specifications and suitsanalogue and digital applications requiring more stringent performancecharacteristics than the four (4) cavity model - and with the samequality of design and construction.This model comprises six (6) helical resonator filters coupled togetherin a pseudo-bandpass/notch configuration offering low insertion lossand high port-to-port isolation in an optimised design offering acombination of pseudo bandpass selectivity, notch rejection, andspace-efficient physical dimensions.This duplexer is made from resonators constructed from extrudedhardened aluminium that is not easily deformed. Excellent tuningstability is therefore maintained across the guaranteed extendedtemperature range. The passivated chromatic conversion coating(Alodine) provides excellent corrosion protection.

• Suits very close Tx-Rx separations



• Compact package


DP1315-9261-51

Electrical

Mechanical


(watts) Imped.

DP1315-9261-51 132-1501.5MHz 1.4 - 2.2dB 90dB typ. 125 50 Ohms

DP1417-9261-51 144-174



All Models Alodined aluminium with silverplated tuning elements

134 /5.25

482 /19

185 /7.25 4.5 / 10 Ports BNC female

Antenna N female-40 to +80ºC-40 to +176ºF

Typical Response Curve - DP1315-9261-51@ 2.5MHz separation

-5 fo +5

-90

-80

-70

-60

-50

-40

-30

-20

-10

0

www.rfi.com.au113

132-174 MHz

Duplexers

Vari Notch®These duplexers are ideal for analogue and digital VHF repeater basestation applications. This model comprises four (4) cavity filters coupled together in a Vari-Notch® configuration and offers a pseudo-bandpass response withhigh RF input power capability, high port-to-port isolation and the abilityto cater for narrow frequency separations.These duplexers are made from resonators constructed from extrudedhardened aluminium that is not easily deformed. Excellent tuningstability is therefore maintained across the guaranteed extendedtemperature range. The passivated chromatic conversion coating(Alodine) provides excellent corrosion protection.These units are supplied on a 3RU rack mount shelf. Other mountingstyles are available on request.



• High input power capability

• Super performance


Electrical

Mechanical

DP1317-3441-31

-90

-80

-70

-60

-50

-40

-30

-20

-10

0

Typical Response Curve - DP1315-3641-41 @ 0.6MHz Separation


(watts) Imped.

DP1317-3441-31 132-174 0.5MHz 1.8dB 65dB 125

50 OhmsDP1417-3441-31 144-174 1.0MHz 1.2dB 75dB 125

DP1315-3641-41 132-1500.6MHz 1.5dB >85dB 400

DP1417-3641-41 144-174

Model Construction Dimensions (mm/inches) Weight (kg/lb) Connectors TemperatureH W D

DP1317-3441-31DP1417-3441-31



134 / 5.25 482 / 19 500 / 19.7 10 / 22N female -40 to +80ºC

-40 to +176ºFDP1315-3641-41DP1417-3641-41 915 / 33 482 / 19 +191 / 7.5

-191 / 7.5 23 / 50

-0.8 fo +0.8

www.rfi.com.au114

132-174 MHz

Duplexers

Model No. Frequency (MHz) Min FrequencySeparation

Insertion Loss @Fo (dB) Isolation Power Rating

(watts) Imped.

DP1315-7641-51 132-1503.0MHz 1.35dB 57dB 400 50 Ohms

DP1417-7641-51 144-174

BandPass (T-Pass®)This duplexer is ideal for VHF repeater base station applications. Thismodel comprises four (4) cavity filters with both coarse and fine tuningcontrols coupled together in a bandpass configuration using T-Pass®loops offering the added flexibility of future channel expansion - inaddition to rejecting unwanted frequencies outside its pass band.The T-Pass® design also provides a high RF input power capability.This duplexer is made from cavities constructed from extrudedhardened aluminium that is not easily deformed. Excellent tuningstability is therefore maintained across the guaranteed extendedtemperature range. The passivated chromatic conversion coating(Alodine) provides excellent corrosion protection.



• Excellent out-of-band rejection

• Various mounting styles available DP1417-7641-51

Electrical

Mechanical

Model No. ConstructionSize -(mm / inches) Weight

(Kg / Ib) Connectors TemperatureH W D

DP1315-7641-51DP1417-7641-51


838 / 33 482 / 19 +7.5 / 190-7.5 / 190 22.7 / 50 N female -40 to +80ºC

-40 to +176ºF

www.rfi.com.au115

215-275 MHz

Duplexers

Vari Notch®This duplexer is ideal for repeater base station applications. It offershigher performance specifications and suits applications requiringstringent performance characteristics.This model comprises four (4) cavity filters coupled together in a Vari-Notch® configuration offering low insertion loss and high port-to-portisolation. This optimised design delivers a combination of passbandselectivity, rejection and space-efficient physical dimensions.This duplexer is made from resonators constructed from extrudedhardened aluminium that is not easily deformed. Excellent tuningstability is therefore maintained across the guaranteed temperaturerange. The passivated chromatic conversion coating (Alodine)provides excellent corrosion protection.





DP2127-3441-31

-90

-80

-70

-60

-50

-40

-30

-20

-10

0


Electrical

Mechanical



(watts) Imped.

DP2127-3441-31 215-275 1.6MHz 1.2dB >80dB 250 50 Ohms

Model Construction Dimensions (mm/inches) Weight (kg/lb) Connectors TemperatureH W D

DP2127-3441-31 Alodined aluminium with silverplated tuning elements 134 / 5.25 482 / 19 400 / 15.75 500 / 19.7 N female -40 to +80ºC

-40 to +176ºF

-2 fo +2

www.rfi.com.au116

300-400 MHz

Duplexers

Vari Notch®This duplexer is ideal for repeater base station applications. It offershigher performance specifications and suits applications requiringstringent performance characteristics.This model comprises four (4) cavity filters coupled together in a Vari-Notch® configuration offering low insertion loss and high port-to-portisolation. This optimised design delivers a combination of passbandselectivity, rejection and space-efficient physical dimensions.This duplexer is made from resonators constructed from extrudedhardened aluminium that is not easily deformed. Excellent tuningstability is therefore maintained across the guaranteed extendedtemperature range. The passivated chromatic conversion coating(Alodine) provides excellent corrosion protection.




• Super performance

Electrical

Mechanical



(watts) Imped.

DP3040-3441-31 300-400 3.0MHz 1.0dB typ. >80dB 250 50 Ohms



DP3040-3441-31

Alodined aluminium with silverplated tuning elements

mounted on 3RU powdercoated shelf

134 / 5.25 482 / 19 400 / 15.75 9 / 19 N female -40 to +80ºC -40 to +176ºF

DP3040-3441-31

-90

-80

-70

-60

-50

-40

-30

-20

-10

0


-4 fo +4

www.rfi.com.au117

400-520 MHz

Duplexers

NotchThis duplexer is ideal for repeater base station applications on lowdensity sites. These duplexers are compact high performance notch-only style duplexers, ideally suited to installations at uncongestedcommunications sites. They feature low insertion loss, highsymmetrical isolation and excellent stability - all in a small and robustpackage.These duplexers are comprised of extruded aluminium resonators andsolid copper jacketed intercabling that ensures excellent mechanicaland electrical stability. Temperature compensation is achieved throughsuperior cavity design and the careful selection of constructionmaterials.These models are available in other frequency bands and Tx-Rxseparations on request.

• Compact package size

• Ideal for low density sites

• Suits mobile and link applications

• Rugged construction style

DP5052-9161-18

-90

-80

-70

-60

-50

-40

-30

-20

-10

0


Electrical

Mechanical

Model Frequency (MHz) FreqSeparation Insertion Loss Isolation Power Rating

(watts) Imped.

DP4042-9161-18 400-420 9.45MHz

<1.5dB >72dB 50 50 OhmsDP4547-9161-18 450-470 9.5MHz

DP4750-9161-18 470-500 5.2MHz

DP5052-9161-18 500-520 10MHz



All modelsPainted

aluminium withhardline cabling

32 / 1.25 154 / 6 110 / 4.3 0.58/1.3 BNC female -20 to +60ºC-4 to +140ºF

-20 fo +20

www.rfi.com.au118

400-520 MHz

Duplexers

Vari Notch®These duplexers are ideal for repeater base station applications. Theyoffer high performance characteristics and suit applications withstringent performance specifications.This model comprises four (4) cavity filters coupled together in a Vari-Notch® configuration offering low insertion loss and high port-to-portisolation. This optimised design delivers a combination of passbandselectivity, rejection and space-efficient physical dimensions.These duplexers are made from resonators constructed from extrudedhardened aluminium that is not easily deformed. Excellent tuningstability is therefore maintained across the guaranteed extendedtemperature range. The passivated chromatic conversion coating(Alodine) provides excellent corrosion protection.


• Suits narrow frequency separations


• Excellent out-of-band isolation

• Convenient rack mount styleTypical Response Curve - DP4052-3441-31

Electrical

Mechanical


Min. FreqSeparation

Insertion Loss(typ.) Isolation Power Rating

(watts) Imped.

DP4052-3441-31 400-520 3.0MHz 0.6dB >80dB 350 50 Ohms



DP4052-3441-31

Alodined aluminium withsilver plated tuning elements

with powder coated 5RUfront panel

223 / 8.75 482 / 19 305 / 12 6.2 / 13.6 N female -40 to +80ºC-40 to +176ºF

DP4052-3441-31

-90

-80

-70

-60

-50

-40

-30

-20

-10

0

-4 fo +4

www.rfi.com.au119

400-530 MHz

Duplexers

Vari Notch®These duplexers are ideal for repeater base station applications. Theyoffer high performance characteristics and suit applications withstringent performance specifications.This model comprises four (4) cavity filters coupled together in a Vari-Notch® configuration offering low insertion loss and high port-to-portisolation. This optimised design delivers a combination of passbandselectivity, rejection and space-efficient physical dimensions.These duplexers are made from resonators constructed from extrudedhardened aluminium that is not easily deformed. Excellent tuningstability is therefore maintained across the guaranteed extendedtemperature range. The passivated chromatic conversion coating(Alodine) provides excellent corrosion protection.These models are available in centre and flush front panel stylessuited for 483mm (19in) rack mounting, in addition to a flat panelmobile-mount configuration.

• Compact package


• Proven performance

• Mobile mount and other configurations available

DP4749-3541-31

-90

-80

-70

-60

-50

-40

-30

-20

-10

0


ElectricalModel Frequency (MHz) Min. Freq

Separation Insertion Loss Isolation Power Rating(watts) Imped.

DP4044-3541-31 400-440 4.5 MHz

1.2dB 80dB 100 50 OhmsDP4447-3541-31 440-470

5.0MHzDP4749-3541-31 470-490

DP4953-3541-31 490-530

MechanicalModel Construction

Dimensions (mm/inches)Weight (kg/lb) Connectors Temperature

H W D

All modelsAlodined aluminium

with silver platedtuning elements

32 / 1.25 154 / 6 200 / 7.9 3.2 / 7.2 Ports BNC femaleAntenna N female

-40 to +80ºC-40 to 176ºF

-10 fo +10

www.rfi.com.au120

400-530 MHz

Duplexers

Vari-Notch® (Wide Passband)These duplexers have been designed for applications requiringduplexers with up to 4MHz wide passbands such as mobile trunkingapplications and in-plant combining of multi-channel transmit andreceive for single-antenna operation.They offer high performance characteristics and suit applications withstringent performance specifications including high power operationand excellent VSWR characteristics across the entire passband(s).Unlike some band-reject style duplexers, these models provide astable VSWR over a genuine 4MHz wide passband, along with acomplimentary 4MHz wide notch. This ensures that constant, stableisolation and insertion loss characteristics are maintained across theentire band. The Vari-Notch® circuit by design, also offers a degree ofbandpass protection that further enhances the scope of application forthis duplexer to include many shared sites.These models each comprise eight (8) cavity filters coupled togetherin a Vari-Notch® configuration and mounted on a 1RU 483mm(19inch) cantilever shelf. Alternatively, a mobile mount version isavailable.

• Ideal for multi-channel or frequency agileapplications

• Mobile mount and other versions available

• Up to 4MHz passband

DP4953-3581-31

Electrical

Mechanical


(watts) Imped.

DP4044-3581-31 400-440

5.0MHz 2.0dB >70B (typ.) 100 50 OhmsDP4447-3581-31 440-470

DP4749-3581-31 470-490

DP4953-3581-31 490-530



All Models



on 1RU shelf

50 / 2 483 / 19 200 / 8.0 6 / 13.2

Tx/Rx PortsBNC female

AntennaN female

-40 to +80ºC-40 to +176ºF

Typical Response Curve - DP4953-3581-31-20 fo +20

-90

-80

-70

-60

-50

-40

-30

-20

-10

0

www.rfi.com.au121

400-520 MHz

Duplexers

Vari Notch® / BandpassThis duplexer is ideal for repeater base station applications. It offershigher performance and suits applications requiring stringentspecification characteristics.This model comprises four (4) cavity filters coupled togetherconfiguration offering low insertion loss and high port-to-port isolationin an optimised design offering a combination of passband selectivity,notch rejection and space-efficient physical dimensions.This duplexer is made from resonators constructed from extrudedhardened aluminium that is not easily deformed. Excellent tuningstability is therefore maintained across the guaranteed extendedtemperature range. The passivated chromatic conversion coating(Alodine) provides excellent corrosion protection.

• Ideal for high and medium density sites

• Compact package


• Combined Vari-Notch®/Bandpass characteristics


Electrical

Mechanical


Min. FreqSeparation

Insertion Loss(typ.)

Isolation(typ.)


DP4052-8441-31 400-520 5.0MHz 1.0dB >70dB 125 50 Ohms


Weight(kg/lb Connectors TemperatureH W D

DP4052-8441-31



134/5.25 482 / 19 305 / 12 6.2 / 13.6 N female -40 to +80ºC-40 to +176ºF

DP4052-8441-31

-90

-80

-70

-60

-50

-40

-30

-20

-10

0

-5 fo +5

www.rfi.com.au122

400-520 MHz

Duplexers

BandpassThis duplexer are ideal for repeater base station applications. It offershigher performance and suits applications with stringent specifications.This model comprises four (4), 100mm (4 in) cavity filters coupledtogether in a bandpass / bandpass configuration offering low insertionloss and high port-to-port isolation in an optimised design incorporatinga combination of passband selectivity, out-of-band rejection andspace-efficient physical dimensions.This duplexer is made from resonators constructed from extrudedhardened aluminium that is not easily deformed. Excellent tuningstability is therefore maintained across the guaranteed extendedtemperature range. The passivated chromatic conversion coating(Alodine) provides excellent corrosion protection.

• Ideal for analogue and digital applications


• Compact package

• Excellent out-of-band rejection

• Combined mounting styles availableTypical Response Curve - DP4052-0441-31

@ 9.5MHz Tx-Rx separation

Electrical

Mechanical


Min. FreqSeparation


Isolation(typ.)


DP4052-0441-31 400-520 5.0MHz 1.5dB Varies with Tx-Rxseparation 125 50 Ohms



DP4052-0441-31



134/5.25 482 / 19 305 / 12 6.2 / 13.6 N female -40 to +80ºC-40 to +176ºF

DP4052-0441-31

-90

-80

-70

-60

-50

-40

-30

-20

-10

0

-20 fo +20

www.rfi.com.au123

400-520 MHz

Duplexers

Bandpass (Wide Passband)These duplexers have been designed for applications requiringduplexers with up to 1.5MHz wide passbands such as trunkingapplications and combining of multi-channel transmit and receivemulticouplers for single-antenna operation.They offer high performance characteristics and suit applications withstringent performance specifications including high power operationand excellent VSWR characteristics across the entire passband(s).These models provide a stable VSWR over a genuine wide passband.This ensures that constant, stable isolation and insertion losscharacteristics are maintained across the entire band. The Bandpassdesign, also offers out-of-band protection that further enhances thescope of application for this duplexer to include high density sites.These models each comprise six (6) cavity filters coupled together ina Bandpass / Bandpass configuration and mounted on a 5RU 483mm(19inch) cantilever shelf.

• Suits analogue and digital applications


• Suits multi-channel combining to a single antenna

• Up to 1.5MHz passband

DP4052-0461-31

Electrical

Mechanical

Model Frequency (MHz) Min. FreqSeparation


Isolation(typ.)


DP4052-0461-31 400-520 5.0MHz 2.0dBVaries with

passband and Freq.Separation

250 50 Ohms



DP4052-0461-31


silver platedtuning elementson 5RU panel

223 / 8.75 483 / 19 305 / 12 10 / 22 N female -40 to +80ºC-40 to +176ºF


-10 fo +10

-90

-80

-70

-60

-50

-40

-30

-20

-10

0

www.rfi.com.au124

400-520 MHz

Duplexers

Bandpass (Wide Passband)These duplexers have been designed for applications requiringduplexers with up to 5MHz wide passbands such as trunkingapplications and combining of multi-channel transmit and receivemulticouplers for single-antenna operation.They offer high performance specifications and suit applicationsrequiring stringent performance characteristics including high poweroperation and excellent VSWR characteristics across the entirepassband(s).Unlike some other wide passband duplexers available in themarktetplace these models provide a stable VSWR over a genuine5MHz wide passband. This ensures that constant, stable isolation andinsertion loss characteristics are maintained across the entire band.The Bandpass design, further enhances the scope of application forthis duplexer to include high density sites.These models each comprise eight (8) cavity filters coupled togetherin a Bandpass / Bandpass configuration and mounted on a 5RU483mm (19inch) cantilever shelf.



• Suits multi-channel combining to a single antenna

• Up to 5MHz passband (or wider upon request)

DP4052-0481-31

Electrical

Mechanical

Model Frequency (MHz) Min. FreqSeparation


Isolation(typ.)


DP4052-0481-31 400-520 5.0MHz (Typ.) 2.0dBVaries with

passband and Freq.Separation

250 50 Ohms



DP4052-0481-31


silver platedtuning elementson 5RU panel

223 / 8.75 483 / 19 305 / 12 13 / 28 N female -30 to +80ºC-22 to +176ºF


-90

-80

-70

-60

-50

-40

-30

-20

-10

0

-20 fo +20

www.rfi.com.au125

400-520 MHz

Duplexers

Vari-Notch®This duplexer is ideal for repeater base station applications. They offerhigh performance characteristics and suit applications with stringentperformance specifications with narrow transmit-receive frequencyseparation eg. CB radio repeaters. This model comprises six (6) cavity filters coupled together in a Vari-Notch® configuration offering low insertion loss and high port-to-portisolation in an optimised design incorporating a combination ofpassband selectivity, rejection and space-efficient physicaldimensions.These duplexers are made from cavities constructed from extrudedhardened aluminium that is not easily deformed. Excellent tuningstability is therefore maintained across the guaranteed extendedtemperature range. The passivated chromatic conversion coating(Alodine) provides excellent corrosion protection.

• Suits narrow frequency separations


• Excellent port-port isolation

• Convenient rack mount style

DP4052-3461-31

-90

-80

-70

-60

-50

-40

-30

-20

-10

0


Electrical

Mechanical


Min. FreqSeparation


Isolation(typ.)


DP4052-3461-31 400-520 0.75MHz 2.2dB >95dB 125 50 Ohms

Model Construction Dimensions (mm/inches) Weight(kg/lb Connectors TemperatureH W D

DP4052-3461-31Alodined aluminium with silver

plated tuning elements withpowder coated 5RU front panel

223 / 8.75 483 / 19 305 / 12 10 / 22 N female -30 to +60ºC-22 to 140ºF

-10 fo +10

www.rfi.com.au126

800-960 MHz

Duplexers

NotchThis duplexer is a compact high performance notch-only style duplexerideally suited to mobile installations and use at uncongestedcommunications sites. It features low insertion loss, high symmetricalisolation and excellent stability - all in a small and robust package.These duplexers comprise extruded aluminium resonators and solidcopper jacketed intercabling that ensure excellent mechanical andelectrical stability. Temperature compensation is achieved throughsuperior cavity design and careful selection of construction materials.

• Suits low density sites

• Compact package

• Ideal for mobile and link applications

• Alternate frequency spacings available

• Other configurations available on request

DP8287-3161-18

-90

-80

-70

-60

-50

-40

-30

-20

-10

0


Electrical

Mechanical



(watts) Imped.

DP8287-3161-18 820-870 45.0MHz<1.5dB >72dB 50 50 Ohms

DP8594-3161-18 850-940 76.0MHz


All models Painted aluminium withhardline cabling 32 / 1.25 154 / 6 93 / 3.66 0.58 / 1.3 BNC female -20 to +60ºC

-4 to +140ºF

-100 fo +100

www.rfi.com.au127

800-1000 MHz

Duplexers

BandpassThis duplexer is ideal for repeater base station and link transceiverapplications.This model comprises two (2) bandpass cavity filters and thereforeoffers the benefits of rejecting unwanted frequencies outside theirrespective pass bands. This duplexer is made from resonators constructed from extrudedhardened aluminium that is not easily deformed. Excellent tuningstability is therefore maintained across the guaranteed extendedtemperature range. The passivated chromatic conversion coating(Alodine) provides excellent corrosion protection.This model is supplied on a powder-coated, 3RU, 483mm (19in) rackmount shelf for easy installation.


• Ideal for link applications


• Excellent for out-of-band rejection


DP8010-0421-31

-90

-80

-70

-60

Ch2

-40

-30

-20

-10

Ch1

Abs

dB


Electrical

Mechanical



(watts) Imped.

DP8010-0421-31 800-1000 45.0MHz 1.5dB >35 dB 125 50 Ohms



DP8010-0421-31Alodined aluminium with silver

plated tuning elements with3RU power-coated front panel

134 / 5.25 482 / 19 300 / 12 6.3 / 13.2 N female -40 to +80°C-40 to +176°F

-50 fo +50

www.rfi.com.au128

800-1000 MHz

Duplexers

Vari Notch®This duplexer is ideal for repeater base station applications. It offershigher performance specifications and suits applications requiringstringent performance characteristics.This model comprises four (4) cavity filters coupled together in a Vari-Notch® configuration offering low insertion loss and high port-to-portisolation in an optimised design, offering a combination of passbandselectivity, rejection and space-efficient physical dimensions.This duplexer is made from resonators constructed from extrudedhardened aluminium that is not easily deformed. Excellent tuningstability is therefore maintained across the guaranteed extendedtemperature range. The passivated chromatic conversion coating(Alodine) provides excellent corrosion protection.

• Excellent port-port isolation


• Narrow frequency separation versions available(3.6MHz broadcast studio links)


DP8086-3441-31

-90

-80

-70

-60

-50

-40

-30

-20

-10

0


Electrical

Mechanical



(watts) Imped.

DP8086-3441-31 800-866 45.0MHz0.8dB 90dB 125 50 Ohms

DP8996-3441-31 890-960 39.0MHz


DP8086-3441-31DP8996-3441-31

Alodined aluminium with silverplated tuning elements with 3RU

powder-coated front panel134 / 5.25 482 / 19 305 / 12 4.7 / 10.3 N female -40 to +80°C

-40 to +176°F

-60 fo +60

129

SIGN

ALBOOSTER SYSTEM

S

RebroadcastSystems

Rebroadcast systems (also known as Repeater Amplifiers, SignalBoosters, Bi-Directional Amplifiers, and Coverage Extenders or CellEnhancers) extend radio systems' coverage into areas where abruptpropagation losses prevent reliable communication.

They can be used to improve the coverage of AM/FM radio, two-way radio,paging, cellular, telemetry and control systems, wireless data and WLANsystems and they can be deployed to cater for both analogue and digitaltechnologies across frequencies from 500KHz to above 5.8GHz.

Applications include network coverage black spots, airports, high-risebuildings, shopping centres, road and rail tunnels, mines, ships, and otherrestrictive coverage situations.

RFI offers a range of quality channel-selective and band-selective(broadband) rebroadcast equipment to suit a wide variety of applications,frequency bands, and network technologies.

We offer stand-alone, cable-fed and radio-over-fibre (RF/OF) solutions tosatisfy the design requirements of any operational application.

A sampling of our standard product technologies is shown in this catalogue,but we can supply product and complete customised solutions for anyapplication.

If you require a Rebroadcast System solution not shown in this catalogue,please do not hesitate to contact your local RFI sales office for furtherassistance.

130

RebroadcastSystems

IntroductionRFI has designed, manufactured and supplied one-way (uni-directional) and two-way (bi-directional) rebroadcast equipment to meet a variety of analogue anddigital system performance requirements. These are available for a variety ofinstallation environments - in formats ranging from single frequency, low powerinstallations to very complex multi-channel, multi-band, high power configurationsintended for operations-critical public safety and road and rail infrastructure.We design our rebroadcast products using tried and proven engineering practices,along with quality components and associated hardware from world-leadingsuppliers.

ApplicationsApplications for Rebroadcast Systems include:

Â Inside BuildingsMany buildings restrict coverage because windows, reinforced concrete and metalin their construction act as an effective RF screen. Distributed antennas orradiating cables within these buildings, and external antennas or landline linksinteracting with the external network, can be utilised to enhance coverage insidebuildings.

Â Tunnels and MinesBored or cut-and-cover tunnels can be provided coverage by using directionalantennas or radiating cable running the length of the tunnel. In longer tunnels orcomplex tunnel networks such as railways or mines, Rebroadcast System unitscan also be used as in-line amplifiers to distribute and re-amplify signals from in-plant or external network base stations to provide coverage throughout suchtunnels.

Â Coverage Black SpotsLocal topology such as mountains and valleys frequently cause propagationblackspots. Improved coverage into such areas can be realised usingRebroadcast System technologies. Strategically located Rebroadcast Systemunits can "eavesdrop" to a host site (or network), and rebroadcast it into the blackspot area(s), thereby reducing the effects of such poor coverage areas.

Â Short Term Coverage RequirementsConferences, sporting events and festivals can require temporary coverage. Insuch cases, Rebroadcast System units can be installed to repeat channels from anetwork site located some distance away that has spare traffic capacity and thatwould otherwise be out-of-range of users at the event.

Types of Rebroadcast ArchitecturesÂ RF "Band Selective"Band Selective units (also called "broadband") can handle large numbers ofchannels. Units can be configured to handle multiple sub-bands (i.e. 400-404MHzand 406-409MHz) or entirely separate bands (i.e. 400-420MHz and 860-870MHz)and can be supplied to meet the requirements of all of the international analogueand digital wireless systems standards including AM and FM Broadcast, PMR,SMR, P25, TETRA, GSM, CDMA, 3G, Wireless Data, Satellite, CCTV, WLAN, etc.Each unit is configured to suit each application's specific requirements. Therequired filtering to provide for the required pass bandwidths in each signal path isassembled from our wide range of multicoupling systems modules.Small signal, low-noise amplifiers and high power Class A amplifiers are selectedto give high performance and economic solutions for each individual application.Output powers from below 0.5 watt to above 100 watts can be provided to satisfymultiple-carrier applications in congested RF environments.Â Key features of Band Selective style:

• Suitable for universal application within a given network without alignmentto local site frequencies and is particularly suited to in-building and in-tunnel communications systems.

• Fully compatible with modern system technologies such as dynamicfrequency allocation and frequency hopping.

• Automatic Gain Control (AGC) or Output Level Control (OLC) is usuallyfitted to protect the system against operational saturation caused by unitsoperating nearby the unit's antennas/radiating cables.

• Available in 19inch rack, wall or customised mounting styles and invarious environmental housing ratings.

Â RF "Channel Selective"

Channel Selective units provide the required filtering and associated circuitry toprovide the selectivity for the unit to handle individual channels. This is usuallyrequired where the user is operating within a shared frequency band or where it isnot possible to co-ordinate the geographic location of systems operating onadjacent channels.Units can be configured to handle single or multiple channels across single ormultiple sub-bands (i.e. 400-420MHz and 450-470MHz) or entirely separate bands(i.e. 400-420MHz and 860-870MHz). These can be supplied to meet therequirements of all of the international analogue and digital wireless systemsstandards including AM and FM Broadcast, PMR, SMR, P25, TETRA, GSM,CDMA, 3G, Wireless Data, Satellite, CCTV, WLAN, etc.



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RebroadcastSystems

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RebroadcastSystems

Each unit is configured to suit each application's specific requirements. Channelised units utilise multicoupling, crystal, or Surface Acoustic Wave (SAW)filters to provide the required channel bandwidths (from 12.5KHz to 200KHz orwider) required by the application.Typical units incorporate channelised modules in both uplink and downlink signalpaths - although "hybrid" band-selective/channelised systems are also available tosuit specialised applications.Small signal, low-noise amplifiers and high power Class A amplifiers are selectedto give high performance and economic solutions for each individual application.Output powers from below 0.5 watts to above 100 watts can be provided to satisfymultiple-carrier applications in congested RF environments.

RF Over FibreRFI has a demonstrated experience in providing RF over fibre (RF/OF) stylerebroadcast equipment.Over long distances, conventional "daisy-chained" coaxial cable designs arelimited by cable attenuation and amplifier intermodulation noise levels. RF/OFtechniques can allow a large number of radio channels across one or morefrequency bands and/or technologies to be transported using fibre optic cable withminimal degradation of the original RF signals. Multi-band signals are combinedprior to RF over fibre conversion, and multi-band filtering and amplifier techniquesare used to recover the optical signals back to RF. Therefore, RF/OF solutions are particularly suited to the extended coveragerequirements of large road and rail tunnels and underground mine complexes andmay be deployed for both band-selective and channelised rebroadcastarchitectures - and for all analogue and digital technologies in any frequency band.In addition, unit reliability can become an increasing issue in that failure of one unitcan impact the performance of the rest of the system "down-stream" from a failure.In fibre-fed systems, each (or alternatively, units at regular intervals in the design)remote tunnel unit can be fed by fibre links from the master site. In some designarchitectures this can provide a significantly more robust solution against failureand increase system reliability in safety-of-life and operations-critical operationalenvironments.

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RebroadcastSystems

The key components of a RF/OF solution are;Â Fibre Optic CableMonomode (also known as Single Mode) fibre has a very small diameter fibreinner core. The converted RF signals that are transmitted along the fibre arerelatively unaffected by reflection and refraction, therefore allowing the opticalsignals to travel very long distances - without compromising the quality of thesignal received at the far end of the cable.The alternative to Monomode fibre cable is Multimode cable. This type of fibre isnot as well suited to RF/OF applications as the optical signals passing through aMultimode fibre cable are subject to degradation from the reflections andrefractions that occur within this type of fibre cable. As a result, Multimode fibre isnot generally recommended for applications requiring long transmission distancesbetween radio sites within a network design, and as such Multimode fibre isgenerally used only in smaller network designs.

Â Fibre Optic TransmittersThe Fibre Optic Transmitter (and associated receiver) must operate on a commonoptical wavelength. Two wavelengths are commonly used for these applications -1310nm and 1550nm. In general, the transmitted RF power applied to the RF to fibre converter is limited to a maximum level of between 0dBm and +10dBm(model and configuration dependent) to prevent overload of the RF to fibre converter circuitry. This is particularly relevant in multi-channel and multi-band applications where peak powers of multiple carriers can add co-incidentally.An alarm monitoring circuit monitors the bias current of the optical transmissionLED and indicates an alarm state if minimum or maximum safe operatingcharacteristics are exceeded.

Â Fibre Optic ReceiversThe Fibre Optic Receiver recovers the optical signal from the fibre cable andconverts it back to an RF signal. This signal is then fed to a low-noise amplifier.The intermodulation (IM) performance of this amplifier determines the outputsignal per carrier of the fibre optic receiver. For most applications, the RF carrierlevels from the fibre optic receiver unit will typically be around -10dBm for eachrecovered signal. These signals are then amplified by additional amplifier stagesto increase them to the specific output levels required within the overall systemdesign.An alarm facility is provided to indicate a low optical input level signal at the inputof the fibre optic receiver unit.

Â Fibre Optic TransceiversIn many designs, transmit and receive paths within the fibre portion of the designutilise separate fibre cables. This is convenient in most applications becausemodern fibre cables are actually multi-strand, and have many separatefibres within each cable.However, in some applications it may be desirable toutilise a single fibre for both transmit and receivesignals. In such cases, the 1310nm and 1550nmoptical wavelengths may be duplexed onto the commonfibre.

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RebroadcastSystems

Wave Division Multiplexing (WDM) is generally used to provide this capability.Using WDM techniques, the separate fibre optic transmitter and receiver modulesmay be combined into a single Fibre Optic Transceiver unit.

Â Multiple-Wave Diversity and Add-Drop CapabilityTransceivers are available to provide Diversity and Add-Drop capability in systemsdesigns. Using different optical wavelengths, multiple units can be implementedto share common fibre optic cables - thereby providing flexibility in systems'designs to cater for receiver diversity or multiple voting nodes. In addition, sitescan be daisy-chained along a long fibre routes to provide the optimum use ofrented fibre cables.

Â Design ConsiderationsThe respective fibre optic modules employ various design techniques toimprove overall performance. These include the use of DFB laser diodes,optical interference reduction, APC (automatic power control) to minimiselevel variations over a broad temperature range, low noise linearpreamplifiers with wide bandwidth to reduce noise and distortion figures, andthe use of amplifier circuitry offering good 3rd order intermodulation pointperformance to reduce overall intermodulation susceptibility and to providehigh recovered RF signal output levels.

Â Optical Couplers and SplittersSimilar to RF applications, the optical signals from a "master" site may becoupled or divided across several different fibres to then feed multiple"remote" sites. This is particularly suited to designs where the "master site"is geographically centralised in the network, or where central switchingarchitecture is employed (i.e. trunking controllers or voting hubs).

Â Key Features of RF/OF techniques- Particularly suited to very long or complex tunnel system layouts.- Overcomes long-distance cable attenuation and performance

degradation, and improves system amplifier intermodulation noiseperformance.

- Provides additional operations resiliency in critical applicationsthrough the use of multiple fibre cable interconnectivity within thedesign and/or fireproof fibre cable routing.

Â System SolutionsRFI can design an overall system solution to meet each application's uniquechannel capacity, frequency band(s) or technology requirements.Simple RF/OF systems may be employed in single channel rebroadcastapplications for the in-building and mining markets. Multi-channel, multi-bandsolutions often include AM/FM Broadcast radio, VHF and/or UHF paging, voice ordata two-way communications channels, 800MHz trunking or wireless data,cellular technologies, and specialised applications such as WLAN. These largersystem requirements are often identified in rail and road tunnel, airport, and largein-building applications. The specific layout and architecture of the design is determined by the geographiclayout of the installation, operational coverage requirements, and sometimes thesystem structure (i.e. centralised trunking controller or voting hub).

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RebroadcastSystems

All Frequencies, All Technologies, Simple InstallationRFI can supply rebroadcast solutions for all frequency bands and for alltechnologies.Road tunnel designs commonly incorporate a combination of frequency bandsand technologies to provide the rebroadcast of AM/FM Broadcast Radio, VHFPaging, UHF PMR or Data, 800MHz Trunking and multiple Cellular networks.Drawing on our acknowledged expertise in network and multicoupler design, wecan often combine all of these services onto a single radiating cable for signaldistribution throughout the tunnel areas. As a result, the cost of cables, weightand space required in cable trays, installation hardware and labour aresignificantly reduced. In addition, the installation phase of the rebroadcast systemcan be significantly reduced through these reductions - an additional advantage inany project!We can supply single or multi-frequency band designs to suit most networkplatforms including:

GSM900 PMR AM Broadcast NMTGSM1800 SMR FM Broadcast PagingPCS1900 TETRA GPS W-LAN/Wi-FiCDMA P25 Satellite 3GAMPS CCTV MobitexTACS i-DEN RD-LAP

Â Audio Break-In CapabilityOur system designs can be provided with optional audio break-in capability. Thisallows live or pre-recorded announcements to be inserted into the rebroadcastsystem - overriding the usual communications traffic.These systems are widely used to provide emergency and operations updateinformation to travellers through their vehicle AM/FM radios. Similar capabilities can be provided in most of our designs in other frequencybands, allowing command and control messages to be imposed onto two-wayradio channels for incident control and management operations.

Â Alarm Monitoring and ControlRebroadcast systems can also be provided with various levels of Alarm Monitoringand Control capabilities.Monitoring can be provided utilising a range of approaches including closedcircuits (i.e. relay contacts) through to remote computer terminals or TCP/IPconnectivity through LANs or the Internet.In local systems, alarms can be presented via contact closures to localsupervisory equipment. In remote systems the alarms can be sent back overdedicated links - or the same fibre used in remote systems.Dedicated software can be provided to monitor system status and alarms. Othertunnel systems (such as traffic management systems) can be utilised to monitorthese signals as a part of their overall control and reporting functions.

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The signals that may be monitored (analogue and/or digital) in typical AlarmMonitoring and Control Systems can include;

· Fibre Optic Transceiver Receive Laser Level (in mW)

· Fibre Optic Transceiver Receive Laser Level Alarm - between a preset high and lowthreshold

· Fibre Optic Transceiver Transmit Laser Level (in mW)

· Fibre Optic Transceiver Transmit Laser Level Alarm - between a preset high and lowthreshold

· RS232 Communication to/from the remote unit

· Downlink Amplifier Operation- between a preset high and low threshold

· Uplink Amplifier Operation- between a preset high and low threshold

· AGC/OLC control voltage (in volts dc)

· Mains Power Supply - OK

· Battery Revert/Charge - Activated

· Power Supply DC voltages (i.e. 15vdc and 28vdc rails)

· Battery DC voltages (i.e. 28vdc)

· Tamper Switch ("door open" on the repeater amplifier enclosure)

· Internal Enclosure temperature (in ºF or ºC)

· Optional temperature measurement (in ºF or ºC) is also available for monitoring anexternal condition (i.e. room temperature, tunnel ambient temperature, etc)

· Optional inputs are also available to monitor external events (i.e. lighting, movement orfire/smoke detection, etc)

· Outputs are also provided to allow the remote control or external equipment (such asbackup lighting, etc)

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Introducing Signal Booster IIMission Critical Reliability for RebroadcastCoverageRFI is pleased to introduce the new Signal BoosterII product range from TX RX Systems Inc. Itprovides Public Safety grade reliability andcoverage in disadvantaged RF locations and suitsthe rigorous requirements of public safety, masstransit and other similar operations-criticalapplications. A totally new compact designfacilitates installation and system optimisation forrock solid operation via a simple man-machineinterface.Imbedded features for ease of use include;

· decoupled test points for signal detection,· menu driven gain settings,· front panel LED monitors for amplifier and

power status,· and an at-a-glance LED bar graph to

indicate relative output of the inbuiltOutput Level Control (OLC).

Additionally, this product offers a unique on-board OLC datalog feature thatarchives a "User Signal Profile" to facilitate optimum systems configuration andperformance.

Output Level Control (OLC) Circuit Monitorsand Controls RF Output Power

· Maintains maximum required output power whilepreventing damage and excessive emission levels

· Easy to read LED bar graph· Unique OLC datalog feature facilitates system

maintenance and optimisation

Fault Monitoring and Alarming Essential forMaintaining Reliable Communications

· Control system continuously monitors parametersincluding voltage, current, temperature and OLC activity

· LEDs on each module quickly annunciate source of fault· Fault triggers annunciation on panel and alarm contact

state change

Microprocessor Controlled System ensuresreliable operation and flexible configuration

· Simple, back-lit LCD and switch control· Current, voltage and temperature monitoring· Fault monitoring and alarm annunciation

Card Cage Modularity· Easy "slide-in" replacement process· Facilitates ease of service and system configuration

Decoupled RF Test Points for SimplifiedService

· Allow fast system measurements in both uplink anddownlink paths monitor signals for performanceoptimisation

· Integrated design facilitates non-intrusive measurements

High Performance Bandpass Filters· Configured to customer requirements and addresses

many specifications requiring custom passbands· Models available with passbands from below 3MHz to

over 18MHz for full band coverage

Secure non-vented NEMA enclosures suitablefor Extreme Indoor or Outdoor Environments

Programmable Gain Setting· Programmable attenuation 0-30dB in 0.5dB steps· Ease of initial configuration via front panel· When used in conjunction with OLC Datalog, simplifies

post-installation adjustments

Various Mains and Battery BackupConfigurations Available

For more information on this exciting new product range please contact your nearest sales office

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SummaryInstead of restricting the system designer or network operator to a limited selectionof model configurations, RFI offers enormous flexibility in the choice of gain,AGC/OLC control, output powers, frequency bands, bandwidth, passbandseparation, AC/DC supply voltages (with or without battery backup), power andalarm monitoring, and cabinet mounting styles.RFI's in-house engineering design and manufacturing capability and our in-depthknowledge of filter and system design allows us to provide unique or customisedsolutions for any application - no matter how small or large, simple or complex.Most applications will determine a customised solution but with our broad productrange and supporting engineering services we are able to design, assemble andcommission rebroadcast equipment quickly and easily - no matter what therequirement.Included in this catalogue is a sampling of some product technologies andconfigurations we can supply but we encourage you to contact us to discuss yourown application requirements so that we can supply the solution best suited toyour needs.

RebroadcastSystems



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SystemProducts

RFI can supply a diverse range of products to ensure that you are providedwith the broadest possible selection of components from which to completeyour multicoupling system design requirements.

A sampling of our System products is represented within this catalogue.Within this range, many models can be supplied with characteristicstailored to conform with specific design parameters. Therefore, we cannotfully represent these many variants within these pages.

If you cannot find what you need within these pages, we encourage you tocontact your nearest RFI sales office for further assistance.

Crossband CouplersHybrid / Directional CouplersIsolators / CirculatorsLow Pass / Harmonic FiltersPower Dividers / SplittersRF Loads / Terminations / AttenuatorsMiscellaneous System Products

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Crossband Couplers

System Products

Crossband couplers allow the combining of multiple frequency bandsonto shared coaxial and radiating cables and multi-band antennas.Models are available for specialised transmit and receive applicationsacross the frequency range 0.5 - 2500MHz and beyond. Cascadingunits can allow any number of different frequency bands to becombined together.In addition, units are available for indoor, outdoor and tower mountingrequirements thereby providing for the rationalisation of feeder cableusage - reducing cabling costs and tower loadings.


• Combine multiple frequency bands for DistributedAntenna and Radiating Cable systems

• Reduce cabling and tower loading

• Add new frequency bands to existing installations

• Indoor, outdoor and tower-mount versions available

A crossband coupler is typically a three port device - usually known as low-pass, high-pass and combinedrespectively. Models are available in a variety of mounting styles and DC-Pass or DC-Blocking configurationsfor use with bi-directional amplifiers and tower mount preamplifiers.Tower mount (outdoor) models shown consist of the indoor unit less rack mount bracket, in a weatherprooffibreglass housing that is sealed with silicon adhesive.Indoor units may also be packaged in suitable custom weatherproof housings to create alternate tower mountversions.

Typical models are shown.Other models are available upon request. Please contact your nearest RFI sales office for further details.

Outdoor Unit

Indoor Unit



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Typical Applications - Combining Multiple Frequency Bands onto a radiating cable

Radiating Cable Through Tunnel

Feeder

Splitter

AM RebroadcastEquipment

UHF CommsSystem

FM RebroadcastEquipment

Crossband Couplers

System Products

Typical Applications - Combining Multiple Frequency Bands onto a radiating cable

4Channel

UHFTrunking

VHFPaging

RadiatingCable

on eachfloor ofbuilding

Single AntennaMulticoupler

Example: Combining an AMand FM Radio RebroadcastSystem with a UHF two-wayOperations Channel for aroad tunnel- single radiating coaxreduces cable, hardware,and installation costs

Example: Combining a VHFPaging and a multi-channelUHF Voice, system for anin-building application- single coax reduces cable,hardware, and rigging costs- ensures all systems haveidentical coverage potential

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Typical Applications - Combining Multiple Frequency Bands onto a shared coaxial cable

VHF UHF 800MHz

Feeder

VHF UHF 800MHz

VHFOmni

Feeder

Tx

Rx

Tx

RxDuplexer

Base Station Link

Duplexer

Tower MountCrossband Coupler

Crossband Couplers

System Products

Example : Combining VHFand UHF/800MHz RxSystems using Tower MountAmps- single coax reduces cable,hardware, and installationcosts- reduces tower loading

Example : Combining a VHFBase with Omni antennawith a UHF directional link- ideal for long cable runs ordifficult installations- reduces tower loading andinstallation time- single coax reduces cable,hardware, and installationcosts

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Crossband Couplers

System Products

Electrical

Mechanical

Model Frequency BandsCoupled

(MHz)

Typ. Loss(dB)

Isolation(dB)

Power Rating(watts) NotesWeather Proof

Tower Mount Indoor Mount

SP0000-1102-85 SP0000-1101-31 400 - 540 MHz800 - 960MHz

0.200.20

>40dB

750500 -

SP0000-1104-85 SP0000-1101-31 400 - 540 MHz800 - 960MHz

0.300.50 Rx Only 1.

SP0000-1106-85 SP0000-1103-31 400 - 540 MHz800 - 960MHz

0.300.50

250Rx Only 2.

SP0000-1108-85 SP0000-1105-31 25 - 175 MHz400 - 960MHz

0.250.25

350350 -

SP0000-1110-85 SP0000-1107-31 25 - 175 MHz400 - 960MHz

0.350.50 Rx Only 3.

SP0000-1112-85 - 400 - 540 MHz800 - 960MHz

0.350.35 Rx Only 4.

- SP0000-1111-31 0 - 90MHz140 - 540MHz

0.500.50

200200 -

- SP0000-1113-31 0 - 175MHz450 - 2000MHz

0.500.50 >50dB 200

200 1.

- SP0000-1115-31 0 - 1000MHz1700 - 2200MHz

0.300.50 >50dB 200

200 1.

- SP0000-1117-31 0.5 - 1.6MHz60 - 1000MHz

0.500.60 >30dB 100

100 5.

Model Dimensions(HxWxL approx)

Temp. Range°C / °F VSWR Impedance Weight Connectors

SP0000-1101-31SP0000-1103-31SP0000-1105-31SP0000-1107-31

50 x 482 x 75 mm2 x 19 x 3 in.

-40 to +70° C-40 to +160° F

1.25:1

50 Ohms

1.8 kgs4.0 lbs

N female(others on request)

SP0000-1102-85SP0000-1104-85SP0000-1106-85SP0000-1108-85SP0000-1110-85SP0000-1112-85

89 x 152 x 350 mm3.5 x 6 x 13.75 in.

-40 to +70° C-40 to +160° F

3.2 kgs7.0 lbs

SP0000-1111-31SP0000-1113-31SP0000-1115-31

31 x 110 x 132 mm1.25 x 4.3 x 5.2 in.

-20 to +55° C-4 to +130° F

1.3:1 1.0 kg2.2 lbs

SP0000-1117-31 165 x 135 x 110 mm6.5 x 5.3 x 4.5 in.

-30 to +65° C-22 to +150° F

Notes:1. Passes DC power between all three terminals for operating separate tower mount receive

systems. Warning: Do not connect a DC grounded antenna directly to this model if DCpower is being passed.

2. DC power will only pass between the combined port and the 800-960MHz port for operating a800MHz tower mount receive system.

3. DC power passes between the combined port and the 400-540MHz port, but is blocked fromthe 25-175MHz port to the combined port.

4. DC power passes between the combined port and the 400-540MHz port, but is blocked fromthe 800-960MHz port to the combined port.

5. The 0.5-1.6MHz port is coupled onto outside conductor of combined port and 60-1000MHzport is coupled onto centre conductor of combined port. This model is used for combiningAM radio rebroadcast with FM/VHF/UHF/etc onto a single cable.

Please consult dedicated product briefs for detailed specifications

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Hybrid/Directional Couplers allow signals to be combined or sampledat preset values. Models are available from small low power units tohigh power versions, across the frequency range 50-2500MHz.They are available with preset coupling/sampling values of between 3to 30dB. Single or dual port versions are available, and broadbandmodels are also available to provide flexibility in designs catering formulti-band signal distribution.Our range of Hybrid/Directional Couplers is suitable for multicouplingand distributed antenna and radiating cable systems, in addition totesting and other laboratory purposes.

• Suitable for analogue and digital technologies

• Ideal for frequency agile transmitter combining

• Sampling and distributing signals in distributedantenna and radiating cable systems

• Sampling signals at controlled levels in laboratoryand testing applications

Directional Coupler

The Hybrid/Directional Coupler is a multi-port device - usually known as input, output, and decoupled portsrespectively. The same device may be used to combine signals (when it is commonly referred to as a HybridCoupler), or to sample a signal (when is commonly referred to as a Directional Coupler). Fundamentally it is thesame device, with only the application changing.

When used as a Hybrid Coupler, the coupler allows multiple signals to be combined together on to a commonport. Due to its design, any frequencies within the coupler's designed passband may be combined together. Thisis particularly useful to combine two or more very closely spaced frequencies, allowing channels to be combinedthat would be difficult or impractical to combine using a cavity filter design approach.

As a Directional Coupler, the coupler allows a preset sampling of the input power level to be taken at thedecoupled port. This allows the matching of signal levels within a design to facilitate the "balanced" distributionof signals within a distributed antenna or radiating cabling system. In testing environments, directional couplersallow reduced power samplings of the input signal to be provided to test and measuring equipment at safe levelsto minimise the risk of overload or damage to valuable test equipment.

Some models are available as either single or dual coupled port devices. Low and high power versions areavailable, as well as broadband models for multi-band distribution requirements.

Models with different coupling values can be utilised within a design to compensate for the differing attenuationor propagation characteristics present at different locations within the design.

Typical models are shown.Other models are available upon request.Please contact your nearest RFI sales office for further details.

Hybrid Coupler

Hybrid/Directional Couplers

System Products

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System Products

Typical Applications - Progressive and Branching Transmitter Combining

Channels L1 L2 L3 L4 L5

2 3.0 3.0 - - -

3 4.8 4.8 4.8 - -

4 6.0 6.0 6.0 6.0 -

5 7.0 7.0 7.0 7.0 7.0

Channels L1 L2 L3 L4 L5

2 3.0 3.0 - - -

3 6.0 6.0 6.0 - -

4 6.0 6.0 6.0 6.0 -

5 9.0 9.0 9.0 9.0 9.0

-3 dB

-3 dB

-3 dB HYBRID -4.8 dB HYBRID -6 dB HYBRID -7 dB HYBRID

TX 2INPUT

TX 3INPUT

TX 4INPUT

TX 5INPUT

TX 1INPUT

-4.8 dB

-1.8 dB

-6 dB

-1.2dB

-7dB

-1.0 dBOUTPUT

TX 2INPUT

TX 3INPUT

TX 1INPUT

TX 4INPUT

OUTPUT

-3 dB HYBRID -3 dB HYBRID

-3 dB HYBRID

Per-Channel Insertion Losses

Per-Channel Insertion Losses

Example 2 : Combining multiple transmitters in a "branching" combiner

The table at right shows the insertion loss that can beexpected in a branching hybrid combiner design. In somemulti-channel configurations (i.e. 3 or 5 channel), theinsertions losses will be higher than in a equivalentprogressive design as shown above

The table at right shows the insertion loss that can beexpected in a progressive hybrid combiner design. In a multi-channel system (Channels 2 to 5), the insertion loss for eachchannel (L1 to L5 is shown). Utilising a different modelcoupler in each channel position allows equal insertionlosses to be designed into the system at optimum values perchannel.

Please note that for illustration purposes, the isolators, harmonic filters, and output filters that may berequired in a specific design are not shown on the transmitter combining examples. As hybrid couplersdo not provide any transmitter carrier noise suppression, an output filter is generally required.

Example 1 : Combining multiple transmitters in a "progressive" combiner

In a branching combiner design, some ports may need to be terminated and remain unused to ensurethat all channels have the same insertion loss in the system. Alternatively, the individual channel'stransmitters may have their output power adjusted to achieve the same result if an unbalancedarchitecture is utilised.The advantage of the branching design is that all couplers are of the same coupling rating, therebyassisting spares holdings and ongoing system support. The disadvantage of a branching design is that per-channel insertion losses are often higher than indesigns using progressive techniques.

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Typical Application - Using Directional Coupler to evenly distribute signals in a mine.

TUNNEL F

TUNNEL E

TUNNEL D

DIRECTIONAL COUPLER

TUNNEL C

DIRECTIONAL COUPLER

DIRECTIONAL COUPLER

TUNNEL A

TUNNEL B

SYSTEMEQUIPMENT

2-WAYSPLITTER


System Products

A different model directional coupler may be used in each position in the above example to equalise thesignal attenuators within the design to provide a more balanced performance throughout the mine.Using directional couplers instead of fixed power dividers provides the flexibility to branch signals atspecific ratios to better meet design values and more accurately equalise overall design performance.

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System Products

Model Frequency RangeSampled (MHz)

Coupling Level(dB)

Port-PortIsolation

Return Loss(VSWR)

Power Rating(watts) Ports Notes

SP0608-2103-11 66-88 -3 >25db

20db(1.22:1)

300 Dual 1.

SP1317-2110-11

132-174

-10

>30db 10 Single 2.

SP1317-2115-11 -15

SP1317-2120-11 -20

SP1317-2130-11 -30

SP1317-2150-11 -50

SP1317-2203-11 -3

>25db 300 Dual 1.

SP1317-2204-11 -4.8

SP1317-2206-11 -6

SP1317-2207-11 -7

SP1317-2210-11 -10

SP1447-2115-11 148-174 / 450-470 -15

>30db 10 Single 2.

SP2225-2210-11

225-250

-10

SP2225-2215-11 -15

SP2225-2220-11 -20

SP2225-2230-11 -30

SP2225-2250-11 -50


Coupling Level(dB)

Port-PortIsolation

Return Loss(VSWR)


SP4054-2110-11

400-540

-10

>30db

20db(1.22:1)

10 Single 2.

SP4054-2115-11 -15

SP4054-2120-11 -20

SP4054-2130-11 -30

SP4054-2150-11 -50

SP4054-2203-11 -3

>25db 300 Dual 1.

SP4054-2204-11 -4.8

SP4054-2206-11 -6

SP4054-2207-11 -7

SP4054-2210-11 -10

SP4054-2215-11 -15

SP4054-2220-11 -20

SP4054-2230-11 -30

SP4054-2205-11 -4 to -10 adj. - 125 Single 2.

SP0554-2210-1150-540 -10 to -19 >20db (1.35:1)

100 Dual 1.

SP0554-2111-11 25 Single 2.

Electrical

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Notes:1. Units are supplied without a termination on the coupling termination port. A load should be

ordered to match the power rating of operation using the following recommended formula;(Coupling Loss of Input Power) x 2i.e. 10db of 100watts = 10watts x 2 = 20watts minimum load

2. Tuned within band for a 3% operating bandwidth. Coupling level adjustment range variesslightly across band.

Please consult dedicated product briefs for detailed specifications.


System Products

Electrical


Coupling Level(dB)

Port-PortIsolation

Return Loss(VSWR)


SP8090-2203-31 800-900 -3.2 20 - 30db (1.06:1) 850 Dual 1.

SP8010-2110-11

800-1000

-10

>30db

20db(1.22:1)

10 Single 2.

SP8010-2115-11 -15

SP8010-2120-11 -20

SP8010-2130-11 -30

SP8010-2150-11 -50

SP8010-2203-11 -3

>25db 300 Dual 2.

SP8010-2204-11 -4.8

SP8010-2206-11 -6

SP8010-2207-11 -7

SP8010-2210-11 -10

SP8010-2215-11 -15

SP8010-2220-11 -20

SP8010-2230-11 -30

SP8025-2203-11

800-2500

-3 >18db

20db(1.22:1)

100 Dual 1.

SP8025-2106-11 -6

>25dB 350 Dual 1.

SP8025-2110-11 -10

SP8025-2115-11 -15

SP8025-2120-11 -20

SP8025-2130-11 -30

SP1310-2203-11

132-1000

-3

SP1310-2204-11 -4.8

SP1310-2206-11 -6

SP1310-2207-11 -7

SP1310-2210-11 -10

SP1310-2230-11 -30

www.rfi.com.au149


System Products

Model Dimensions (LxWxH) Temp. Range Weight kg/lb Connectors

SP0608-2103-11 460 x 64 x 6018.1 x 2.5 x 2.5

-30 to +60° C-22 to +140° F

1.3 / 2.9

N female

SP1317-2103-11

SP1317-2104-11

435 x 64 x 6017.1 x 2.5 x 2.4

SP1317-2106-11

SP1317-2107-11

SP1317-2110-11

SP1447-2115-11

90 x 64 x 603.5 x 3 x 10.75

Contact RFI

SP4054-2103-11

0.7 / 1.5

SP4054-2104-11

SP4054-2106-11

SP4054-2107-11

SP4054-2110-11

SP4054-2115-11

273 x 89 x 753.54 x 2.5 x 2.4

Contact RFISP4054-2120-11

SP4054-2130-11

SP4054-2105-11

0.6 / 1.3

SP0554-2110-11

SP0554-2111-11

SP8010-2103-11

128 x 64 x 605 x 2.5 x 2.4

SP8010-2104-11

SP8010-2106-11

SP8010-2107-11

SP8010-2110-11

SP8010-2115-11

SP8010-2120-11

20 x 53 x 132 mm0.8 x 2.1 x 5.2 in

SP8010-2130-11

SP8025-2103-11

0.5 / 1.1

N female

SP8025-2106-11

N female(7/16 DIN on request)

SP8025-2110-11

SP8025-2115-11

SP8025-2120-11

SP8025-2130-11

SP1310-2203-11

470 x 64 x 64 mm18.5 x 2.5 x 2.5 in 1.3 / 2.9 N female

SP1310-2204-11

SP1310-2206-11

SP1310-2207-11

SP1310-2210-11

SP1310-2230-11

Mechanical

www.rfi.com.au150

Isolators/CirculatorsSystem Products

Circulators allow the directional control of signal paths betweenrespective ports of the device. In particular configurations with oneport terminated into a dummy load, a Circulator is also known as anIsolator.Two or more units may be cascaded in a design to enhanceperformance characteristics. Models are available for applicationsacross the frequency range 50-2500MHz.


• Isolating and protecting transmitter outputs from highVSWR

• Separating transmit and receive signal paths insimplex multicoupling applications

• Controlling the direction of signal flow in somecombining applications

Isolators

Circulators

A Circulator is typically a three port device that allows signals to flow between two adjacent ports, but in only onedirection. This feature can be particularly useful in isolating signals from each other in particular applications.When one port is terminated into a dummy load, a Circulator can be used to isolate a transmitter from reversepower created by a mismatched termination. In this application a Circulator is known as an Isolator, and preventsreturned signals caused by the high VSWR from being returned to the transmitter power amplifier, where it canmix with other signals causing intermodulation products and possible interference.Models are available in different frequency bands and with different power ratings to suit a variety of applications.

Extra ReadingFor some additional information on the use of Isolators and Circulators, please read the following SeminarSubjects papers - An Elementary Introduction to Ferrite Isolators, Circulators and RF Loads.This document can be found on our web site, or contact us to organise a copy to be sent out to you.

Typical models are shown. Other models are available upon request. Please contact your nearest RFI sales office for further details.

www.rfi.com.au151

Isolators/Circulators

System Products

Electrical

Dual and triple circulators may be created by cascading multiple single models. Please consult dedicated product briefs for detailed specifications.Other bands available on request

Model Frequency BandsCoupled (MHz)

Typ. Loss(dB) Typ. Isolation Return Loss/

VSWRPower Rating

(watts) Imped. Load Rating

Single Circulators

<1.22:1 50 Ohms

SP0608-3100-11 66-88 0.30 35dB 150

None fitted

SP1013-3100-11 108-136 0.30 35dB 150SP1317-3100-11 132-174 0.30 35dB 150SP2225-3100-11 220-250 0.30 35dB 150SP3336-3100-11 330-360 0.30 35dB 150SP3640-3100-11 360-400 0.30 35dB 150SP4044-3100-11 400-440 0.30 35dB 150SP4448-3100-11 440-480 0.30 35dB 150SP4852-3100-11 480-520 0.30 35dB 150SP5256-3100-11 520-560 0.30 35dB 150SP8287-3100-11 820-870 0.25 35dB 100SP8792-3100-11 870-920 0.25 35dB 100SP9296-3100-11 920-960 0.25 35dB 100Single IsolatorsSP0608-3105-11 66-88 0.30 35dB 150

250WIntegral

SP1013-3105-11 108-136 0.30 35dB 150SP1317-3115-11 132-174 0.30 35dB 150SP2225-3105-11 220-250 0.30 35dB 150SP3336-3115-11 330-370 0.30 35dB 150SP3640-3115-11 360-400 0.30 35dB 150SP4044-3115-11 400-440 0.30 35dB 150SP4448-3115-11 440-480 0.30 35dB 150SP4852-3115-11 480-520 0.30 35dB 150SP5256-3115-11 520-560 0.30 35dB 150SP8287-3115-11 820-870 0.25 35dB 100SP8792-3115-11 870-920 0.25 35dB 100SP9296-3115-11 920-960 0.25 35dB 100Dual IsolatorsSP0608-3205-11 66-88 0.60 70dB 150

250WIntegral

SP1013-3205-11 108-136 0.60 70dB 150SP1317-3215-11 132-174 0.60 70dB 150SP2225-3205-11 220-250 0.60 70dB 150SP3336-3215-11 330-360 0.60 70dB 150SP3640-3215-11 360-400 0.60 70dB 150SP4044-3215-11 400-440 0.60 70dB 150SP4448-3215-11 440-480 0.60 70dB 150SP4852-3215-11 480-520 0.60 70dB 150SP5256-3215-11 520-560 0.60 70dB 150SP8287-3215-11 820-870 0.50 70dB 100SP8792-3215-11 870-920 0.50 70dB 100SP9296-3215-11 920-960 0.50 70dB 100

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Isolators/Circulators

System Products

Mechanical



Model Dimensions (HxWxL mm/inches approx) Temp. Range Weight kg/lb Connectors

Single Circulators

-40 to +70° C-40 to +160° F

N female(Input / Output)

SMA Female(Sampling Ports)

All Models 43 / 1.7 115 / 4.5 110 / 4.33 0.98 / 2.15

Single Isolators

All Models 43 / 1.7 115 / 4.5 110 / 4.33 0.98 / 2.15

Dual Isolators

All Models 43 / 1.7 176 / 6.93 110 / 4.33 1.65 / 3.63

www.rfi.com.au153

Low Pass/Harmonic Filters

System Products

Low Pass and Harmonic filters are used to control unwantedcomponents of a signal. Models are available in a range offrequencies and response styles across the frequency range 60-1000MHz.Our range of Low Pass and Harmonic filters is ideally suited formulticoupling, distributed antenna and radiating cable systems, testingand other laboratory purposes.


• Reduce harmonic signal levels from non-lineardevices

• Suppress unwanted or interfering signals

• Controlling the direction of signal flow in somecombining applications

Harmonic Filters

RFI filters are especially designed to assist in the prevention and suppression of unwanted signals inmulticoupling systems, at frequencies from 60MHz to 1000MHz.In particular, non-linear devices such as RF Power Amplifiers, circulators and hybrid couplers can producesignificant amounts of harmonic power. These harmonics can contribute to the generation of third-orderintermodulation products when passed, and then mixed, with other signals.For this reason, either a low pass, harmonic or cavity filter should always be inserted between the non-lineardevice and the rest of the multicoupling or antenna systemIn addition, notch style filters may be more appropriate to reduce strong signals close to wanted signals inmulticoupling designs or to allow test equipment to safely display such signals during measurement or fault-finding activities.


www.rfi.com.au154

Low Pass/Harmonic Filters

System Products

Electrical

Mechanical

ModelCarrier

Frequency(MHz)

Sections 2nd HarmonicAttenuation Style Insertion Loss Return Loss/

VSWR Power Rating Imped.

SP1317-1501-11 132-174

Single >30dB

Notch 0.02dB >20db / 1.22:1 600 watts 50 Ohms

SP4054-1503-11 400-540

SP8010-1505-11 800-960

SP1317-1507-11 132-174

Double >60dBSP4054-1509-11 400-540

SP8010-1511-11 800-960

Model Dimensions mm/in Temp. Range Weight kg/lbs Finish Connectors

SP1317-1501-11

60 x 75 x 482.4 x 3 x 1.9

-30 to +55 deg C.-22 to +140 deg F. 0.13 / 0.3 Passivated aluminium N male (input)

N female (output)

SP4054-1503-11

SP8010-1505-11

SP1317-1507-11

SP4054-1509-11

SP8010-1511-11



www.rfi.com.au155

Power Dividers/Splitters

System Products

Power Dividers (Splitters) allow signals to be evenly distributed acrossseveral paths. In addition, they can be used as a combining device insome applications.Models are available in both low power units and high power versions,across the frequencies from below 10MHz to 5.8GHz.They are available in configurations from 2-way to 16-way, andbroadband models are also available to provide flexibility in designscatering for multi-band signal distribution.Our range of Power Dividers/Splitters is suitable for multicoupling anddistributed antenna and radiating cable systems, in addition to testingand other laboratory purposes.


• Low and high power versions available

• Distribute or combine signals in systems and testingapplications

• Reduce signals to designed levels

High Power Model

Low Power Model

The Power Divider/Splitter is a multi-port device - usually known as input, and output (n) ports respectively. Thesame device may be used to divide signals evenly across multiple paths or to combine signals, when it iscommonly referred to as a Passive Combiner.Fundamentally it is the same device with only the application changing.When used as a Power Divider/Splitter, the device allows a signal to be evenly distributed across multiple paths.Due to its design, the insertion loss in each of the paths will be identical.As a Passive Combiner, the device is used in "reverse" with multiple paths being combined into a single port.This combining approach may be used in certain applications where the resultant isolation of the combinedsignals can be externally controlled or where the need for higher isolation values may not be relevant. Due toits design, the loss in each of the combined paths will be identical.In testing environments, these devices allow signals to be divided and then routed to multiple locations, orcombined from multiple sources to a common output - as per testing requirements.Low and high power versions are available, as well as broadband models for multi-band distributionrequirements.


www.rfi.com.au156

Power Dividers/Splitters

System Products

Electrical

Mechanical

Model Frequency (MHz) Paths Insertion Loss Return Loss(VSWR)

Power Rating(Watts) Imped.

SP0154-5102-11 5-540MHz 2 <3.8db 14dB(1.5:1) 125

50 Ohms

SP0154-5202-11 5-540MHz 2 <3.8db 14dB(1.5:1) Rx Only

SP0154-5204-11 5-540MHz 4 <6.5db 14dB(1.5:1) Rx Only

SP1317-5102-11132-174MHz

2 <3.2db 14dB(1.5:1) 800

SP1317-5104-11 4 <6.5db 14dB(1.5:1) 1000

SP4054-5102-11

400-540

2 <3.5db 20dB(1.2:1) 500

SP4054-5104-11 4 <6.4db 23dB(1.5:1) 1000

SP4054-5103-11 3 <5db 20dB(1.2:1)over 6% of BW 600

SP8010-5202-11

800-1000

2 <3.8db 14dB(1.5:1) Rx Only

SP8010-5204-11 4 <6.5db 14dB(1.5:1) Rx Only

SP8010-5102-11 2 <3.2db 20dB(1.2:1) 500

SP8010-5103-11 3 <5.1db 20dB(1.2:1) 500

SP8025-5102-11

800-2500

2 <3.5db 14dB(1.5:1) 200

SP8025-5103-11 3 <5.5db 14dB(1.5:1) 200

SP8025-5104-11 4 <7.0db 14dB(1.5:1) 200

Model Dimensions mm/in Temp. Range Weight kg/lbs Connectors

SP0154-5102-11 48 x 25 x 951.9 x 1 x 3.75

-30 to +70 C-22 to +160 F

0.47 / 1.0

N female

SP0154-5202-11 0.2 / 0.46

SP0154-5204-11 95 x 25 x 1083.75 x 1 x 4.25 0.4 / 0.88

SP1317-5102-11 41 x 110 x 1301.6 x 4.25 x 5.1 0.47 / 1.0

SP1317-5104-11 41 x 270 x 1301.6 x 10.6 x 5.1 1.0 / 2.2

SP4054-5102-11 41 x 110 x 1301.6 x 4.25 x 5.1 0.47 / 1.0

SP4054-5104-11 41 x 270 x 1301.6 x 10.6 x 5.1 1.0 / 2.2

SP4054-5103-11 41 x 220 x 1301.6 x 8.6 x 5.1 0.65 / 1.43

SP8010-5202-11 48 x 25 x 951.9 x 1 x 3.75 0.21 / 0.46

SP8010-5204-11 95 x 25 x 1083.75 x 1 x 4.25 0.4 / 0.88

SP8010-5102-11 41 x 110 x 1301.6 x 4.25 x 5.1 0.47 / 1.0

SP8010-5103-11 41 x 220 x 1301.6 x 8.6 x 5.1 0.65 / 1.43

SP8025-5102-1123 x 50 x 1101 x 2 x 4.25 0.3 / 0.6 N female

(7/16 DIN on request)SP8025-5103-11

SP8025-5104-11

Notes: Please consult dedicated product briefs for detailed specifications.

www.rfi.com.au157

RF Loads, Terminations and Attenuators

System Products

RF Loads and Terminations are used to correctly terminate coaxialcables, multicoupling devices and test equipment.RF Attenuators are used to reduce signals to a design level. They arealso used to reduce high powered signals to lower levels to preventoverload or damage to other devices or test equipment.Models are available in a range of power handling ratings andconnector styles across the frequency range DC - 2500MHz.Our range of RF Loads, Terminations and Attenuators are ideallysuited for multicoupling, distributed antenna and radiating cablesystems, testing and other laboratory purposes.

• Termination of unused ports on multicouplingdevices

• General purpose termination or attenuation ofmulticoupling devices, cables and other systemscomponents

• Suited to test equipment applications

25W Load

100W Load

RFI supplies a range of natural convection, air cooled dry RF Loads, Terminations and Attenuators.RF Terminations are designed as general purpose, low power terminations to be used to correctly terminateunused ports on devices such as receiver multicouplers, etc.RF Loads are especially designed as heavy duty, precision 50ohm terminations for coaxial cables andmulticoupling devices, with models available to suit requirements at various input power ratings and frequenciesfrom DC - 2500MHz.Many of our RF Loads have power density factors (the ratio of rated power to heatsink surface area) in the range0.54 to 0.28watts/in², in some cases three to six times lower than competitive loads of similar power ratings.They use microwave grade, thin film, pyrolytic carbon resistors that exhibit excellent power handling capabilityand temperature cycling characteristics, as well as low noise and low temperature coefficients.RF Attenuators are designed as general purpose attenuators to reduce signals to required levels. They aretypically used in applications such as on the input of preamplifiers, test equipment, or as part of systems designs(such as bi-directional amplifiers) to prevent overload, control gain or to otherwise maintain signals levels withindesired limits. Our RF Loads and Attenuators have excellent return loss over their entire operating range. They are thereforeideal for use in laboratory and field-testing applications for connection to wattmeters and other test equipment.

Typical models are shown.Other models are available upon request.Please contact your nearest RFI sales office for further details.

www.rfi.com.au158

Electrical

Mechanical

Model Frequency (MHz) Return Loss/ VSWR Power Rating(Watts) Imped.

SP0000-6005-11

DC-1000>30dB / 1.05:1@ 1-1000MHz

5

50 Ohms

SP0000-6025-11 25

SP0000-6060-11 60

SP0000-6100-11 100

SP0000-6250-11 250

SP0000-6001-12

DC-2400

>26dB / 1.1 :1@ 1-1000MHz

>20dB / 1.2:1@ 1-2200MHz

1

SP0000-6005-12 5

SP0000-6010-12 10

SP0000-6015-12 15

SP0000-6025-12 25

SP0000-6060-12 60

SP0000-6100-12 100

SP0000-6150-12 150

Model Dimensions(mm/inches) Temp. Range Weight kg/lbs Finish Connectors

SP0000-6005-11 33H x 38 ∅1.3H x1.5

-30 to +55 deg C-22 to +140 deg F

0.085 / 0.18

Gold passivatedaluminium N male

0.275 / 0.6

0.5 / 1.1

SP0000-6025-11 129H x 38 ∅5H x 1.5 0.975 / 1.3

SP0000-6060-11 160L x 99W x41H 6.3L x 3.9W x 1.6H

1.8 / 3.95SP0000-6100-11 160L x 99W x74H

6.3L x 3.9W x 2.9H

SP0000-6250-11

188L x 203W x109H7.4L x 8W x 4.3H

Contact RFI

SP0000-6001-12

Black AnodisedAluminium

N male(others on request)

SP0000-6005-12

SP0000-6010-12

SP0000-6015-12

SP0000-6025-12 110L x 38W x 38H4.3L x 1.5W x 1.5H

SP0000-6060-12120L x 51W x 51H

4.7L x 2W x 2HSP0000-6100-12

SP0000-6150-12

RF Loads

RF Loads

System Products


www.rfi.com.au159

RF Terminations

System Products

Electrical

Mechanical

Model Frequency (MHz) Return Loss / VSWR Power Rating (watts) Impedance

SP0000-6001-11DC-1000 30dB / 1.05:1

0.5 (Rx Only)50 Ohms

SP0000-6002-11 0.5 (Rx Only)

SP0000-6003-11 VHF/UHFN/A N/A T-Pass® Short Circuit

SP0000-6004-11 800MHz

Model Dimensions Temp. Range Weight (gr/oz) Finish Connectors

SP0000-6001-11 BNC male ConnectorHousing

-30 to +60°C-22 to +140°F.

9 / 0.4

As perconnector

BNC male

SP0000-6002-11

N male ConnectorHousing

29 / 1.2

N maleSP0000-6003-11 29 / 1.2

SP0000-6004-11 39 / 1.6


RF Terminations



SP0000-6001-11 SP0000-6002-11 SP0000-6003-11 SP0000-6004-11

www.rfi.com.au

RF Attenuators

160

System Products

ElectricalModel Frequency (MHz) Attenuation (dB) Power Rating Return Loss /

VSWR Imped. Notes

SP0000-7015-00DC-2500

0 - 15 switched

Rx Only

20dB / 1.22:1typical 50 Ohms

In 1dB steps

SP0000-7030-00 0 - 30 switched In 2dB steps

SP0000-7014-00 132-1000 3-14 (typ) Variable

SP0000-7103-00

DC-1000

3

0.5 watts

Notes1, 2.

SP0000-7106-00 6

SP0000-7110-00 10

SP0000-7120-00 20

SP0000-7303-02

DC-2500

3

5 wattsSP0000-7306-02 6

SP0000-7310-02 10

SP0000-7320-02 20

SP0000-7403-02 3

10 wattsSP0000-7406-02 6

SP0000-7410-02 10

SP0000-7420-02 20

SP0000-7603-02 3

50 wattsSP0000-7606-02 6

SP0000-7610-02 10

SP0000-7620-02 20

SP0000-7803-02 3

100 wattsSP0000-7806-02 6

SP0000-7810-02 10

SP0000-7820-02 20

RF Attenuators

Notes: 1. Other power and attenuation ratings and connector types are available upon request.2. Units may be cascaded to create alternative values.Please consult dedicated product briefs for detailed specifications.

SP0000-7103-00 SP0000-7403-02SP0000-7014-00

www.rfi.com.au161

RF Attenuators

System Products

MechanicalModel Dimensions

mm / inchesTemperature

Range Weight (kg/lb) Finish Connectors

SP0000-7015-00Contact RFI

-30 to +55 deg C-22 to +140 deg F.

Contact RFIContact RFI

BNC male/female

SP0000-7030-00

SP0000-7014-00 50L x 60W x 23H2L x 2.3W x 1H 0.066 / 0.15

SP0000-7103-00

36L x 14 Ø1.4L x 0.5 Ø 16 / 0.04 As per connector

SP0000-7106-00

SP0000-7110-00

SP0000-7120-00

SP0000-7303-02

70L x 50W x 32H2.7L x 1.9W x 1.2H

Contact RFI Matt blackAnodised aluminium

N male/female(others on request)

SP0000-7306-02

SP0000-7310-02

SP0000-7320-02

SP0000-7403-02

125L x 36W x 34 H4.9L x 1.4W x 1.3H

SP0000-7406-02

SP0000-7410-02

SP0000-7420-02

SP0000-7603-02

120L x 125W x 41H4.7L x 4.9W x 1.6H

SP0000-7606-02

SP0000-7610-02

SP0000-7620-02

SP0000-7803-02

120L x 125W x 110H4.7L x 4.9W x 4.3H

SP0000-7806-02

SP0000-7810-02

SP0000-7820-02

162

EngineeringServices

RF Industries (RFI) offer an extensive range of research and development,design, manufacturing, installation, commissioning and related engineeringservices to the wireless industry.

We have an extensive in-house capability to support our customers. Wecan offer site layout and construction advice, RF systems' design, sitedocumentation, intermodulation and interference analysis, retuning, siteand multicoupling fault-finding and reconfiguration advice. We also provideadvice on the selection, design and implementation of multicoupling (andassociated antennas, cabling, earthing, lightning protection, etc), and wewill also carry out site visits as part of the above activities.

In particular, we welcome the opportunity to work with consultants, networkoperators, site owners, equipment vendors and end users in the design andspecifying of solutions, tender preparation, quotation responses, installationand commissioning of systems.

Our objective is to provide ourextensive engineering expertise andproduct knowledge, backed by ourdiverse product range andmanufacturing capabilities, to supportour customers in the wireless industry

- across our entire product portfolio.

If you would like to access thesespecialist resources please donot hesitate to contact your localRFI sales office for furtherassistance.

163

RFI offers a range of engineering activities to support our customers, our products,and their use. We are committed to our customers, and we value the contributionwe can make to our customer's business. To this end, we offer the followingsupport services to the wireless industry;RFI already supply all the component families required to constructcommunications sites. This includes antennas and rigging hardware, cables andconnectors and related hardware, earthing and lightning protection equipment,multicoupling and related installation hardware, and power supplies - includingsolar and battery systems.We have over twenty years of experience supplying and supporting some of theworld's leading brands of wireless infrastructure products. Backed up by our ownin-house engineering and manufacturing capabilities, we have an acknowledgedexpertise in the wireless industry. To ensure the successful use of the products we supply, we offer a range of designconsultation services to assist site designers and constructors understand themany facets of the correct choice, installation and use of our products.

Site Layout and Construction AdviceWhen you are designing your communications sites RFI can assist you with;

· the correct choice of antenna type to suit the environmental operatingconditions and network coverage/performance objectives of a particularsite,

· the optimum cable size/type for the intended application, and theassociated hardware recommended for its installation and mounting.

· suitable earthing and/or lightning protection equipment for the proposedinstallation and site locality,

· the selection, design, and implementation of a suitable filtering ormulticoupling solution,

· the identification, selection, dimensioning, design and implementation ofsuitable power systems to cater for the operational, geographical andenvironmental characteristics of the proposed site.

RF Systems DesignWireless systems design can often be a complex task. Successful multicouplingsolutions can require careful consideration of many variables. These include: localfrequency spectrum allocation guidelines, RF congestion, frequency re-use, thepresence of adjacent and co-sited services, antenna location and orientation,equipment and network performance criteria, intermodulation and otherinterference issues, local environmental characteristics and existing RFconditions.RFI design and supply multicoupling solutions that we guarantee to perform.Coupled with our in-depth knowledge and experience in the application of off-the-shelf products is a comprehensive in-house engineering capability in design andcommissioning of custom multicoupling solutions. Our factory's manufacturingcapability allows us to combine the best of our products and services to assemblethe ideal multicoupling solution for each and every customer application - nomatter how simple or complex they may be.

EngineeringServices

164

EngineeringServices

Site DocumentationWhen we supply a multicoupling system to our customers, we incorporate it intoour internal site documentation file register. We maintain this register for the lifeof a system and/or site. We record the system that was supplied, any applicablefrequencies, measured performance results, and any other configurationcharacteristics that have been implemented into the system.Over time, as the system is expanded or reconfigured, we update these recordsto reflect such changes - as and when they are ordered. In this way, we maintainan accurate "snapshot" of each multicoupling system we have supplied to ourcustomers. We refer to these records to assist in the recommendation anddesigning of future system changes. We provide an updated copy of these "as-built" records (along with actual measurement test results from the factory) witheach system addition or change as it is supplied, and many of our customers nowutilise our Site Records as their own reference documentation for their sites.

Intermodulation and Interference AnalysisThe wireless environment is becoming ever more congested. It is increasinglychallenging to introduce and operate frequencies into communicationsenvironments without suffering the effects of some form of interference. At RFI wecan offer in-house engineering support to evaluate the likely interaction betweenactual and/or proposed frequencies on a site. This evaluation assists in theidentification of likely intermodulation or other interference issues, and allows usto incorporate adequate measures into site layout or multicoupling designs toensure such performance-impacting issues are minimised.Our in depth knowledge of the relevant engineering and performance criteria foranalogue and digital technologies across a diverse range of end-use applications,and their interaction across multiple frequency bands, allows us to bring anacknowledged level of expertise to the evaluation of interference probabilities, andthe design and implementation of suitable reduction measures.

RetuningOperational requirements on communications sites often change with time.Sometimes customer's frequencies change or new frequencies need to beincorporated onto the site. This may require window preselectors and othermulticoupling components that are currently in service on the site to be retuned orre-configured. Alternatively, it may be preferred to re-deploy surplus multicouplingto accommodate such change.RFI offer both "return-to-factory" and "on-site" retuning services to meet thevarious site reconfiguration and expansion requirements of our customers.

Site and Multicoupling Fault-finding, Analysis and ReconfigurationOur comprehensive experience and engineering capability across the breadth ofour product range means that we can evaluate problems anywhere on acommunications site. We can draw on the diversity of knowledge and experiencewithin our organisation (and that of our major supplier partners) to provide acomprehensive fault-finding, analysis and re-configuration advice capability to ourcustomers.We can provide assistance over the telephone or email and, if required, we canalso carry out site visits to evaluate specific problem situations. We will preparereports and recommend actions to rectify problems that we identify.For further information on any of these supporting services, please contact yournearest RFI sales office for assistance.

165

MountingHardware

RFI offer a range of mounting hardware and other accessories to supportthe use of our multicoupling products. These items are also used in ourfactory during the assembly of many of our multicoupler products andsystems.This range includes metalwork, mounting brackets, hose clamps, cableassemblies and associated hardware items.The products represented in this catalogue are a sampling of the range ofitems that we can provide. In addition, we design and supply customisedmetalwork to suit unique mounting and operational requirements. Corporate colour schemes and logos can also be added to most metalworkupon request.If you cannot find what you require in these pages, please contact yournearest RFI sales office for further assistance.

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Installation Accessories

Mounting Hardware

The open, volumetrically efficient, arrangement ofthe Peg Rack assembly securely holds up to 23 T-Pass® channel assemblies, allowingunrestricted access to all system parts, tuningadjustments and test points.T-Pass® channel assemblies are attached withstainless steel clamps to four support "pegs" andbecome an integral part of the Peg Rackstructure. Excellent mechanical strength isachieved with a minimum of support members. Atypical Peg Rack is around 75% lighter than a19inch cabinet of equivalent capacity. Thisresults in a large reduction in shipping costs.More than one multicoupler system can beinstalled in one Peg Rack. For this reason weoffer various options and accessories to suit mostlikely mounting configurations. In additionadapter plates are available to provide the correctspacing to facilitate the mounting of standard483mm/19inch rack mountable items (such asreceiver preselectors, etc) into these peg racks.Peg Racks provide a simple and secure mountingfor our expandable cavity multicoupler systems.They are constructed of alodined aluminium -except for the steel gussets, cavity support pegs,and bolts, washers and nuts. Shipment is usuallymade in kit form to reduce freight costs and finalassembly completed on site.Standard configurations are presented butcustom configurations and mounting styles canalso be provided to suit non-standard installationconditions. All kits are supplied withcomprehensive assembly instructions.T-Pass® Peg Racks are also suitable to use tomount our other 168mm (6.625”) and 254mm(10”) cavity-based combiners and systems.

Mounting Style - T-Pass® Peg Rack

T-Pass® Peg Rack



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Installation Accessories

Mounting Hardware

Notes: Dimensions above include overhang of cavity plungers at maximum extension.

Model DescriptionDimensions mm/in

L W H

HW0304-6001-11 Suits up to 15 - 168mm/6.625in VHF 30-40MHz ¼ wave cavities 3355/132 610/24 1660/65.25




HW0608-6003-11 Suits up to 13 - 254mm/10in VHF 66-88MHz ¼ wave cavities 1702/67 610/24 2020/79.5










HW1417-6001-11 Suits up to 15 - 168mm/6.625in VHF 144-174MHz ¼ wave cavities 827/32.5 610/24 1660/65.25








HW3040-6001-11 Suits up to 15 - 168mm/6.625in UHF 300-400MHz ¼ wave cavities 535/21 610/24 1660/65.25

HW3040-6002-11 Suits up to 23 - 168mm/6.625in UHF 300-400MHz ¼ wave cavities 535/21 610/24 2200/86.5

HW3040-6003-11 Suits up to 13 - 254mm/10in UHF 300-400MHz ¼ wave cavities 560/22 610/24 2020/79.5

HW3855-6001-11 Suits up to 15 - 168mm/6.625in UHF 380-550MHz ¼ wave cavities 446/17.5 610/24 1660/65.25

HW3855-6002-11 Suits up to 23 - 168mm/6.625in UHF 380-550MHz ¼ wave cavities 446/17.5 610/24 2200/86.5

HW3855-6003-11 Suits up to 13 - 254mm/10in UHF 380-550MHz ¼ wave cavities 471/18.5 610/24 2020/79.5

HW4053-6001-11 Suits up to 15 - 168mm/6.625in UHF 400-530MHz ¾ wave cavities 827/32.5 610/24 1660/65.25

HW4053-6002-11 Suits up to 23 - 168mm/6.625in UHF 400-530MHz ¾ wave cavities 827/32.5 610/24 2200/86.5

HW4053-6003-11 Suits up to 13 - 254mm/10in UHF 400-530MHz ¾ wave cavities 865/34 610/24 2020/79.5

HW8010-6001-11 Suits up to 15 - 168mm/6.625in 800-1000MHz ¾ wave cavities 230/9 610/24 1660/65.25

HW8010-6002-11 Suits up to 23 - 168mm/6.625in 800-1000MHz ¾ wave cavities 230/9 610/24 2200/86.5

HW0000-6001-11 19 inch Rack Adapter - Converts part of Peg Rack to 5RU mounting (Set of two plates) N/A N/A N/A

T-Pass® Peg Rack

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Cavity Mounting

Mounting Hardware

RFI provides a range of mounting hardware and accessories to mount our cavity filters into standard 483mm(19inch) rack spacing. A range of mounting brackets, adapter plates and associated hardware is available, and in addition RFI willcustom design and manufacture metalwork and enclosures to suit project or product specific cosmetic, mountingand environmental requirements.Metalwork can also be provided in customised colour schemes or with company logos if desired.

• Available to suit all cavity styles and sizes

• Custom design and manufacturing available

• Corporate colours and logo labelling available

HW0000-3021-11 HW0000-3001-11HW0000-3011-11HW0000-3012-11

HW0000-3113-11

Model Description

HW0000-3001-11 483mm (19inch) rack rails to suit up to 4 x 100mm (4inch) cavities (Set of 2)

HW0000-3011-11 3RU 483mm (19inch) anodised front panel - suits 4 x 100mm (4inch) Bandpass style cavities

HW0000-3012-11 3RU 483mm (19inch) anodised front panel - suits 2 x Bandpass and Vari-Notch® style 100mm (4inch) cavities

HW0000-3021-11 Set of 2 side plates to suit above rack rails and 3RU panels. Allows rear flush mount of UHF and 800MHz cavities.

HW0000-3022-11 As per HW0000-3021-11. Allows Rear Flush Mount of 132-400MHz cavities.

Model Description

HW0000-3110-11 3RU Flush front panel (grey powder coated front panel with RFI logo)with bracket and hose clamp to suit 100mm (4”) cavity (cavity ordered separately)

HW0000-3113-11 5RU Flush front panel (grey powder coated front panel with RFI logo)with bracket and hose clamp to suit 168mm (6.625”) cavity (cavity ordered separately)

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HW0000-2432-11 HW0000-2402-11HW0000-2452-11HW0000-2451-11

Cavity Mounting

Mounting Hardware

Model Description

HW0000-2431-11 483mm (19inch) front, centre or rear mount rack bar and hose clamps (Set of 2) - suits 100mm (4inch) cavities

HW0000-2432-11 483mm (19inch) front, centre or rear mount rack bar and hose clamps (Set of 2) - suits 168mm (6.625inch) cavities

HW0000-2441-11 483mm (19inch) centre mount rack bar and hose clamps (Set of 2) - suits 2 x 100mm (4inch) cavities

HW0000-2442-11 483mm (19inch) centre mount rack bar and hose clamps (Set of 2) - suits 4 x 100mm (4inch) cavities

HW0000-2451-11 483mm (19inch) centre mount rack bar and hose clamps (Set of 2) - suits 2 x 168mm (6.625inch) cavities

HW0000-2452-11 483mm (19inch) centre mount rack bar and hose clamps (Set of 2) - suits 4 x 168mm (6.625inch) cavities

HW0000-2461-11 Piggy-back brackets and hose clamps (Set of 2) - suits 100mm (4inch) cavities

HW0000-2462-11 Piggy-back brackets and hose clamps (Set of 2) - suits 168mm (6.625inch) cavities

HW0000-2401-11 10RU flush front panel c/w brackets and hose clamps - suits 1 or 2 x 168mm (6.625inch) cavities (use with piggy-back bracket kits above to expand above initial 2 cavities)

HW0000-2402-11 10RU flush front panel c/w brackets and hose clamps - suits 3 or 4 x 168mm (6.625inch) cavities(use with piggy-back bracket kits above to expand above initial 2 cavities)






HW0000-2422-11 20RU flush front panel c/w brackets and hose clamps - suits 3 or 4 x 168mm (6.625inch) cavitie(use with piggy-back bracket kits above to expand above initial 2 cavities)


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Cavity Mounting

Mounting Hardware

Model DescriptionHW0000-3000-11 General/wall mount bracket for cavities (hose clamp to be ordered separately)

HW0000-3100-11 Front/Rear rail mounting bracket for mounting 1-2 168mm (6.625in) cavities c/w two hoseclamps (qty 2 recommended)

HW0000-3101-11 Centre rail mounting bracket for mounting 1-4 168mm (6.625in) cavities c/w four hoseclamps (qty 2 recommended)

HW0000-3102-11 Piggy-back style mounting bracket for mounting additional 1-2 168mm (6.625in) cavitiesonto above models c/w four hoseclamps (qty 2 recommended)

HW0000-3200-11 Isolator mounting plate to suit Symmetry® Isolator (hose clamp to mount on cavity ordered separately)

HW0000-3201-11 Isolator mounting plate to suit TX RX® Isolator (hose clamp to mount on cavity ordered separately)

Model Description

HW0000-4001-11 Stainless Steel Hose Clamp for 100mm (4inch) cavities (qty 1)



Model Description Dimensions

HW0000-1000-11 Replacement T-Pass® ThruLine Cable -RG214 N male to N male Connectors

Frequency dependent length. Frequencies of channelsabove and below must be provided with order.

HW0000-1002-11 Filter Interconnection Cable - RG214 N male to N male connectors

Preferred length (<1m) should be provided with order,or default 1m length will be supplied.

HW0000-1003-11 Filter Interconnection Cable - RG214 N male to BNC male connectors

HW0000-1004-11 Filter Interconnection Cable - RG214 BNC male to BNC male connectors

HW0000-1102-11 Filter Interconnection Cable - RG142 N male to N male connectors

HW0000-1103-11 Filter Interconnection Cable - RG142 N male to BNC male connectors

HW0000-1104-11 Filter Interconnection Cable - RG142 BNC male to BNC male connectors

Miscellaneous Mounting Hardware

Hose Clamps

Cavity Interconnect Cables

Notes: Many other mounting accessories available to suit all cavity sizes and mounting styles.Please contact your nearest RFI sales office for assistance.

Notes: RFI can make pre-made cables using any cable/connector combination, and in any quantity. RFI provide many integrators and OEMs with pre-made cablesto suit almost any application. Interconnection cables, antenna tails, custom cable assemblies? Please contact your nearest RFI sales office for assistance.

HW0000-3102-11 HW0000-3101-11 HW0000-3000-11 HW0000-3100-11

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483mm (19 inch) Metalwork

Mounting Hardware

HW0000-2012-11

RFI can provide a range of mounting hardware and accessories to suit 483mm (19inch) rack mountingrequirements. A range of industry-standard sized front panels, open cantilever shelves and enclosed boxes is available, and inaddition RFI will custom design and manufacture metalwork and enclosures to suit project or product specificcosmetic, mounting and environmental requirements.Metalwork can also be provided in customised colour schemes or with company logos if desired.

• Industry-standard sizes

• Custom design and manufacturing

• Corporate colours and logo labelling available

Model Description

HW0000-2012-11 1RU Cantilever shelf with flush front panel (grey powder coated front panel with RFI logo) - 200mm/12in. deep




HW0000-2035-11 3RU Cantilever shelf with flush front panel (grey powder coated front panel with RFI logo) - 500mm/19.5in. deep

HW0000-2110-11 1RU Blank flush front panel (grey powder coated front panel with RFI logo)




HW0000-2223-11 2RU Flush front panel vented lid box (grey powder coated front panel with RFI logo) 300mm/12” deep

HW0000-2234-11 3RU Flush front panel vented lid box (grey powder coated front panel with RFI logo) 400mm/15.75” deep

HW0000-2334-11 3RU Vented front panel box with vented lid and rear fan cutout (grey powder coated front panel with RFI logo) 400mm/15.75” deep

HW0000-2344-11 4RU Vented front panel box with vented lid and rear fan cutout (grey powder coated front panel with RFI logo) 400mm/15.75” deep

HW0000-2234-11 HW0000-2334-11

172

TechnicalSupport

RFI offer a comprehensive range of products and services to support thewireless industry.

In addition we are happy to assist with the provision of relevant technicalinformation to assist with your wireless business.

The following pages contain some commonly used technical referenceinformation that will assist in the use of the products in this catalogue.

This information is supplemented by technical papers, detailed productbriefs and other material located on our website.

Like to find out more? Then please visit our web site at www.rfi.com.au orcontact your nearest RFI sales office for further assistance.

REFERENCE MATERIALIntroduction to T-Pass® technologyIntroduction to Receiver Distribution SystemsIntroduction to Cavity Filter typesIntroduction to Duplexer typesGeneral engineering data

173

Thousands of TXRX Systems' T-Pass® multicouplers are in use today, inapplications ranging from two-repeater sites to very complex transmit/receivermulticouplers in congested multi-band radio sites. They are also in use incustomised applications such as in-building and in-tunnel communicationssystems.The benefits of T-Pass® multicoupler technology have been proven in thetoughest operating environments throughout the world. Unsurpassed ease ofexpansion, reliable performance and superior system design flexibility have madethe T-Pass® multicoupling technology the preferred choice of radio site ownersand operators.

Cavity Combining MethodologiesOrdinary cavity/ferrite combiners rely upon quarter-wave cable transformers,resonant stubs and star junctions for combining groups of two, four or fivechannels. Mechanical problems quickly develop in the process of trying to locateseveral groups of cavities in close proximity to each other.Additionally, because of the frequency-sensitive, narrowband nature of cabletransformers, operating bandwidth is usually restricted to about 6% of systemcentre frequency.T-Pass® multicoupler systems can be easily expanded one channel at a time withfactory tuned, easy-to-install expansion channel assemblies. Expansion is usuallyaccomplished without modifications to the existing system and it amounts tonothing more than placing a new channel assembly, or several, on top of theexisting system. New channel frequencies can be above, below, or betweenexisting channel frequencies.

T-Pass® principlesThe heart of the T-Pass® multicoupler is an innovative, patented three port cavityfilter that provides two distinct, isolated signal paths.

One path, from a primary input/output to a common antenna port, exhibits a highselectivity bandpass characteristic centred at the resonant frequency of the cavity.The second path, from a secondary input/output port to the antenna port, behavesas a low-loss, 50 ohm transmission line at frequencies other than the resonantfrequency of the cavity filter.The T-Pass® filter shown in the above diagram, consists of a tunable coaxialcavity filter, a bandpass coupling loop and a two-port, T-Pass® coupling loop. Thesingle port bandpass loop is the primary input/output port. The two-port T-Pass®coupling loop has the common antenna port (top) and the secondary input/outputport (bottom).

AntennaPort

T-PassLoop

SecondaryInput/Output

PortTunable Coaxial

Cavity Filter

BandpassLoop

PrimaryInput/Output

Port

}}

Introduction toT-Pass® technology

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Introduction to T-Pass® technology

Technical Support

T-Pass® System ExpansionElectrical and mechanical expandability is an inherent characteristicof T-Pass® multicoupler technology.

Starting a T-Pass® systemA T-Pass® multicoupling system can be started with a single channel.One of the T-Pass® coupling loop connections is terminated with ashort-circuit as future expansion below this first channel, whilstpossible, is unlikely as this cavity is commonly fitted at the bottom ofa T-Pass® Peg Rack, so that expansion channels can be easilyinstalled above it.

Expanding a T-Pass® systemT-Pass® multicoupler expansion amounts to nothing more thaninstalling an expansion channel assembly, or several, on top of anexisting system - creating a "stack". Each expansion channelassembly is factory-tuned to the new channel frequency anddelivered with a thruline cable that is cut to length to "match" the newchannel frequency to the existing system. Many channels can be added in this fashion with practical limits onthe maximum number of channels dictated by site conditions such asintermodulation considerations, mechanical assembly limits andmaximum allowable insertion losses for each application.Nothing changes in the existing system as each new channel isadded and, unless the frequency of a new channel is very close to anexisting one, it is normally not necessary to retune any of thechannels after expansion.Expansion channels for T-Pass® transmitter multicouplers includefactory-tuned ferrite isolators therefore eliminating valuable on-sitetuning time and effort as T-Pass® multicouplers are expanded intothe future.Post-expansion system performance can be calculated using software, and RFI can provide theexpected performance characteristics of the expanded system if requested.

C3

1.5

C2

1.5

C1

1.5

SC

TX3

TX2

TX1

TX1 C1

1.5

SC

A typical T-Pass® transmitter multicoupler channel

Starting a T-Pass® system- the first channel

Expanding a T-Pass® system -adding two more channels

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Technical Support

T-Pass® System FlexibilityT-Pass® multicoupler technology allows anyfrequency to be added on to an existingsystem stack - limited only by the operatingbandwidth of the antenna system to which itis connected. Notably, this capability catersfor two common site situations to beefficiently managed.

a) On less-congested communications sites,a single broadband dipole array antenna (i.e.400-520MHz) can be installed that can easilyaccommodate any frequency thenintroduced onto the site within its entirebandwidth - thus reducing the number ofcoaxial feeders and antennas installed at thesite and reducing site setup costs and towerloading.

b) On congested sites, multiple stacks canbe set up thus providing the flexibility to haveat least one stack available, as determinedby intermodulation considerations withineach stack, to accommodate any frequencylater introduced onto the site.Significantly, multiple frequency bands eg.VHF/UHF can be connected onto a single T-Pass® stack. Through the use of tower-mountedcrossband couplers detailed elsewhere inthis catalogue, these combined frequencybands can be later separated for connectionto multiple antennas - therefore allowing thenumber of coaxial feeder cables used on asite to be reduced. This can also presentsignificant advantages on sites where towerspace and/or loadings are already at apremium - or where expensive tower rentalrates can be optimised through keeping thenumber of antennas installed to a minimum.In addition, this ability is particularly useful in

Distributed Antenna Systems (DAS) where channels across multiple frequency bands maycombined for connection to multi-band antennas or radiating cable - as used for in-building orin-tunnel communications. In conjunction with Crossband Couplers (see elsewhere in thiscatalogue), complex multi-channel, multi-band multicouplers can be easily designed andconstructed using T-Pass® technology.

C3

1.5

C2

1.5

C1

1.5

SC

TX3515.700 MHz

TX2450.650 MHz

TX1403.100 MHz

C3

1.5

C2

1.5

C1

1.5

SC

TX3865.700 MHz

TX277.750 MHz

TX1403.100 MHz

Combining channels acrossmultiple frequency bands

Combining channels acrossthe bandwidth of an antenna

RFI BA-80 400-520MHz Binary Array antenna

Radiating cables or DAS

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Technical Support

T-Pass® System ConfigurabilityT-Pass® multicoupler technology also allows eachchannel to be configured to suit the characteristicsrequired for its correct operation.As with any cavity filter, the T-Pass® loop assembly'sinsertion loss can be varied to provide an alternateselectivity response for each channel, and additionalcavity filters (bandpass, Vari-Notch®, series notch, etc)may also be added to each channel position in the stackto enhance the overall channel response - without losingthe expandability benefits of the T-Pass® technology.T-Pass® multicouplers can be easily configured to meetthe most demanding site design requirements. Thisincludes consideration of whether a channel is for transmitand/or receive operation, the spacing to other frequencieswithin the stack, the required isolation to other frequenciesin the stack, transmitter output powers and receiversensitivities.When used with the other multicoupling systems productsand comprehensive engineering design services availablefrom RFI, the patented T-Pass® technology provides themost flexible transmit and receive multicoupling capabilityin the market today.

TX1456.100 MHz

TX2456.325 MHz

SC

RX1 460.100

RX2 460.325

TR1455.800 MHz

SC

455.900 MHz

ANTENNA

Per-channel configuration flexibility



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Technical Support

T-Pass® - For Transmit and/or ReceiveApplicationsThe concepts of T-Pass® multicoupler technologycan be equally applied to transmit, receive, orcombined transmit/receive applications.Simplex and duplex services can also be combinedtogether onto the same stack to further enhance sitemulticoupler design flexibility.

RX3411.500

C3

1.5

C2

1.5

C1

1.5

SC

RX2460.800

RX1520.875

0.3

RXANTENNA

P 460.800R 455.800

C2

1.0

C4

1.0

C3

1.0

TR 1Ch. 1: 155.310Ch. 2: 155.910

C1

1.0

SC SC

Pass 155.310 MHz

Pass 155.910 MHz

TX3493.5000-5.1 dB

C2

1.0

C1

1.0

SC

TX2493.5250-5.1 dB

TX1467.5000-1.9 dB

HF

HF

By utilising a hybrid combiner in conjunction with T-Pass® channels, very close channel spacing canalso be easily accommodated within T-Pass®multicouplers.Multicoupling adjacent 25KHz channels (as shown)would normally incur around 3.5dB of insertion lossin the hybrid combiner alone.Adding a dual isolator and harmonic filter to thehybrid combiner would increase this to around4.1dB per input. Incorporating these two closespaced frequencies into a T-Pass® stack will onlyincrease this existing design loss by 1dB, but willrealise the real benefit of utilising the existingantenna (and related feeder) system.

In addition, T-Pass® multicouplers can beconfigured for unique applications - such asfrequency agile base stations or multi-frequencypaging.This can be accomplished through either amulti-cavity T-Pass® channel tuned for a wide-passband response, or a multi-cavity "combfilter" configuration. (note the use of T-Pass®loop assemblies on both sides of the cavity filter.

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Technical Support

In a typical multi-channel combined transmit/receivemulticoupler (as shown at right), multiple T-Pass®transmit channels are stacked with a multi-cavitywindow preselector that provides the requiredreceive frequencies passband.At the output of this window preselector there is a lownoise receiver multicoupler amplifier that providessignal into a distribution network for up to four (4)receivers.This transmit/receive multicoupler network can beeasily expanded on both transmit and receivesections, continuing the benefits of the superior T-Pass® system expandability.

So what else can you do with T-Pass®technology?As is shown in an example below, T-Pass® can be implemented as a solution foralmost any system design where superiorperformance, dynamic design flexibility, and futureexpandability is desired.

C1

1.0

C3

1.0

C5

1.0

TX3153.410 MHz

TX2153.545 MHz

TX1153.725 MHz

Pass 158.175 - 158.300

C2

1.50

C4

1.50

C6

1.50

C8 C9

SC

C7

RX1 158.175

RX2 158.220

RX3 158.275

50 Ohms

6 dBPad

PS

TX5856.5625-2.9 dB

TX4857.5625-3.2 dB

TX3858.5625-3.3 dB

C5

1.25

C4

1.25

C3

1.25

RX1 815.5625

FixedPad

PS

SC

C2

1.25

C1

1.25

TX2859.5625-3.2 dB

TX1860.5625-3.2 dB

RX2 814.5625

RX3 813.5625

RX4 812.5625

RX5 811.5625

50 Ohms

50 Ohms

50 Ohms

SystemAntenna

4-SectionTX Combline Filter

851-866 MHz

6-SectionRX Combline Filter

806-821 MHz

SYSTEM SPECIFICATIONS

Maximum Tx Power 12 WMaximum Tx Channel Loss -3.3 dBTx-Tx Isolation -80 dBAntenna - Tx Isolation -70 dBT-R Isolation @ Tx Frequencies -80 dBT-R Isolation @ Rx Frequencies -90 dBTypical System Sensitivity 0.24 uV(antenna feedline loss ~ 2 dB, 0.25 uV Rx sensitivity,net system gain set to +6.0 dB)

Multi-channel High performance Trunking multicoupler

Multi-channel combined transmit /receiver multicoupler

RFI offers a family of modular-style, receiver multicouplers that utilise high level,low noise, bipolar transistor preamplifiers and multichannel power dividers toprovide a dynamically expandable receiver multicoupler system. Applications for the modules in this family include the improvement of receivesensitivity, isolation measurement systems, boosting test equipment (eg. spectrum analyser) sensitivity, and the distribution of signals to multiplereceivers or other equipment.Using our "pyramid" style interconnection system, receiver multicouplers can beprovided in two (2) to sixty-four (64) or more distributed channels in standardconfigurations, and customised designs can easily accommodate therequirements of high density sites requiring even more channels!Preamplifiers and dividers may be added over time, as needed, to keep pace withthe receiver multicoupler capacity requirements on an individual site-by-site basis,therefore optimising expenditure on site equipment at all times. In addition, themodular format of our units allow them to be easily reconfigured at any future dateto adapt to changes in antenna and associated receiver preselector installationsat a site should these occur. This modular flexibility also allows any of thepreamplifier or divider modules to be re-used on other sites if a site isdecommissioned at any time.Preamplifier modules may be cascaded to provide higher levels of gain, orindividual units may be incorporated within complex distribution systems tobalance overall gain levels for particular channels.Single stage module configurations are typically suitable for up to eight (8)distributed channel outputs. A dual stage preamplifier typically has sufficient gainto drive up to sixty-four (64) such channels. Our modular approach also allowsadditional amplifier modules to be easily added, if required, to provide higher gainfor systems requiring more than 64 channelsIn addition, passive attenuators are provided in all models to allow for the correctsettings of system gain within a given site configuration. When dual stagepreamplifiers are employed, the attenuator is connected between stages. In thisposition the second stage will operate at the highest output signal level only whenmaximum gain is required, obtaining the best IM performance possible over allgain adjustments.Preamp stages are individually shielded to provide stable high gain and tominimise extraneous coupling in areas of high level RF fields. Each amplifierstage has an op-amp controlled bias level to ensure stable gain and noise figureperformance across a wide temperature range and supply voltage variation.

Receiver Multicoupler System ExpansionElectrical and mechanical expandability is aninherent characteristic of our modular receivermulticoupler technology.

Starting a Receiver Multicoupler systemA receiver multicoupling system can be started witha configuration for either two or four distributedchannels. Expanding onto the system in the aboveexample, we started the system with an initial four(4) channels. By inserting a two-way and anotherfour-way divider as shown we can increase thestarter system's capacity to cater for up to eight (8)distribution channels. The attenuator gain isadjusted to compensate for the additional dividers.

179

Introduction to ReceiverDistribution Systems

Expanding a system -adding more channels

Starting a system -the first channels

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Introduction to Receiver Distribution Systems

Technical Support

System FlexibilityAs another example, lets start with a dual preamplifier stage,four channel system and expand it out towards 64 channels.

Now we add the first expansion stage that expands the unit'scapacity to up to eight (8) channels. The attenuator gain isadjusted to return the overall gain to the desired setting.

Significantly, output splitters may be located in another rack of equipment, separated from the rest ofthe receiver multicoupler system, therefore un-cluttering site equipment room cabling.

Keeping the build of the "pyramid" style modular configurationensures that each output in the system has the same overallgain as the others. Once again, the attenuator gain is adjustedto return the overall gain to the desired setting.

As determined by the site's capacity requirements, we havenow added the required modules to provide for up totwelve(12) channels. Each time a modular building block isincorporated into the design, the attenuator gain may beadjusted to return the overall gain to the desired setting.

Now we have commenced the next tier of the pyramidmodular structure. Implementing expansion in this wayensures the overall gain is maintained at the same settingfor every channel in the system.If alternate gains are desired within the system, the layerstructure of the pyramid can be configured to enable anyoutput (or group of outputs) to be configured with a higheror lower gain than other outputs in the system.By following the above expansion methodology, theexpansion of a site's receiver multicoupling using RFI-supplied expandable receiver multicoupling technology, cantruly follow the capacity requirements of the site into thefuture.

181

Cavity Filters

DescriptionA resonant cavity filter is typically a two port device that allows signals to flowbetween the two ports with a specific response characteristic applied. Thisresponse characteristic is determined by the filter type, i.e. Bandpass, StandardNotch, Series Notch®, Vari-Notch® also known as pseudo bandpass, or T-Pass®.

The different response characteristics may be utilised within a design to provide adesired overall performance result from the filter assembly.

Most RFI resonant cavity filters are made of seamless aluminium and finished witha passivated alodined finish. They are manufactured using a 1/4" (6.35mm) thicktop cap that is heliarc welded at high RF current points to eliminate the generationof unwanted noise and the need for periodic retuning caused by poor metal tometal contact. In addition, these models use 1/10" (2.54mm) seamless aluminiumpipe walls that do not dent and detune like some thin walled copper resonatingcavities do, and has non-corrosive passivating coating (alodine) applied to theinside, and the outside of the cavity shell. Erratic tuning problems, noise, highloss, degraded selectivity, and corrosion are avoided by the use of quality silver-plated tuning probes and contact fingers. In these models the loops arecalibrated for easy adjustment of insertion loss, also allowing easy replacement ofthe loop to allow the reconfiguration of the cavity's response style for future re-usein other applications.

In addition to tubular resonant cavities, RFI can also supply square styles that arebetter suited to some requirements, and high Q dielectric cavities that offerreduced physical size for applications where mounting space is at a premium.

Typical ApplicationsIndividual or cascaded cavity filters may also be used as a solution in a variety ofinterference management and frequency selectivity situations including;

· Combining multiple transmitters and/or receivers to shared antennas.

· Improving the performance of existing duplexers that have inadequateisolation or off-channel interference rejection.

· At crowded communications sites, cavity filters are ideal for quietingnoisy transmitters or for preventing transmitter intermodulation (I.M.)mixing.

· Frequency pre-selection / unwanted frequency rejection

· Receiver front-end selectivity can be greatly enhanced by the use ofcavity filters - thus reducing or eliminating desensitisation and otheroverload problems.

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Filter SelectionThe various cavity filter types are briefly described below to help identify the one(s) that best suit eachdesign performance requirement.

BandpassPasses one narrow band of frequencies and attenuates all others withincreasing attenuation above and below the pass frequency. A bandpass filter isideally suited to general transmitter spurious output filtering, or sharpeningreceiver front-end selectivity. These cavities have adjustable selectivitycharacteristics (rotatable loops) that provide a compromise between insertionloss (0.5 - 3.0db) and selectivity. Maximum power handling is determined by theinsertion loss setting.

This filter is the best choice when interfering frequencies are not known toany degree of accuracy or when very broadband filtering is required.

Series Notch®Passes a relatively wide band of frequencies while rejecting a very narrow bandof frequencies. Notch depth is variable from 15-25db typically.

This is the best filter for very close separations of frequencies (70KHz andgreater in Low Band, 70 - 200KHz in VHF High band, and 200-400KHz inUHF). The wide passband can be an advantage when filtering multiple-channel transmitters and receivers.

Vari-Notch® Passes a relatively narrow band of frequencies and rejects (notches out) arelatively wide frequency band. This filter has the greatest notch depth whencompared to other types. Notch depth is adjustable but is referenced to apassband insertion loss (typically 0.3 or 0.6db). These filters are available inboth low-pass and high-pass configurations.

This is the best filter type for moderately close to wide frequencyseparations (i.e. 200KHz or greater in VHF High band, or 400KHz or greaterin UHF).

T-Pass® Another type of cavity filter used for expandable transmit and receivemulticoupler applications. Characteristics are identical to a bandpass filter, but aT-Pass® filter has a third port connection for coupling to other channels.

This filter type is uniquely ideal for combining multiple transmitters and/orreceivers onto a common antenna system.

T-Pass® cavity filters are presented in the Multicoupling Systems section of thiscatalogue.



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Insertion Loss versus SelectivityThe insertion loss of a cavity can be varied by adjusting its loops. Generally speaking, increasing theinsertion loss will increase the "Q" (or "selectivity") of the cavity and narrow (or "sharpen") the responseof the filter. This provides flexibility in designing a compromise between insertion loss and selectivityto provide the particular response required in each application.

The curve at left shows the different selectivity ofbandpass cavities with their loops adjusted for0.5db (the wider curve), and 1db (the narrowercurve) respectively. Note the differing attenuationrates between the two curves as you move higheror lower from the tuned centre frequency.

Cascading FiltersCavities of similar (i.e. bandpass/bandpass) or different (i.e. bandpass/notch) filter types may becascaded in series, and sometimes parallel, to achieve a sum result of individual filter performance.

The above curves show the different selectivity of cascaded bandpass cavities. The curve on the leftrepresents three cavities with a combined insertion loss of 3.2db, and the right curve represents fourcavities with a combined insertion loss of 4.3db. Again, note the differing attenuation rates betweenthe two curves as you move higher or lower from the tuned centre frequency. Up to 6db of additional attenuation may be obtainable if the optimum length interconnecting cables areused between cascaded cavities (this additional 6db does not occur in the filter passband, but only atthe frequencies where moderate to high attenuation occurs). RFI provide the optimum cables as partof any multi-cavity design configuration shipped from our factory, and we can also provide cables toyour order when you design or modify your own configurations.

Extra ReadingFor some additional information on the use of the various cavity filter types, please read the followingTX RX Seminar Subjects papers - Interference Control through the use of Cavity Filters and FerriteIsolators, and Combating Spurious Output and Overloading with Cavity Filters. Both can be found on our web site at - www.rfi.com.auOr contact us to organise a copy to be sent out to you.

30

20

10

0

35

25

15

5

ATTE

NU

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N d

B

0.5dB 1.0dB

30

20

10

0

ATTE

NU

ATIO

N d

B

40

50

60

70

80

90

Response of 3 cavities-1.0 -0.8 -0.6 -0.4 -0.2 fo +0.2 +0.4 +0.6 +0.8 +1.0

30

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0

ATTE

NU

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N d

B

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Response of 4 cavities-1.0 -0.8 -0.6 -0.4 -0.2 fo +0.2 +0.4 +0.6 +0.8 +1.0

184

Introduction to Duplexers

DescriptionA duplexer is typically a three port device that allows two discrete signal paths,known as its ports, to be combined onto a common or antenna port. Duplexersare a commonly implemented solution for coupling a full duplex two-frequencybase station repeater to a single antenna.

Duplexers are most frequently designed to couple two discrete frequencies withina frequency sub-band together. However, duplexers can also be designed withbroader responses on either (or both) of its two isolated ports to pass a range offrequencies, increasing their flexibility for use in multi-channel and/or multi-bandsystems.

In addition, units may be interconnected with other multicoupling devices to obtainan overall sum result of their individual characteristics, thereby allowingcustomised design performance requirements to be met for a diverse range offrequency bands, power ratings, channel spacings, port isolation requirements,and other "performance determining" characteristics.

Isolation is provided by the response of the duplexer to ensure that the twoisolated port's signals do not unacceptably interact with each other - i.e. causeinterference. The duplexer response characteristic is determined by the filter typeemployed, i.e. Bandpass, Notch, or Vari-Notch®.

Filtering combinations within one duplexer configuration create subtleperformance variations that can provide solutions to specific applicationsrequirements.

RFI duplexers are made of aluminium and, depending on the model and style,finished with a painted or passivated alodined finish. Erratic tuning problems,noise, high loss, degraded selectivity, and corrosion are avoided by the use ofquality tuning assemblies.

Duplexers are available in a variety of response characteristics, power handlingratings and mounting styles to suit a range of applications. In addition, othermulticoupling devices (i.e. cavities, notch filters, etc) can be connected to aduplexer to further customise its performance characteristics for specificapplications requirements.

In addition to our standard models, RFI can also design and manufacturecustomised configurations to suit specialised operating frequency or mountingrequirements.

Typical ApplicationsDuplexers may be used as a solution in the following combining and frequencyselectivity situations;

· Connecting a full duplex base station to a single antenna or radiatingcoaxial cable.

· Connecting multi-channel transmit or receive multicoupling systems to asingle antenna or radiating coaxial cable.

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Technical Support

Bandpass Passes one or several frequencies within a narrow pass band and attenuates allothers with increasing attenuation above and below this band. A bandpassduplexer is ideally suited for use on busy transmission sites where the maximumprotection (isolation) is desirable at all other frequencies. This style of duplexeruses bandpass cavities and therefore has the individual cavity's adjustableselectivity characteristics (rotatable loops) that provide a compromise betweeninsertion loss (0.5 - 3.0db) and selectivity. Maximum power handling isdetermined by the insertion loss setting.

This duplexer is the best choice on busy communications sites or wherethere is a lot of background noise floor in other segments of the RFspectrum (i.e. when very broadband filtering is required).

Series Notch®Passes a relatively wide band of frequencies while rejecting a very narrow bandof frequencies on each port. This style of duplexer offers the equipmentconnected to it minimal protection (isolation) from frequencies other than thoseconnected to its ports, however this can be significantly improved by connectingadditional multicoupling devices (i.e. cavity filters) as required.

This style is suitable on sites with minimal other equipment, and is a goodduplexer for very close separations of frequencies.

Vari-Notch® Passes a relatively narrow band of frequencies and rejects (notches out) arelatively wide frequency band on each port. This duplexer has the greatestnotch depth (isolation) when compared to other types. Notch depth is adjustablebut is referenced to a passband insertion loss (typically 0.3 or 0.6db). Theseduplexers are available in both low-pass and high-pass configurations.

This duplexer is suitable for most installation applications on mostcommunications sites. This is the best duplexer type for moderately closethrough to wide frequency separations.

T-Pass® Another type of duplexer for more specialised applications, or where the uniqueconnectivity capability of the T-Pass® loop can be used to provide a solution tothe multicoupling requirement. Characteristics are identical to a bandpassduplexer, but a T-Pass® duplexer has the additional loop connection for couplingto other multicoupling devices (i.e. a notch filter) to achieve an overallperformance characteristic, or to provide for adding extra channels to expandthe duplexer into a multi-channel combiner in the future.

This duplexer style can achieve unique performance characteristicsotherwise not available utilising the above duplexer styles.

Duplexer SelectionThe various duplexer types are briefly described below to help identify the one(s) that best suit eachdesign performance requirement.

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Enhancing Duplexer performanceBandpass and/or notch cavity filters of similar (i.e. bandpass/bandpass) or different (i.e.bandpass/notch) filter types may be added to a duplexer to achieve a sum result of individualduplexer/filter performance. In a similar way, alternate performance characteristics can be created to suit almost any application. RFI would be pleased to assist in providing alternate duplexer solutions than the frequently requestedmodels represented in this catalogue.

Extra ReadingFor some additional information on the use of duplexers, please read the following Tech-Aid paper -Duplexer Problems and Remedies. Available on our web site at - www.rfi.com.au - or contact us to organise a copy to be sent out to you.



187

Power In/Out versus Insertion LossField accuracy of wattmeter readings is subject to considerable variance due toRF connector VSWR and basic wattmeter accuracy, particularly at low end scalereadings. Allowing for these variances, this graph offers a convenient means ofdetermining the insertion loss of filter, duplexers, multicouplers, and relatedproducts.

75

INPU

T PO

WER

(WAT

TS)

50

100

125

150

200

250

300

400

500

INSERTIONLOSS (dB)

OUTPUT POWER (WATTS)

FOR LOWER POWER LEVELS, DIVIDEBOTH SCALES BY 10 (5 TO 50 WATTS)

50 75 100 125 150 200 250 300 400 500

7.0

6.5

5.5

5.0

4.5

4.0

3.5

3.0

6.0

2.5

2.0

1.5

1.0

.50

.25

GeneralEngineering Data

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General Engineering Data

Technical Support

Power FWD/REV versus VSWR

FOR

WAR

D P

OW

ER (W

ATTS

) 50

100

200

300

400500

REFLECTED POWER (WATTS)

1.1:1

40 20 10 8.0

6.0

4.0

2.0

1.0

0.8

0.6

0.4

0.2

40

30

20

10

5.04.03.0

2.0

1.0

0.5

1.15:1

1.2:1

1.25:1

1.3:1

1.4:1

1.5:1

1.6:1

1.8:1

2.0:1

2.5:13.0:1

VSWR

REFLECTED POWER (WATTS)FOR OTHER POWER LEVELS, MULTIPLY

BOTH SCALES BY THE SAME MULTIPLIER

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Technical Support

Power and Voltage Ratios Conversion

Voltage Ratio Power Ratio dB Voltage Ratio Power Ratio

1.0000 1.0000 0.0 1.000 1.000

0.9886 0.9772 0.1 1.012 1.023

0.9772 0.9550 0.2 1.023 1.047

0.9661 0.9333 0.3 1.035 1.072

0.9550 0.9120 0.4 1.047 1.096

0.9441 0.8913 0.5 1.059 1.122

0.9333 0.8710 0.6 1.072 1.148

0.9226 0.8511 0.7 1.084 1.175

0.9120 0.8318 0.8 1.096 1.202

0.9016 0.8128 0.9 1.109 1.230

0.8913 0.7943 1.0 1.122 1.259

0.8810 0.7762 1.1 1.135 1.288

0.8710 0.7586 1.2 1.148 1.318

0.8610 0.7413 1.3 1.161 1.349

0.8511 0.7244 1.4 1.175 1.380

0.8414 0.7079 1.5 1.189 1.413

0.8318 0.6918 1.6 1.202 1.445

0.8222 0.6761 1.7 1.216 1.479

0.8128 0.6607 1.8 1.230 1.514

0.8035 0.6457 1.9 1.245 1.549

0.7943 0.6319 2.0 1.259 1.585

0.7852 0.6166 2.1 1.274 1.622

0.7762 0.6026 2.2 1.288 1.660

0.7674 0.5888 2.3 1.303 1.698

0.7586 0.5754 3.4 1.318 1.738

0.7499 0.5623 2.5 1.334 1.778

0.7413 0.5495 2.6 1.349 1.820

0.7328 0.5370 2.7 1.365 1.862

0.7244 0.5248 2.8 1.381 1.905

0.7161 0.5129 2.9 1.396 1.950

0.7079 0.5012 3.0 1.413 1.995

0.6998 0.4808 3.1 1.429 2.042

0.6918 0.4786 3.2 1.445 2.089

0.6839 0.4677 3.3 1.462 2.138

0.6761 0.4571 3.4 1.479 2.188

0.6683 0.4467 3.5 1.496 2.239

0.6607 0.4365 3.6 1.514 2.291

0.6531 0.4266 3.7 1.531 2.344

0.6457 0.4169 3.8 1.549 2.399

0.6383 0.4074 3.9 1.567 2.455

0.6310 0.3981 4.0 1.585 2.512

0.6237 0.3890 4.1 1.603 2.570

0.6166 0.3802 4.2 1.622 2.630

0.6095 0.3715 4.3 1.641 2.692

0.6026 0.3631 4.4 1.660 2.754

0.5957 0.3548 4.5 1.679 2.818

0.5888 0.3467 4.6 1.698 2.884

0.5821 0.3388 4.7 1.718 2.951

0.5754 0.3311 4.8 1.738 3.020

0.5689 0.3236 4.9 1.758 3.090

Voltage Ratio Power Ratio dB Voltage Ratio Power Ratio

0.5623 0.3162 5.0 1.778 3.162

0.5559 0.3090 5.1 1.799 3.236

0.5495 0.3020 5.2 1.820 3.311

0.5433 0.2951 5.3 1.841 3.388

0.5370 0.2884 5.4 1.862 3.467

0.5309 0.2818 5.5 1.884 3.548

0.5248 0.2754 5.6 1.905 3.631

0.5188 0.2692 5.7 1.928 3.715

0.5129 0.2630 5.8 1.905 3.802

0.5070 0.2570 5.9 1.972 3.890

0.5012 0.2512 6.0 1.995 3.981

0.4955 0.2455 6.1 2.018 4.074

0.4898 0.2399 6.2 2.042 4.169

0.4842 0.2344 6.3 2.065 4.286

0.4786 0.2291 6.4 2.089 4.365

0.4732 0.2239 6.5 2.113 4.467

0.4677 0.2188 6.6 2.138 4.571

0.4624 0.2138 6.7 2.163 4.677

0.4571 0.2089 6.8 2.188 4.786

0.4519 0.2042 6.9 2.213 4.898

0.4467 0.1995 7.0 2.239 5.012

0.4416 0.1950 7.1 2.265 5.129

0.4365 0.1905 7.2 2.291 5.248

0.4315 0.1862 7.3 2.317 5.370

0.4266 0.1820 7.4 2.344 5.495

0.4217 0.1778 7.5 2.371 5.623

0.4169 0.1738 7.6 2.399 5.754

0.4121 0.1698 7.7 2.427 5.888

0.4074 0.1660 7.8 2.455 6.026

0.4027 0.1622 7.9 2.483 6.166

0.3981 0.1585 8.0 2.512 6.310

0.3936 0.1549 8.1 2.541 6.457

0.3890 0.1514 8.2 2.570 6.607

0.3846 0.1479 8.3 2.600 6.761

0.3802 0.1445 8.4 2.630 6.918

0.3758 0.1413 8.5 2.661 7.079

0.3715 0.1380 8.6 2.692 7.244

0.3673 0.1349 8.7 2.723 7.413

0.3631 0.1318 8.8 2.754 7.586

0.3589 0.1288 8.9 2.786 7.762

0.3548 0.1259 9.0 2.818 7.943

0.3508 0.1230 9.1 2.851 8.128

0.3467 0.1202 9.2 2.884 8.318

0.3428 0.1175 9.3 2.917 8.511

0.3388 0.1148 9.4 2.951 8.710

0.3350 0.1122 9.5 2.985 8.913

0.3311 0.1096 9.6 3.020 9.120

0.3273 0.0172 9.7 3.055 9.333

0.3236 0.1047 9.8 3.090 9.550

0.3199 0.1023 9.9 3.126 9.772

CONVERSION TABLEPOWER AND VOLTAGE RATIO TO DBTO ACCOUNT FOR THE SIGN OF THE DECIBEL

For positive (+) values of the decibel - Both voltage and powerratios are greater than unity. Use the two right-hand columns.

For negative (-) values of the decibel - Both voltage and powerratios are less than unity. Use the two left-hand columns.

Power Ratio Voltage Ratio

+ 9.1 dB- 9.1 dB

8.1280.1230

2.8510.3508

Example: ± Given 9.1dB; Find:

GIVEN : DecibelsTO FIND : Power and RatiosVoltage

Current}}

-dB+ -dB+

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For TX Power of: 25 watts - subtract 6 dB 50 watts - subtract 3 dB 100 watts - no correction 250 watts - add 4 dB 350 watts - add 5.5 dB

ATTE

NU

ATIO

N (d

B)

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40

60

70

80

90

100

.2 .3 .4 .5 .6 .7 .8 .9 1

400 - 512 MHz BAND FREQUENCY SEPARATION (MHz)

For TX Power of: 25 watts - subtract 6 dB 50 watts - subtract 3 dB 100 watts - no correction 250 watts - add 4 dB 350 watts - add 5.5 dB

50

40

60

70

80

90

100

.2 .3 .4 .5 .6 .7 .8 .9 1 2 3 4 5 6 7 8 9 10

132 - 174 MHz BAND FREQUENCY SEPARATION (MHz)

2 3 4 5 6 7 8 9 10

Isolation Curves for Transmitter / Receiver Separations

The curves shown below for use with filters, duplexers, and multicouplers, indicate the amount ofisolation or attenuation required between a typical 100 watt transmitter and its associated receiver atthe Tx (carrier suppression) and Rx (noise suppression) frequency which will result in no more than a1 dB degradation of the 12 dB SINAD sensitivity.

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Technical Support


Attenuation provided by HORIZONTAL separation of dipole antennas

Attenuation provided by VERTICAL separation of dipole antennas

Isolation vs Antenna Separation

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Conversion of VSWR to Return LossVSWR dB

1.01 46.06

1.02 40.09

1.03 36.61

1.04 34.15

1.05 32.26

1.06 30.71

1.07 29.42

1.08 28.30

1.09 27.32

1.10 26.44

1.11 25.66

1.12 24.94

1.13 24.29

1.14 23.69

1.15 23.13

1.16 22.61

1.17 22.12

1.18 21.66

1.19 21.23

1.20 20.83

1.21 20.44

1.22 20.08

1.23 19.73

1.24 19.40

1.25 19.08

1.26 18.78

1.27 18.49

1.28 18.22

1.29 17.95

1.30 17.69

1.31 17.45

1.32 17.21

1.33 16.98

1.34 16.75

1.35 16.54

1.36 16.33

1.37 16.13

1.38 15.94

1.39 15.75

1.40 15.56

1.41 15.38

1.42 15.21

1.43 15.04

1.44 14.88

1.45 14.72

1.46 14.56

1.47 14.41

1.48 14.26

1.49 14.12

1.50 13.98

VSWR dB

1.55 13.32

1.60 12.74

1.65 12.21

1.70 11.73

1.75 11.29

1.80 10.88

1.85 10.51

1.90 10.16

1.95 9.84

2.00 9.54

2.05 9.26

2.10 9.00

2.15 8.75

2.20 8.52

2.25 8.30

2.30 8.09

2.35 7.89

2.40 7.71

2.45 7.53

2.50 7.36

2.55 7.20

2.60 7.04

2.65 6.90

2.70 6.76

2.75 6.62

2.80 6.49

2.85 6.37

2.90 6.25

2.95 6.13

3.00 6.02

3.05 5.91

3.10 5.81

3.15 5.71

3.20 5.62

3.25 5.52

3.30 5.43

3.35 5.35

3.40 5.26

3.45 5.18

3.50 5.11

3.55 5.03

3.60 4.96

3.65 4.88

3.70 4.81

3.75 4.75

3.80 4.68

3.85 4.62

3.90 4.56

3.95 4.50

4.00 4.44

VSWR dB

5 3.52

6 2.92

7 2.50

8 2.18

9 1.94

10 1.74

11 1.58

12 1.45

13 1.34

14 1.24

15 1.16

16 1.09

17 1.02

18 0.97

19 0.92

20 0.87

25 0.70

30 0.58

35 0.50

40 0.43

45 0.39

50 0.35

55 0.32

60 0.29

65 0.27

70 0.25

75 0.23

80 0.22

85 0.20

90 0.19

95 0.18

100 0.17

150 0.12

200 0.09

250 0.07

300 0.06

350 0.05

400 0.04

450 0.04

500 0.03

1000 0.02

rfi multicoupling

Documents

multicoupling systems

tpass multicouplers

tpass technology

distribution systems

hybrid multicoupling

multicoupling system

rebroadcast systems

cable systems