broadcast · auto digital white and black balance true apo 2 ft. candle sensitivity extremely quiet...

D

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How much does broadcasting pay?A national salary survey

Future of 1st Class License

a

A BroadcastBreakthrough of

Minor Proportions.

Hitachi SK -91...Critical inches shorter and precious pounds lighter.Creating thc )1-1(1's smallest, lightest ENG/EFI)broadcast can icra \\ no small accomplishment. Butmaking it so without sacrificing a single spec or capa-bility qualified as a genuine breakthrough.

Of course, the beneficiary of our advanced engineer-ing is you. You get all the performance that high tech-nology has to offer in a more compact, efficientpackage. (Cameramen are amazed at the SK -91's re-sponsive, featherlight handling.)

Image quality naturally adheres to the highestbroadcast standards, with \ your choice of Saticons ,

Plumbicons®, or diode guns°, attaining up to 57dBand 600 -line resolution. Why not call your local Hitachi

©Registered trademarks of NV. Philips

regional office and schedule a thorough in -person eval-uation of the SK -91? We think you'll agree that abreakthrough of minor proportions can be of majoradvantage to you.

Sly 91 SPECIF1CA'rl()N IIR ;111.1( I IS

Weight: 9.1/2 lbs. 57(111S/N ratio and 600 -line resolution Auto digital white and black balance True APO 2 ft. candle sensitivity Extremely quiet + 9/4- 18dB gain Optional triax/digital unit Studio accessories for added versatility

HITACHIHitachi Denshi America,Ltd.

Tomorrow's Technology Today

175 Crossways Park West, Woodbury, N.Y. 11797 (516) 921-7200 New York Chicago Los Angeles Atlanta Cincinnati Dallas Denver Seattle Washington, D.C.

Circle (1) on Reply Card

All thosein favor of patch panels,raise your right hand.

Wrestling with those patch coris cumbersome, awkward andvery good engineering.

But now there's a way to roaudio signals with pushbuttonease. Without the patch cords.Without the separate amps, thenoisy pots and the mad scrambleto adjust levels every timeyou switch inputs.

Introducing the"electronic patch panel:'

Meet the incrediblenew Ramko ARA-1612Audio Router/Amplifier.

It lets you use frontpanel and/or remotecontrol pushbuttonsto route 16 inputsto any of 12 outputs,simultaneously orindividually, with aninstant LED displayof what signal is goingwhere.

Each balanced inputhas its own gainadjustment. The balancedoutputs are buffered so youcan feed a single input to all12 outputs with no interaction.In addition, each output modulecontains stereo/ mono switchesenabling operation in either mode.And, incredibly, you need only a singleshielded twisted pair to make all 16 inputsavailable at a remote location.

More good news.

The liamko ARA 1612 sy stem alsofeatures solid, broadcast -level

Ramko Research 1980 Circle (4) on Reply Card

performance specs. Expandabilityup to 45 in and thousands out.

Remote control capability. Adual instant-switchoverpower supply for 100%on -air reliability. And

it's backed by the onlytwo-year warranty

in the industry.

Our unique two-week free trial.

Try the RamkoARA-1612 free for

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WriteRamko Research,

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details. Or just call916) 635-3600 collect -

we'll set you free.

R A NIKOBrains, not brawn.

BRoaDcaEenaneeRinG

The journal of broadcast technology

October 1980 El Volume 22 No. 10

6 FCC Update10 Station -to -station12 Industry news

Association news15 NAB22 NRBA

24 Automatic power level control (Part II)By R.M. Unetich and D.D. Harbert, RCA, Meadow Lands, PA

28 Broadcasting salaries: A national surveyBy Joan Jackson, associate editor, and Kevin Kious,managing editor

36 SMPTE gets ready for major conferenceBy Bill Rhodes, editorial director

42 The future of AM and FM broadcastingBy Wally Johnson, executive director, ABES

46 67th AES convention

58 Eliminating the first class license: pros and cons

62 An automatic camera viewfinder switcherBy Jack Hastings, chief engineer, WMAR-TV2, Baltimore, MD

66 Business news71 People in the news73 New products77 Advertisers' index77 Classified ads

®Copyright, 1980, by Intertec Publishing Corporation. All rights reserved. Material may notbe reproduced or photocopied In any form without written permission of publisher.

BRosacasflC

irT,.

$1 a

How much does broadcasting nag?A national salary survey

Future al 1st Class License

THE COVER

More than 1000 broadcast personnelresponded to BE's survey on salaries.Details of the report are found in anarticle on page 28.

NEXT MONTH Digital Video Noise Reduction Noise Reduction in the Audio Signal Advances in Audio Processing The Democratic Convention

Technical Highlights

BROADCAST ENGINEERING (USPS338-130) is published monthly byIntertec Publishing Corporation, 9221Quivira Road, P.O. Box 12901, Over-land Park, KS 66212. Postmaster,return from 3579 to the above address.

2 Broadcast Engineering October 1980

Wireless Intercom Syste

Experience the freedom ofintercommunicat ons that is nowavailable with the new CetecVega wireless intercom system.Since no cables a -e requiredbetween users, imagine howeffectively the folowingsituations could be handled. Cueing for souid, light and

camera crew. Stunt coordination. Performer script cueing fro

script person ol camera. Sound program monitoring. Communications over distance

beyoid speaking range,thereby eliminating theconfusion of hand signals.The compact transmitter and

receiver offer duplex (simul-taneous transmit and receive) orpush -to -talk operation up to arange of 1000 feet. The systemsare available win a complete lineof accessories including single ordouble muff headsets or earpieces.

Cetec Vega's le.adership in thewireless communications fieldassures you years of trouble freeservice and application flexibilitynot found in other similarsystems.

GENERAL SPECIFICATIONS

Frequencies150 to 216 MHzCrystal controlled frequencystability.

Battery Type mad Life9 volts/Mallory MN1604 alkaline orequivalent. 8 tc 10 hoursoperation.

Transmitter Power50 milliwatts (Ppproved for F C Cparts 90 and 7').

Receiver Audic LevelOperator Adji .table.

Audio Bandpass30C to 3000 H.!.

Microphone TypeElectret.

Transmitter and ReceiverDimensions

3.8' long x 2.8' wide x 1" thick.Operation

Duplex operation capability,as well as simFiex.

OR -1 Receiver 0T-1 Transmitter

Division of Cetec Corporation

P.O. Box 5348 El Monte, CA 91731 (213) 442-0782 TWX: 910-587-3539

Circle (5) on F eply Card

All WirelessMicrophones AreNot Created Equal

This One is aTelex

Wireless mics aren't new, and sometimes it seems as if allsystems are basically the same. However, Telex and itsTurner and Hy -Gain divisions have combined their 100 yearsof cumulative experience in microphone, antenna and rfdevelopment to produce a DUAL DIVERSITY WIRELESSSYSTEM THAT COSTS AS LITTLE AS SINGLE ANTENNAINSTALLATIONS. The FM receiver can be operated withone or two antennas. When two antennas are used, a uniqueautomatic phase summation network (patent applied for) pro-vides superb dual diversity reception.

The Telex wireless sounds as good as a hard wired mic, offersplenty of options and is economically priced. If you're inter-ested in a wireless system that is more than equal-write ustoday for full specifications.

Quality products for the audio professional

TELEXTELEX COMMUNICATIONS, INC

'9600 Aldrich Ave So . Minneapolis. MN 55420 U.S AEurope: 22. rue de la Legion-d'Honneur, 93200 St Denis. France.

Circle (6) on Reply Card4 Broadcast Engineering October 1980

BROaDCaST®Editorial, advertising and circulation corre-spondence should be addressed to P.O.Box 12901, Overland Park, KS 66212 (asuburb of Kansas City, MO); (913) 888-4664.

EDITORIALBill Rhodes, Editorial DirectorJohn Wiliszowski, Video EditorKevin Kious, Managing EditorJoan Jackson, Associate EditorRhonda L. Wickham, Editorial AssistantMary Thornbrugh, Editorial AssistantPat Blanton, Directory EditorARTDudley Rose, Art DirectorJoy Viscek, Graphic DesignerTECHNICAL CONSULTANTSHoward T. Head, FCC RulesHarold L. Kassens, FCC RulesCarl Babcoke, TechnicalDonald L. Markley, FacilitiesArt Schneider, A.C.E., Post -productionCORRESPONDING ASSOCIATIONSAmerican Society of TV CameramenAssociation for Broadcast

Engineering StandardsNational Association of BroadcastersNational Radio Broadcasters Assn.CIRCULATIONJohn C. Arnst, DirectorEvelyn Rogers, ManagerADMINISTRATIONR. J. Hancock, PresidentGeorge Laughead, Publisher

ADVERTISINGCameron Bishop, Marketing DirectorMary Birnbaum, Production ManagerRegional advertising sales offices listednear the Advertiser's Index.

Member,51.ABP American Business Press

Member,

V BPA Business PublicationsAudit of Circulation

BROADCAST ENGINEERING (USPS 338-130) is published monthly by IntertecPublishing Corporation, 9221 Quivira Road,P.O. Box 12901, Overland Park, KS 66212.Postmaster, return form 3579 to the aboveaddress.

BROADCAST ENGINEERING is edited forcorporate management, engineers/tech-nicians and other station managementpersonnel at commercial and educationalradio and TV stations, teleproductionstudios, recording studios, CAN and CCTVfacilities, and government agencies. Quali-fied persons also include consulting engi-neers and dealer/distributors of broadcastequipment.

SUBSCRIPTIONS: BROADCAST ENGI-NEERING is mailed free to qualifiedpersons in occupations described above.Non -qualified persons may subscribe at thefollowing rates: U.S., one year, $20; allother countries, one year, $26. Back issuerates, $5, except for the September Buyers'Guide issue, which is $15. Rates includepostage. Adjustments necessitated by sub-scription termination at single copy rate.Allow 6-8 weeks for new subscriptions orfor change of address. Controlled circula-tion postage paid at Kansas City, MO.

111=D' © 1980. All rights reserved.

!Merl. Publishing Corp

TM 500 nowgives youthe quickest distortionmeasurements ever.Introducing theAA 501 DistortionAnalyzer and SG 505Oscillator. Fast,automated andaccurate.

This new pair of TM 500 Plug -insmakes distortion measuresnelttruly automatic to save you bothtime and money. For production

sting, the AA 501's automaticspeed provides substantial laborreduction with no loss in acct_, -racy. Together, the AA 501 andSG 505 have the lowest nar-monic distortion plus noise(THD+N) rating in the entireindustry: 0.0025%.

The SG 505 Cscillalor out-puts a sine wave with :he lowestresidual distortion on today'smarket (.0008%) The AA 501Distortion Analyzer uses digitalprocessing to lack in on :es -signals, set levels and ad ust thenotch filter for ruffling. Al: mea-surements, including dB levels,are precalculated arid then ciplayed on an LED tea

Copyright © 1980. Telr1ronix Inc All rights reserved 884

The AA 501 and SG 505 areboth TM 500 Plug -ins that can oeinstalled in any of five main-frames, including rackmount,bench and portaole. They canalso be separated and still usedas a team, even though milesapart. Or configured with over 40other TM 500 Plug -ins currentlyavailable.

To find out more about theAA 501 Distortion Analyzer andSG 505 Osc Haler, contact yourlocal Tektronix Field Office orw.-ite Tektronix, Inc.

For Immediate action, dial toll free auto-matic answering service 1-800-547-1512

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October 1980 By Howard T. Head and Harold L. Kassens

Low -power television stationsproposed

The commission has proposed toestablish a new class of low -powertelevision broadcast station. Thecommission regards this innovationas the first new type of broadcastservice to be inaugurated in morethan 20 years. The proposed newclass of station is essentially atelevision translator and, in fact,the only distinction will be thatwhereas translators simply pick upand rebroadcast the signals of aregular broadcast station, the low -power station will be permitted tooriginate its own programming. Norestrictions are to be placed on thetype of programming, which mayeven be pay -TV, although the re-quirements for copyright and re-transmission consent will continuein force.

Operation will be permitted onboth VHF and UHF channels 2 to 69,inclusive. Assignments will continueto be made in the same manner astranslators, that is, on a strictnoninterference basis. VHF transla-tor output power will be a 10Wrestriction east of the MississippiRiver. UHF output power will beraised from 100W to 1000W.

Although this is still a commissionproposal, the commission will acceptand grant applications that conformto the terms of the proposal.Preferences will be given to minorityapplicants and to those proposingan educational program service.

Here come the VHF televisiondrop -ins

The commission established thepresent television channel alloca-tions system in 1952 when itadopted its Sixth Report and Order.The system up until now hasconsisted of rigid mileage separa-tions for co -channel and adjacent -channel interference, and in thecase of UHF allocations, taboomileage separations as well. If youmet the mileages, you were in, andif you didn't, you were out.

Except for one case in the VirginIslands, where any interference that

might have occurred would havebeen over water, the commissionhas until now held the line and hasnot made any new assignmentswhere the mileage restrictions werenot met.

Now that's all changed. Thecommission has made four short-spaced VHF drop -ins: Knoxville, Ch.8; Salt Lake City, CH. 13; Charles-ton, WV, Ch. 11; and Johnstown,PA, Ch 8. Unless the commissionchanges its mind or the courtchanges its mind for it, those arehere to stay.

At the same time it made thosefour short -spaced drop -ins, the com-mission proposed to open the gatesto all VHF short -spaced drop -inproposals. Although the details havenot been released as of this writing,it looks as though the commissionwill entertain co -channel shortagesof as much as 75 miles andadjacent -channel shortages of up to25 miles. In the case of co -channelshortages, there will be a require-ment to provide equivalent protec-tion to existing stations. This is tobe accomplished by reducing heightand power or by using a directionaltransmitting antenna. Actually theword protection is misleading be-cause even with the equivalence thedrop -ins will still cause considerableinterference to existing service.

Another unsolved problem is thatof carrier offset. The drop -ins mustbe offset from their neighbors,otherwise the interference will beintolerable; but there are only threepositions in the offset schedule:OkHz, +10kHz and -10kHz. Andthere is no logical way to addanother. So when a channel isdropped in the middle of thetriangle formed by its three neigh-bors, what's going to give?

First class licenses out the window?The FCC has extended the review

of its operator licensing program byissuing a Further Notice of ProposedRule Making (Docket No. 20817)proposing to discontinue the issu-ance of new and renewed FirstClass Radio Telephone Operator

Licenses and to eliminate the re-quirement for license examinationfor persons who perform installa-tion, maintenance and technicalsupervision at broadcast stations.Essentially, the commission is pro-posing that all persons performingtechnical duties at AM, FM, TV andTranslator stations be required tohold only a Restricted Radiotele-phone Operator Permit. The com-ment due date is November 14. Allreplies must be mailed by December15. (See page 58 for more details.)

...But were afraid to askThe commission is still wrestling

with the technicalities that have tobe cleared out of the way, but theday is coming when stations in theAM band will be separated by 9kHzinstead of the present 10kHz.

Several plans are under consider-ation, but under the plan now mostfavored no one would have tochange by more than 4kHz. To findout whether a station is one of thelucky ones, divide it by nine. If thedivision comes out even without aremainder, the frequency won'thave to be changed. If there is aremainder, here's what it means.

if the remainder go downis in frequency1 1kHz2 23 34 4

if the remainderis567

8

go up infrequency

4kHz32

1

If the remainder is 9, a mistake hasbeen made in division.

Short circuitsThe commission has issued a

declaratory ruling that the pouringof concrete footings for a broadcasttower does not constitute prematureconstruction. It wasn't always so...The commission has authorized anAM station in Iowa to operateduring some nighttime hours with apower of 4W...The commission isproposing the conversion of all AMdirectional antenna radiation pat-terns to standard patterns...TheTelevision Rules have been amendedto permit the aural and visualtransmitters to be operated separ-ately with unrelated program mater-ial between midnight and 6AM...Thecommission's UHF ComparabilityTask Force has prepared consumerinformation on adequate home TVreceiving antennas.


mibl3DIGITAL REMOTE (=ROLOur new and exciting co -ax digital remote control system providesdependable, studio -like remote control to ENG/EFP cameras in thefield at a fraction of the cost of other systems!

It is the most affordable and reliable remote controlsystem available on themarket today. Easilyinterfacing with a fullrange of professionalENG/EFP video camerascurrently in use, such as:Ikegami HL77 andHL79A, RCA TK-76B,NEC MNC-71 cameras,and many more.

Outstanding Features:O System consists of mini -CCU, analog-to-digi=a1 encoder, and digital -

to -analog decoder.O Permits control of all functions normally required in OB van,

including genlock.O Digital encoder (19" rack -mounted) designed to accommodate two

mini-CCU's to control two cameras (each equipped with itsown decoder).

O Lightweight, camera -mounted decoder features intercom capability.O Digitally encoded control data relayed to camera -mounted decoder

through a simple, lightweight and reliable coaxial cable.O Eliminates the need for expensive, bulkier, multi -core or triax camera

cable, and reduces to a minimum the risks normally associated withthe use of such camera cables.

O Low-cost coaxial cable allows complete remote control and cameraset-up functions from greater distances with greater safety andutmost reliability.

O System is ideal for all extended shooting situations such as sportsevents, live concerts, political rallies, etc.

For full details, call toll -free: 800-421-7486.

cinemaGTechnology In The Service Of Creativity

2037 Granville Avenue, Los Angeles, California 90025Telephone: (213) 478-0711 (213) 477-1971 Telex: 69-1339

RCA TK-76B shown with decoderneatly "sandwiched" between camerabody and door.

Ikegami HL -77 shown with side -mounted decoder.

October 1980 Broadcast Engineering 7

...and whathave we doneforyou lately?

In 1964 we delivered the original30mm Plumbicon® camera tubethat revolutionized TV broadcasting...

5 years later we introduced the 1 -inchPlumbicon tube that permittedthe design of more compactbroadcast cameras......and 5 years after that-the 2/3 -inch Plumbicon tubebrought broadcast quality to portablecameras and gave us ENG...

Today, we bring you two of thesepopular pickup tubes with furtherimprovements in performance.

Ever since the original Plumbicon tube won the Emmy Awardfor having revolutionized color TV broadcasting, we've beenkeenly aware of the importance of the name Plumbicon to theTV industry which has come to depend on it as it's assuranceof consistent performance and quality. There's no disputingthe fact that contemporary Plumbicon tubes outperform theiroriginal versions by a wide margin.

Two of the most recent improvements in the Plumbiconpickup tube line, (the 30mm X01410 and the 2/3 -inchX01427) are described here. These tubes, like all PlumbiconTV camera tubes, offer unmatched resolution and sensitivity,superior color rendition...excellent highlight handling..lowand steady dark current...high signal-to-noise ratio...minimallag...stable operation over a wide temperature range...andlong life.

Type X011427: Offers significantly higherresolution than earlier versions; modulationdepth is 60% typical at 320 TV lines givingsharper, clearer pictures and allowingoperation at lower light levels. New gundesign and 1500 -line mesh constructionresult in improved registration and geom-etry, reduction of flare by a factor of 3 andreduced beam landing error.

Type X01410: The XQ1410 gained im-mediate acceptance by the television in-dustry as a significant advance over allprevious 30mm tubes. This recognition isbased on the XQ1410's dramatic reductionin lag (typically 37% below that of other30mm Plumbicon tubes). The X01410 endscolor -fringing, greatly reduces picture -smear and gives better dynamic resolution-even under poor lighting conditions. Withits internal' bias lighting, all three channelscan now be balanced for identical lag

characteristics. New gun construction gives improvedresolution, (60% typical modulation depth at 400 TV lines).New mesh construction results in better geometry andregistration and significantly reduces microphony.

Make no mistake - these are vitally important improve-ments on vitally important camera pickup tubes...but thesedevelopments are only part of the answer to-"What have wedone for you lately,"

® Reg T.M. of N.V. Philips of the Netherlands

...andnow the newgenerationof Plumbicon TVcamera tubes:with them begins the age of Electronic Cinematography.

"Cinematography" once meant the creation of motion pictureson film, and film alone. But no more.

The new generation of Amperex Plumbicon TV pickuptubes, in combination with recent advances in new cameradesign and videotaping systems, is destined one day toreduce to near -zero the use of film in broadcast c nema-tography and in motion picture production. Now, indeed,begins a new era...and a new art form: Electronic Cinema-tography. All -electronic production will offer a technicallysuperior product, and will permit shorter lead times betweenproduction and broadcast...and it allows motion picturedirectors to combine the creative aspects of single -camerafilm production with the immediacy of live -on -tape TVtechniques.

All this has been no accident, of course. We, for instance,have been working toward this moment ever since theintroduction of the original Plumbicon tube...right through theadvent of ENG. first brought to reality by our 2/3 -inch versionof the Plumbicon tube.

This steady stream of advances in TV pickup tube tech-nology now culminates in a new generation of Plumbicontubes that offers major advances in resolution and lag per-formance...advances that were prerequisite to the dawn ofthe age of Electronic Cinematography.

Type S45X43: Developed for use in new studio camerasthat will accept 30mm tubes, has limiting resolution. of 1600TV lines, with modulation depth of 90% at 400 TV lines and40% at 800 TV lines. Nothing like t has ever been offered in abroadcast quality tube. The S45XID provides for external biaslighting; but decay lag, even without bias light, is typicallyonly 5% after 50 milliseconds.

Type S73XQ: Physically interchangeable with conven-tional 1 -inch broadcast Plumbicon tubes, can be used inexisting studio and field production cameras with only minorcircuit modifications. Typical limiting resolution of the S73XQis 900 TV lines. with modulation depth of 65% at 400 TV lines.Overall signal-to-noise ratio can be maximized in the 373X0by a low -capacitance target contact. A revolutionary gundesign in the S73XQ reduces lag; decay lag is typically 2% at50 milliseconds with bias lighting.

Both of these new -generation tubes inherit all the finerqualities of the original Plumbicon pickup tube: near -zerodark current...high sensitivity...resistance to burn -in, even inhighlights...precise geometry and registration...and long life.You can expect from them what you have learned to expectfrom Amperex Plumbicon tubes; performance at the edgeof tomorrow.

For more information, contact. Amperex Electronic Cor-poration, Slatersville Division, Slatersville, Rhode Island02876. Telephone: 401-762-3800.

Amperox...dedicat to product excellence

A NORTH AMERICAN PHILIPS COMPANY


station -to -stationSensitivity of transmittertubes to the audio signalBy John J. WebberChief operatorKHOW-AM, Denver

KHOW operates a Rockwell/Col-lins 828E-1 PowerRock AM transmit-ter, which uses the relatively newhigh -mu 3CX3000F7 triode in themodulator and PA. For severalmonths, the transmitter would mo-mentarily pop off the air and comeright back up. Inspection wouldreveal no blown fuses, trippedbreakers or overload tally lights.The transmitter would operate nor-nally for a while before the problemrecurred.

A pattern developed: the transmit-ter would pop off the air only oncertain songs.

One night during maintenance, I

drove the transmitter directly withan audio oscillator and slowly sweptthe low frequencies. At approxi-mately 225Hz, the transmitter wentinto a fit of popping off, then on,then off. A few hertz up or downrelieved the problem.

Consultation with Rick Tanner of

Rockwell/Collins revealed that otherPowerRock users had experiencedsimilar problems. Tanner hadopened several defective tubes re-turned to the factory in an attemptto isolate the cause and found thatthe tube grid structure had warpedand was no longer concentricaround the cathode. In addition, thegrid structure is mechanically res-onant at 200-250Hz. The result wasthis:If a musical note at the grid'sresonant frequency was presentedto the transmitter, the grid structurewould vibrate, bringing it in proxim-ity to (or actually touching) thecathode. A cathode -grid short coulddevelop and the change in the griddriving impedance was enough toset off the RF driver protectioncircuits if the PA tube was at fault.Or in the case of the modulator, theaudio would momentarily disappear.

The reason for all this difficultywas the fact that the grid, asoriginally built by Eimac/Varian,was supported only at the bottom ofthe tube. The grid structure resem-bles fly screen in construction anddissipates up to 200W in operation.All that heat was warping the grid,although it would handle the loadotherwise.

Rockwell/Collins informed Varianof the problem. Varian is nowbuilding 3CX3000F7s with a supportring at the top of the grid.

I informed Econco Broadcast Ser-vices of the problem and the

company is rebuilding 3CX3000F7swith pins to support the grid. Iinstalled a set of rebuilt tubes in thetransmitter and again slowly sweptthe low audio frequencies. There isno problem with carrier popping offor audio momentarily disappearingon certain songs any longer.

If you are not sure whether yourtubes have pinned grids and yourtransmitter is exhibiting one or moreof the above symptoms, try injectingaudio directly into the transmitter,slowly sweeping the low frequen-cies. If the transmitter goes intoconvulsions at some discrete lowfrequency, there is a defective tube.

Incidentally, the same problem,only this time with 3CX3000F1s inthe modulators of an RCA BTA-5R,was not diagnosed until the defec-tive tube went into a dead cathode -grid short and was replaced. In thatcase also, certain songs wouldcause overloads and shutdown ofthe transmitter.

If you find that you have adefective 3CX3000F7 manufacturedby Eimac/Varian that exhibits agrid -resonance problem, contactKen Atkinson in Salt Lake City,(801-972-5000).

*Editor's note:Effective October 1, Rockwell/Col-

lins broadcast products are manu-factured and marketed by Continen-tal Electronics Manufacturing Co.,Dallas, TX.

Using empty hour-longvideotape reelsBy Richard J. Dietzproducer -directorWFIE-ITV, Evansville, IN

Have you been throwing awayyour empty hour-long tape reels aswe have been? We spool quite a bitof videotape to smaller reels, leav-ing dozens of empty hour-long reelsthat ended up in the trash. I hadthought about the waste and won-dered whether there couldn't be apractical use for these reels.

After we put an ENG van into usewith inter -city microwave and anRCA TK-76 camera, we needed por-table reels for microphone cable,video line and light -duty power line.We had purchased one portablereel for a previous mobile tape unitthat had been in use during b&wdays. After going out on remotesseveral times with what we call ourLive Eye, ENG microwave system,having to roll up cables by handand finding tangled cables a con-

stant problem, I requested we pur-chase additional portable reels butfound the budget slashed. The ideaoccurred to me to build somethingsimilar using videotape reels beingthrown away. To hold more cable

we put two of them together, asshown in the photo sequence.

The total cost of building ourhomemade portable reel was about$5 compared with $180 for acommercially sold portable reel. El


A NEW STRENGTH IN RADIO BROADCASTING EQUIPMENTBROAD PRODUCT LINES OFAM AND FM TRANSMITTERSStarting October first,Continental Electronics offersbroadcasters a complete line ofhigh quality AM and FM radiotransmitters, stereo studioconsoles, antenna systems andrelated equipment.

The transmitter product lineincludes AM and FMtransmitters 1 kW thru 50 kW.

This expansion is brought aboutin part by Continental's recentpurchase of Collins BroadcastProducts Group from RockwellInternational Corporation.

NEW FACILITIES

New manufacturing facilitieshave been completed atContinental's plant in Dallas, tohandle the additional productlines.

MARKETING AND FIELDENGINEERING

Continental broadcastequipment, and existing Collinsradio transmitters, can beserviced by a world-wideContinental field support andmarketing group headquarteredin Dallas.

This group has been expandedto meet customer requirementsin a professional manner.

PIONEER AND LEADER INHIGH -POWER RF SYSTEMS

Since its founding in 1946,Continental Electronics haspioneered many advances nhigh -power rf transmitter andsystems technology at powerlevels from kilowatts tomegawatts; for communications,radio broadcast, radar andscientific research applications.

Continental medium wave andshort wave broadcasttransmitters have achieved aworld-wide reputation for qualitycomponents and construction;circuit innovations and unique,simple -lo -operate designs whichproduce superior performance.

STRENGTH YOU CANDEPEND ON

Whatever your radio broadcastneeds may be, Continentaloffers quality equipment andcompetent marketing andengineering support.

For information on Continental broadcastequipment, call (214) 381-7161 or contactBroadcast Marketing Department,Continental Electronics Mfg. Co.,P. 0. Box 270879, Dallas, Texas 75227Telex: 73-398



industry newsVital honored

On September 15, 1980, Vital Industries receivedthe 1979-80 Engineering Achievement Award from theNational Academy of Television Arts and Sciences.

The Emmy was awarded at a dinner held in theRCA Building, New York, NY.

Joint Emmy receivedNBS, together with the Public Broadcasting Service

and the American Broadcasting Company, has beenawarded an Emmy by the Academy of Television Arts& Sciences for outstanding achievement in engineeringdevelopment for the invention and development ofclosed TV captioning for the deaf. Closed captioninghad its roots in a system called TVTime developed byNBS engineers in 1971 as a way to broadcast time andfrequency information on television channels withoutdisturbing regular shows. The system became areality for American viewers last year with thedecision of three major networks-ABC, NBC andPBS-to begin regular broadcasts of closed captionmaterial and the establishment of the NationalCaptioning Institute to do the captioning. Regularbroadcasts of selected programming began lastMarch.

Museum acquires homeOn October 1, 1980, The Texas Broadcast Museum

Inc., moved to the Higginbotham PearstoneBuilding, on the corner of Ross and Market Streets indowntown Dallas.

As funds permit, doors will be opened in January of1981. More than $200,000 worth of antique broadcastequipment, including a working 1938 vintage radiostation are featured.

SMPTE's Conferencesold out

All available booth space for SMPTE's 122ndConference Equipment Exhibit has been taken, it wasannounced by SMPTE Conference vice presidentHarry Teitelbaum, Hollywood Film Co.

The 122nd Technical Conference is set for the NewYork Hilton Hotel in New York City, November 9-14,1980. The exhibit will open Tuesday, November 11, at10 am and run through Thursday at 6 pm.

The 300 -booth exhibit will be occupied by 144companies that represent most of the major manu-facturers and suppliers of professional motion pictureand television equipment. This will be one of theyear's largest shows in which a combination of bothfilm and video equipment is on display side by sideunder one roof. This is also the largest equipmentshow the SMPTE has ever had in New York, theprevious record holder being the last New Yorkexhibit in 1978 where there were 211 booths of equip-ment on display.

The SMPTE Conference will also feature five days ofsessions on new developments in motion picture andtelevision technology and applications.

NEC receives second EmmyNippon Electric Company received its second Emmy

for Outstanding Engineering Achievement at thisyear's award ceremony in September. This year'sEmmy was for NEC's DVE (Digital Video Effects)System. The first Emmy was awarded in 1975 forNEC's Frame Synchronizer.

The DVE System is a creative television productiontool that allows a video frame or picture to bereduced or expanded in size, repositioned, frozen, andotherwise manipulated live or from videotape.

Studio and office complexIn early October the new $2 million KBAK-TV

(Channel 29) studios and office complex officiallyopened in Bakersfield, CA.

The 18,500 -square -foot complex, located on a25 -acre site at Westwind Drive and 19th Street wasdesigned by Millard Archuleta/Eddy, Paynter Associ-ates, AIA, Bakersfield.

Broadcast facilities include two separate and inde-pendent production studios with separate controlfacilities. One studio will be dedicated for theexclusive production of local news and public affairsprogramming. The other will be used primarily forproduction of commercials for advertisers and forlocal public service announcements.

Grants awardedThe Department of Commerce has awarded four

grants worth $1.18 million under a new program tostimulate public service use of satellite communica-tions.

Henry Geller, administrator of the National Tele-communications and Information Administration(NTIA), said the grant awards were "a major step inbringing the benefits of the national investment insatellite technology to the public sector."

The four recipients are:The Appalachian Community Service Network.

ACSN will expand its currently operating satellite/cable network, which offers instructional program-ming primarily in the Appalachian Region, to includenational public service applications. This builds uponpast federal commitment to transfer this activity froma NASA experiment to a commercial operation.

Bell and Howell Company. Bell and Howell, aninternational manufacturer of audio-visual hardware,will develop a Civic Affairs Network linking multiplelocations through satellite earth stations. The networkwill be used by public service organizations andFederal Government agencies for training, education,teleconferencing and community outreach.

The Public Service Satellite Consortium. PSSC is anational toecommunications organization composed ofabout 100 non-profit entities and an experienced staffof communications experts. PSSC's satellite uplink,mobile facility, and other resources will be able to bebetter utilized both by PSSC alone and in collaborativeefforts with other grantees.

American Educational Television Network. AETN isa new for-profit corporation which has reserved spaceon an RCA satellite to transmit specialized continuingeducation programming to members of professionalassociations and employee organizations, helping tomeet state licensing and college credit requirements.

Cooperation among those awarded the grant is anessential element of the awards program, to helpforge an integrated national system of public tele-communications services. The grants will also stimu-late competition in various applications, resulting inthe attraction of venture capital from private industryin the growing public service marketplace.


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Industry news

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CCI announces breakthroughComark Communications has announced that it has

made a significant technical breakthrough concerningthe operating efficiency of UHF broadcast televisiontransmitter systems.

Currently, the average plant efficiency of a UHFtelevision broadcast facility calculates to be 250/0nominal. At best, an overall plant efficiency of 280/0 to300/0 could be achieved using an anode pulser conceptintroduced by the Radio Corporation of America.

The significance of this development to the UHFbroadcast television station owner will be to reducehis power bill by a minimum of $35,000/year as com-pared to the average UHF television broadcast stationoperating today.

Executive praises US innovationsAmerican innovation is keeping this nation tech-

nologically on top despite the aggressive advances ofAsia, Germany and the rest of the Western World,according to RCA group vice president Dr. JamesVollmer.

Vollmer, who is responsible for RCA's GovernmentSystems and Commercial Communications Systemsdivisions, described a range of electronic inventive-ness that may produce some interesting products inthe future; for example:

Electronic interpreters. Advances in semiconductorsand computers will see development of a box no largerthan a camera that will allow people with differentlanguages to communicate freely. An American, forexample, will speak into the box, which will thenrepeat the sentence in another language, allowingperson -to -person communication.

Electronic position locators. At sea, air and space,this is already a reality through radar and othermeans. Vollmer predicted that satellites will be able topick up signals beamed through automobiles andprovide a computer readout that will not only revealwhere you are, but how you can get to where youwant to go.

Home information centers. The television set willprovide as many as 25 different services, ranging fromentertainment to security, two-way communication,library services, financial management, shopping andmore.

Vollmer says he sees the true challenge as decidingwhat we as a society want. "Engineers and scientistscontinue to invent and discover at a fantastic rate.We can do almost anything.

"The real issue is not the task of invention but thatof investing and supporting the inventions," he said,adding, "our commitment to moving new ideas into thedomain of daily use is what's in question."

BE completesnational salary survey

The results are in for Broadcast Engineering'snational salary survey' of the broadcast industry. Thestudy compiled the responses of 1065 personnel whoreceive BE.

Among the results were these: the median salaryfor the group technical management/engineering wasfound to be $23,400 for television and $17,200 forradio; the median raise reported for the past year forthis group was 8.40/o in television and 9.70/0 in radio.

More details are in a complete article beginning onpage 28.


Best Picture:SCOTCH ONE -INCH

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Scotch'is a remstereo trademark of 3M.

For the second year in a row,Scotch® 479 won the award for the bestpicture of the year in a test of one -inch video tapes.

We scored well in all of the twelvecategories tested, but especially wellin the categories that commonly repre-sent picture quality: color dropouts, highfrequency dropouts, chroma noise,signal-to-noise ratio and stop motion

These were scientific, quantitativetests, conducted as you would conductthem yourself, with no room for brandbias. The meters didn't play favorites. Thestandards were the same for everybrand tested. And we tested every brand.

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association news

National Associationof Broadcasters

1771 N Street, NWWashington, DC 20036

Network affiliationThe NAB has told the FCC that it

is beyond its jurisdiction to requirenetworks to affiliate with proposedUHF television stations in northernNew Jersey. The commission isconsidering adopting such a rule forstations in Newton and Asbury Parkif the marketplace lacks the abilityto control the affiliation processthere.

The association stated that "theprogramming offered by the threenational commercial networks pres-

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ently reaches the New Jersey popu-lation with adequacy that willachieve close to 1000/o efficiencywhen present and proposed assign-ments to the southern portion of thestate become operational." NABadded that the relationship betweena network and an affiliated stationis a contractural one and the powerof the federal government to compelparties to enter into contracts wasextremely narrow, if it existed atall.

Presunrise radio serviceThe NAB said that any action

taken by the FCC authorizing pre -sunrise service by Class II daytime -only AM stations should considerboth aspects of NAB's overall day-time radio position: (1) the conver-sion of daytime facilities to fulltimeoperation and (2) not diminishingsignificantly the service provided byother classes of stations.

In its filing, NAB also said anyFCC decision should be made withinthe framework of other pending andproposed proceedings concerningradio allocations and authorizationsand under the review of a jointgovernment -industry advisory com-mittee-the formation of which NABrepeatedly has requested since Feb-ruary 1979.

Wasilewski comments ontrial decision

Vincent Wasilewski issued thefollowing statement on the US Su-preme Court decision saying thatwithout overwhelming reason toclose them, trials must be open tothe press and public. The decisionstemmed from a Virginia murdertrial closed by the trial judgebecause he thought a spectatormight carry information about theproceedings from one witness toanother.

"A badly frayed thread of ourhistory has been restored by theSupreme Court. It has decided thatthere is a clear First Amendmentright of public access to trials for asmany of our citizens as 'choose toattend.'

"In states where camera andmicrophone access to courts isalready granted, America's broad-casters further the Supreme Court'snewly restated goal that 'publicityof a judicial proceeding is a require-ment...'

"In this decision, the court ex-tends an opportunity and an olivebranch to the news media. Bycontrast to old complaints that newscoverage of a case may jeopardize



Facts from Fluke on low-cost DMM's

Our new 41/2 -digit bench/portable:You've never seen anything like it.

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REL: For relative references in thedB mode or offset measurements in allother functions. Lets you store anyinput as a zero value against which allothers are automatically displayed asthe difference. Another timesavingconvenience.

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What you may not know is, for the past few years,we've been quietly doing the same in video! Testing andselecting the leading equipment for performance andreliability. And offering a wide selection of production andpost -production components and packages-on rental,lease and purchase plans with our customary flexibility.

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NAB news

the right to a fair trial, the justicesemphasize the availability of testedand perhaps new alternatives to theexclusion of reporters from court-rooms. Electronic journalists areready to work with judges every-where to assure that neither ourFirst Amendment rights nor theSixth Amendment rights of defen-dants are compromised as wetogether meet our responsibility tokeep our audiences informed aboutthe work of the courts.

"I have to admit some disappoint-ment that the Supreme Court chosenot to reverse its earlier decisionthat pretrial hearings may be closedto the public and news reporters.As many as 900/0 of all criminalcases are disposed of before trial.The court nonetheless has reaf-firmed the value of public aware-ness about what their courts do. Wehope that every trial judge, asked tolock the doors to a pretrial hearing,will thoroughly consider the 'Su-preme Court's new emphasis on thepublic's need to know how justice isdone."

Neuharth to keynoteExecutive Forum III

Allen H. Neuharth, chairman andpresident of Gannett, Rochester,NY, will be the keynote speaker atthe NAB's Executive Forum III. Theinformal seminar for top broadcastexecutives is being held September16-18 at the Sheraton -Fredericks-burg Inn and Conference Center,Fredericksburg, VA. It is designedto examine the broadcasting chal-lenges of the 1980s.

Discussions at the seminar willfocus on programming, advertising,federal regulations, strategic plan-ning, the value of broadcast proper-ties and related business investmentopportunities.

Satellite -to -home broadcastingSaying that the principle of local

broadcasts is central to the nation'stelevision system, the NAB ques-tioned the desirability of directsatellite -to -home broadcasting.

In a filing with the FCC on itsreport on the prospects for addition-al networks, NAB said David Rice'spaper on the subject "devotes notime to discussion of the potentialimpact of DBS on our existingtelevision broadcast system and theaudiences it serves." Without thisinformation, NAB stated, "the com-mission cannot properly and effec-tively exercise its regulatory author-ity on the issue of direct broadcastsatellites."


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National RadioBroadcasters' Association

1705 De Sales Street, NWWashington, DC 20038

Listening patternsA recent survey conducted by

Multiple Systems Analysis for InsideRadio offers suggestions on how alistener selects a favorite radiostation.

Reportedly, 550/0 of men and 460/0of women between the ages of 18-40said they picked their favorite radiostation by just simply scanning thedial. About 300/0 of the women saidthey heard about their favoriteradio station through word-of-mouth, while 220/0 of men listedword-of-mouth.

Only 83/4 of men and 40% ofwomen said they discovered theirfavorite radio station through expo-sure to advertising.

Government -industrycommittee

In a letter to Charles Ferris, FCC

Case History #437

Electronic NewsGathering is one ofthe toughestenvironments amicrophone willever encounter.Every mike we'veseen has com-promised the demand for low handlingnoise, fine audio quality and virtualindestructibility.

Credit the NBC Electronic JournalismDepartment; Operations and En-gineering in New York for putting theElectro-Voice D056 shock -mountedomni in the field. Although originallydesigned as an on -camera enter-tainment and MC's microphone. NBCfound the D056 to be the micro-phone that provides an audio signalcommensurate with video in real -lifecrisis situations. In these situationsaudio often takes a back seat to video.

Electro-VoiceD056

Shock -MountedOmnidirectional

Microphone

resulting in a finalproduct that doesn'taccurately reflectthe broadcaster'sprofessional stan-dards. NBC dis-covered that theD056 takes the

pushes, the shoves, the rubs andfinger taps in stride. And whenhandling really gets rough, the D056'sunique internal shock mount virtuallyeliminates the bell -like clang trans-mitted by other shock -mounted mikes.

Congratulations to the NBC ElectronicJournalism Department in New YorkYou found the solution -- the D056.

For an in-depth description of thisand other case histories, get on theElectro-Voice "Mike Facts" mailinglist. Write on your letterhead toMike Facts. clo Electro-Voice.600 Cecil Street, Buchanan, MI 49107.

Electrolioice

chairman, NRBA executive vicepresident Abe Voron has repeatedNRBA's request for the creation of ajoint government -industry committeeto (1) study the effects currentlypending proposals and new technol-ogy will have upon radio, and (2)design a master plan for radio'sorderly growth.

Cross -ownership billCross -ownership bill HR -6228

went through the House Communi-cations Subcommittee July 1. Thebill, which was left practicallyunaltered, would codify the FCC'scross -ownership rules and wouldeliminate a licensee's other mediaholdings as an issue in renewalchallenges, thereby grandfatheringexisting cross -ownerships. HR -6228would also prohibit the FCC fromconsidering ownership and manage-ment integration in renewals.

NRBA supported the portion ofthe bill prohibiting the FCC fromconsidering a licensee's otherbroadcast holdings and managementintegration in license renewal pro-ceedings, but strongly objected tothe second portion of the bill, whichwould codify the FCC's newspaper -broadcast cross -ownership guide-lines.

FM grows againof the radio

audience has jumped to a new highof 551/4 from 52.4°/o, according to aCBS Radio analysis of the RADAR -21survey.

As expected, FM continues tolead the way during the weekendnightime hours of 7-12. FM's reportcard shows a 63.70/0 audience sharefor Saturday night and 63.50/o forSunday night. The lowest FM sharewas the Monday -Friday morningdrive slot, with a 460/0 share.

Radio -only legislationFollowing a conference -call meet-

ing of NRBA directors, Sis Kaplan,president, sent telegrams to mem-bers of the Senate Commerce Com-mittee requesting that the radioprovisions be withdrawn from theproposed compromise communica-tions bill S-2827, in favor of radio -only legislation.

Though markup of the bill hasbeen delayed, NRBA pointed out tocommittee members that "radio andtelevision are so different as torequire separate legislation." Thenew bill, intended to amend theCommunications Act of 1934, "doesnot take into consideration the greatdifferences that exist between radioand television" and virtually treatsthem as one entity. 0



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The Beyer MCE 5 is the world's smallest electret condenser and providestrue broadcast -quality audio from a 7 x 23 mm. cylinder weighing Just 6.5 grams.It has wide frequency response, but is immune to most body noises. And you can hide italmost anywhere and connect it to a cable or a wireless transmitter.

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Circle (16) on Reply CardOctober 1980 Broadcast Engineering 23

Automatic power level control and VSWRprotection of modern television transmitters

Part IIBy R.M. Unetich and D.D. Harbert, RCC, Meadow Lands, PA

Transistor protection systemsProtection against excessive drive

due to an amplifier failure. Thetransistor normally operates in theclosed loop mode. Therefore, thefailure of one of the parallel 400Wamplifiers results in an increase indrive to the remaining amplifiers inan effort to maintain full outputpower. This could cause the circuitbreakers to trip, thus completelyshutting down the driver. Thisproblem is addressed by detectingthe failure of one, two or more thantwo 400W amplifiers and thenmodifying the reference voltage inthe power control circuitry to keepthe remaining good modules operat-ing at the original level.

A single fault causes a poweroutput reduction to 500/0 of theoriginal; two faults cause a reduc-tion to 250/0; and more than twofaults will completely remove thedrive. Each of the 400W moduleshas a fault sensing circuit thatcontinuously compares the outputRF level with the input RF level. Thecircuit is adjusted so that a 100/0drop in output voltage is declared afault. The determination of a fault isfollowed by the removal of bias tothe module and a fault signal to thefault decoder portion of the controlcircuit. Once a fault has occurred,a latch is set and the moduleremains in the fault status untilreset. In the fault decoder, standardlogic techniques are used to decodethe number of faults.

The only requirement on thespeed of the fault decoder circuitryis that a fault be detected, decodedand the power reference voltagemodified for the new power levelbefore the ALC system appliesexcessive drive to the remaininggood amplifiers. A response time of10 to 20ms is sufficient.

Protection against excessive drivedue to an ALC loop failure. Exces-sive drive could also be applied tothe amplifiers by misadjusting the

power level while in the manualmode, by a component failure in theprimary ALC loop or by someoneaccidentally removing the forwardcoupler cable from the output direc-tional coupler. To prevent such anoccurrence from possibly damagingthe amplifiers or tripping the circuitbreakers, a secondary ALC loop isused to set and hold the drivepower at a safe level once a presetmaximum limit has been exceeded.

The secondary ALC loop is neededto protect against failure of theprimary loop in a minimum attenua-tion condition. An RF sample fromthe predriver is peak -detected thencompared to a fixed, but adjustabledc level. When the peak detectoroutput exceeds the fixed level, theoverdrive latch is set, which causesthe solid-state DPDT switch S1A andS1B to transfer from the normal tothe overdrive position. In the over-drive position, a fixed dc voltage isapplied to the primary ALC attenua-tor (atten. A), and the output fromthe overdrive operational amplifieris applied to the overdrive attenua-tor (atten. B). Thus, the transmitteris operating with a secondary closedloop system that maintains theoutput of the predriver at a fixed,safe, preset level. The overdrivemode is operative when the primaryALC loop is in either the closed loopor manual mode.

Protection against a power supplyfailure. The transistor amplifiersare protected against an overvoltagecaused by a power supply failure byusing an overvoltage protection cir-cuit at the power supply output.Overvoltage protection circuits arecommonplace; however, in a high -power solid-state amplifier, theirdesign is a difficult problem. As anexample, the overvoltage circuit inthe solid-state driver has to apply ashort to the output of a powersupply with a 200A output capabilityand discharge a 0.6F bank of filtercapacitors before the output voltage

can rise above a damaging level. Aresponse time of 2ms is required.

Drive VSWR protection. The driv-er VSWR protection signal is de-rived from a peak -detected sampleof the reflected power at the driveroutput. This signal, after passingthrough a selection gate, is com-pared with a fixed VSWR shutdownvoltage in the control circuit. Whenthe VSWR signal equals the shut-down reference, the comparatoroutput goes high and immediatelyturns on transistor switches Qi andQ2 through CR1; this action shortsout the control voltage to the pindiode attenuators, causing them togo to maximum attenuation, thusshutting off the RF drive within 5 to1011 s after the comparator outputgoes high.

The response time from the peakdetector output to the comparatoroutput is 10 to 15p S, which gives atotal of 20 to 301.1s VSWR shutdowntime from the peak detector input tothe attenuator output. When theVSWR shutdown comparator outputgoes high, the 10ms timer is trig-gered and its output holds theattenuator off through CR2 for10ms. At the end of the 10msperiod, RF drive is again applied.

If the fault has cleared, theoutput will attain its previous valueand the system will resume itsnormal operation. If the fault hasnot cleared, the drive is removedonce again for 10ms. If three faultsoccur within 15 seconds of the firstfault, a counter generates a faultsignal that keeps transistor switchesQ1 and Q2 turned on and sends aVSWR fault signal to the powershutdown circuitry in the primaryALC loop. A fault signal is also sentto the PA control circuit thatremoves the plate and screen vol-tages. When the 10ms timer istriggered by the first VSWR fault,its output triggers a 15 secondtimer.

If one or two faults occur before


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See us at SMPTE booth numbers 185 and 188 Clircle (18) on Reply Card October 1980 Broadcast Enrenearing 25

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Power level

the timer times out, a reset pulse isgenerated that sets the counterback to zero count. If three faultsare counted before the end of the 15second period, the internal resetpulse from the 15 second timer isdisabled and the circuit has to bereset manually. The VSWR shut-down reference is normally set for a10dB return loss at 1000/0 power.

VSWR protection for the tubestage. The TTG Series transmittersuse the VSWR protection circuitrydeveloped for the solid-state driverto protect the tube stage againstsuddenly occurring VSWR faults.The protection signal is obtainedfrom a directional coupler and peakdetector located immediately afterthe tube amplifier/cavity to providemaximum protection from failure ofany line section, filter or load forthe tube. The peak detector outputis then passed through a selectiongate whose outut is representativeof the reflected power at either thedriver output or the PA output,whichever is the highest. Thus, aVSWR fault shutdown will occur fora VSWR fault at either the driveroutput or the PA output.

There are some VSWR conditionssuch as antenna icing, which resultin an increasing VSWR. It is best inthis situation to maintain an outputsignal as long as possible withoutjeopardizing the PA or transmissionline components. This is accom-plished by applying the output of theVSWR turndown and metering peakdetector, located immediately beforethe load element, to the referencemodification portion of the ALCcircuitry. When the VSWR in-creases to an adjustable thresholdof 1.5:1, the output power is cut byreducing the power reference vol-tage. As the VSWR deteriorates, theforward power is further reduceduntil the magnitude of the reflectedpower at the PA output exceeds theVSWR shutdown threshold.

SummaryThe reliability of modern closed

loop television transmitter systemscan be increased, maintenancecosts reduced and downtime mini-mized by using solid-state RF de-vices up to the final high -poweramplifier stage if: (1) RF drive isremoved within 20 to 30p.s after theoccurrence of a VSWR fault; and (2)protection circuitry is provided toprevent the application of excessivedrive and excessive power supplyvoltage and/or collector current inthe transistor stages.


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Broadcast salariesA national survey

By Joan Jackson, associate editor, and Kevin Kious, managing editor

One of the constants of anybusiness is that employees arealways aware of and concernedabout their salaries.

To learn more about salary struc-tures in the broadcast field and toinform its readers about thosestructures, Broadcast Engineeringrecently conducted an extensivestudy of salaries in broadcasting.

The study methodInformation for this study is based

on responses to 3000 questionnairesmailed August 8, 1980, to radio andTV station personnel who receiveBE. The recipients were selectedrandomly (on an nth name basis) bya computer. Respondents wereasked to report on their title,salary, salary increase for the past

Note: Information for this survey was compiledBy Kate Smith, market researcher, IntertecPublishing Corp.

year, type of facility and theirfacility's market.

The study was closed on August26, 1980, at which time 1065questionnaires had been received.

ResponseThe return rate for the question-

naires was 350/0. Of those responses540/0 were from radio stations and460/0 were from TV stations. Thetwo groups were further brokendown into the categories of corpor-ate management, operations man-agement and technical manage-ment/engineering, which had thehighest rate of response.

Job titles for the groups were:corporate management-president,owner, partner, chairman of theboard, vice president and generalmanager; operations management-manager/director, station manager,production manager and programmanager; technical management/

engineering-technical director/manager, chief engineer and engi-neer. The greatest number of re-sponses for television came fromthose with the titles vice president,production manager and engineer.Radio's highest responses came frompersons with the titles generalmanager, operations manager/di-rector and chief engineer.

ResultsThe study showed that the median

salary for corporate management intelevision is $50,000 or more; 59.11/4of the respondents fell into thiscategory. The median for operationsmanagement is $22,300; the largestnumber of responses fell into thecategory $25,000-$34,999. The med-ian for technical management/engi-neering was $23,400; the largestnumber of responses for this groupalso came from the $25,000-$34,999category.


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Circle (23) on Reply Cerd

National salary survey

Radio responses showed a medianof $25,500 for corporate manage-ment; the largest number of re-sponses (26.101o) came from the$25,000-$34,999 group. The opera-tions management median was$16,250; 34.80/0 of the respondents,the largest grouping, reported sala-ries of $10,000-$14,999. The medianfor technical management/engineer-ing was $17,200; the greatest re-sponse (23.90/0) came from thosereporting salaries in the $15,000-$19,999 range.

From the study a further break-down was made centering on thetechnical management/engineeringgroup. Salaries were tabulated bystation market: top 50, top 100 andbelow top 100. The highest salariesfor television and radio fell into thetop 50 category. For television thelowest median salary was in the top100; for radio the lowest salary wasin the below top 100 grouping.

Salary increasesA large percentage of television

respondents reported a salary in-crease for the past year. Moretechnical management/engineering

respondents (89.80/0) reported re-ceiving raises than the two othergroups. The figure was 72.70/o forcorporate management and 84.91/4for operations management. Thelargest raises were reported byoperations management and thesmallest by technical management/engineering. For all three groups intelevision, the largest percentage ofrespondents reported raises in therange of 70/0-90/o.

The technican management/engi-neering median was 8.40/o. Thefigure was 9.40/0 for corporatemanagement and 10.70/o for opera-tions management.

The salary increase percentageswere lower for radio than fortelevision. Operations managementand technical management/engi-neering reported about 30 percen-tage points higher incidence ofraises in the past year than corpo-rate management.

The percentages of radio respon-dents were: corporate management,41.3°/o; operations management,73.31/4; and technical management/engineering, 66.81/4. Medians forradio were close for corporate

Television

Salary Level Corp. Mgt. Opr. Mgt. Tech/Eng.

Less than $10,000 1.9% 2.0%$10,000 to $14,999 17.0 11.7$15,000 to $19,999 2.3 20.8 18.8$20,000 to $24,999 22.6 25.7$25,000 to $34,999 13.6 24.5 28.1$35,000 to $49,999 25.0 13.2 11.7$50,000 or more 59.1 2.0

Radio

Salary Level Corp Mgt. Opr. Mgt. Tech/Eng.

Less than $10,000 5.5% 9.3% 17.0%$10,000-$14,999 6.9 34.8 22.4$15,000-$19,999 20.2 23.3 23.9$20,000-$24,999 16.1 16.3 18.5$25,000-$34,999 26.1 14.0 14.8$35,000-$49,999 11.9 2.3 3.0$50,000 or more 13.3 .4

Respondents comment

Comments on compensationtrends in the broadcast industry:

Where unions are the case fortechnical staff, compensation ishigher for them than for themanagerial staff. This to me isnot due compensation for thosewho bear responsibility.Program producerTop 50 TV station

Being in a major market and amember of a labor union are thetwo main factors of at leastcontinued cost of living payraises. Also, the continuedfinancial success of the stationis important. When the salarylevel in broadcasting isconsidered against working anyhours of day or night, plusholidays and weekends too, it'sanyone's guess whatcompensation is correct whencompared to other industries.EngineerTop 50 radio station

Compensation levels in middleand major markets are soinadequate (generally speaking)so as to be responsible for ashortage of competentengineers. You need an engineerto run radio stations, but lowpaying employers gettechnicians because they areunwilling to pay for an engineer.Chief engineerTop 50 radio station

The broadcast industry is notkeeping pace with otherindustries, but if you enjoy yourwork and the freedom andresponsibility that go with it,it can't be beat.Chief engineerTop 50 radio station

In lieu of salary, I have beenoffered significant bonuses foraccomplishing certainobjectives. I suspect othermanagers have experiencedsimilar treatment.General managerBelow top 100 radio station


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(120/o) and operations management(11.90/0). The technical manage-ment/engineering median was 9.70/o.The highest responses for corporatemanagement and operations man -

If you want to make a million,stay away from broadcasting.Operations manager/directorBelow top 100 radio station

Compensation trends in thismarket, which falls just belowthe top 100, is certainly notkeeping pace with inflation.The way most engineersimprove their salary is bymoving from one station toanother. There is also noincentive or additionalcompensation for improvingone's skills. Most stations feelthat the less paid for anengineer, the better.Chief engineerBelow top 100 radio station

Compensation trends,specifically in non -sales areas,are inadequate to attractcompetent, career -mindedprofessionals, especially insmall and medium markets. Weare continually complainingabout the quality of youngpeople entering the industry, butwe refuse to offer the type ofcompensation packagesnecessary to attract the bestminds to our industry.PresidentBelow top 100 radio station

Salaries seem to be rising fasterthan the Consumer Price Index(for technical people).Engineering managerTop 50 TV station

Broadcasting salaries are notkeeping pace with cost of living.Compared to cost of living,salary here has fallen behind30%-40% in the past 10 years.EngineerTop 50 TV station

Engineering outlook not sogood. Automation takes theplace of many and managementfails to see the need for them.EngineerTop 50 TV station

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television respondents in the top 50group was 8.2°/o; the top 100 had amedian of 8.3°/o and below top 100had 9.3°/o. The highest number ofresponses for all three markets fellin the 50/0-90/0 category. For radiothe median for the top 50 was 9.9°/o;both the top 100 and below top 100had medians of 9.6°/o. The majorityof responses for these markets alsofell in the 50/0-90/0 category.

Company auto instead of cash.Chief engineerBelow top 100 station

Not keeping up with inflation.We are losing employees tolarger markets.Chief engineerBelow top 100 TV station

There is the same escalation ofcompensation in television as inother business though, becauseof a scarcity of qualified people,some positions are more sothan justified, based oncapabilities. In other cases,because of availability ofqualified people, some are notearning what they should.Vice presidentBelow top 100 TV station

Salaries in broadcasting arehighly inflated with no end insight. Basic unskilledtechnicians at the network levelcan make, with overtime, inexcess of $50,000 per year. Andon -air talent makes in excess of$100,000 per year.Technical director/managerTop 50 TV station

Due to the FCC dropping therequirement for a license forengineers, I see salary increasesshrinking because stations arehiring people for $3.50 an hourto try to do engineering work inTV stations.EngineerTop 50 TV station


CMX SETS ITS MARKON FAST, EASY EDITING

Watch Our SMART KEYS Give You The Edge.Imagine a revolutionary new editor with a set of

function keys that actually run along the edge of theCRT with the CRT itself labeling thekeys. Press the right key for thefunction you want it to perform;then watch it take you through theediting process. Gone forever isthe editor's search for a small key-cap legend on a complex keyboard.The editor/machine interface isreduced to the point of transparency.We call these keys SMART KEYS.TMWe call our new editor THE EDGE.

The Standard -SetterCMX is the company that set the standard for computer -

assisted editing over 11 years ago in broadcasting andteleproduction. We made video tape editing a practicalart. Today we're still the standard.

Now we've taken the best and newest in microcomputertechnology and developed an editor that is priced to bringtruly sophisticated editing to everyone involved in post -production.

We didn't stop being smart at the function keys. We'vereduced the operating mode buttons to three- MOTION,EDIT and MARKS.

The MOTION mode, you guessed it, controls the motionof the VTR's. Teamed up with our REEL MOTIONCONTROLS you get a combination that's hard to beat.The motion controls are a joy to use and have the "feel"of "reels" along with a Hold function that permits viewingof tape at any speed.

The EDIT mode describes the type of edit-video.audio 1, audio 2, transition type, split, and two generalpurpose interfaces (GPI's) for control of externalautomatic switchers, character generators,digital video effects and still stores.

A super CMX exclusive lets you enterthe location of splits and GPI eventsfrom audio -only or video contentwithout the use of numbers. Thismark function, the same as is usedto select edit points, can be performed"on the fly" with user programmablereaction time still under CMX's ReelMotion Control.

"Orrox Corporation

The MARKS modeallows full access to timecode numbers includingset, trim, backtime, andtransfer when you needthem, yet another CMXexclusive.

Fastest EditsFor maximum speed THE EDGE does open-ended

edits automatically when you set "in" points and pressRECORD. By pressing ALL -STOP you can end the editwith a clean "out" point. The Reel Motion Controls andMARK IN/OUT buttons are then active to select the next"in" points. The speed that these features provide isa must in today's ENG world and whenever maximumthroughput is required of an editing system.

Along with Replay and Preview THE EDGE hasSource -only and Record -only previews. To meet yourcritical speed requirements only THE EDGE providesthese previews for Out -Point Only as well as Full -Edit.

Other features you'd expect from the leader includea CMX industry -standard Edit Decision List, mixing ofSMPTE time code and control track (pulse count) as wellas 1", 3/4" and 1/2" formats, built-in dissolve/fade, andpreview switcher.

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SMPTE gets ready for major conference

By Bill Rhodes, editorial director

November 9-14, 1980 New York Hilton 25,000 square feet of exhibit space

(sold out) 300 booths Record attendance expected

SMPTE registration hours:Sunday Noon to 5 pmMonday 8 am to 5 pmTuesday 8 am to 5 pmWednesday 8 am to 5 pmThursday 8 am to 5 pmFriday 8 am to Noon

SMPTE exhibit hours:Tuesday 10 am to 8 pmWednesday 10 am to 5 pmThursday 10 am to 6 pm

According to Harry Teitelbaum,SMPTE conference vice president,the 122nd Technical Conference andEquipment Exhibit for the Society ofMotion Picture & Television Engi-neers has sold all its availableexhibit space and may set anattendance record.

The technical conference is slatedfor November 9-14 at the New YorkHilton Hotel in New York City;exhibits are scheduled to open at 10am Tuesday, November 11, and runthrough 6 pm Thursday, November13. The split scheduling will permitattendance at technical sessionsand the visiting of exhibitor boothswith a minimum of conflict.

The 300 -booth exhibit will beoccupied by 144 companies repre-senting most of the major manufac-turers and suppliers of professionalmotion picture and television equip-ment. This will be one of the year'slargest shows in which a combina-tion of both film and video equip-ment is on display under one roof.This is also the largest equipmentshow SMPTE has ever had in NewYork, the previous record holderbeing the last New York exhibit in1978 at which there were 211booths.

In addition to the exhibit, theconference will feature five days ofsessions on new developments intelevision and motion picture tech-nology and applications. Many so-cial activities are planned, includinga Sunday evening social event, aMonday awards luncheon, Wednes-day evening cocktail party andbanquet, and a full week of activi-ties for spouses.

The conference opening willstress new television technology,including the vitaphone story. TheMonday afternoon session will fea-ture an in-depth review of thehistory of British television from itsearliest stages to the present day,primarily in terms of evolution ofthe technology, the art and craft ofprogram making, and the culture.Comparisons may be drawn betweenthe British and US patterns ofdevelopment and an explanationoffered for the differences in thestyle of output presented to viewersin the two countries.

During past SMPTE meetings,broadcasters, in particular, haveexpressed serious concern about themaintenance of the new technologyequipment being developed-espec-ially the complex digital systems. Inresponse to this expressed concern,SMPTE is scheduling an afternoonsession on Tuesday treating prob-lems of maintenance. Although it isnot directed to any specific area orindustry, topics being consideredinclude: equipment design, plantdesign, diagnostic techniques, careand training of good maintenancepersonnel, documentation and ven-dor support, and a panel discussion.

The Wednesday morning sessionwill offer a look at production andpost production for television. Top-ics being considered include: devel-opment of black and white and colortelevision up to the NTSC stan-dards: The work and the committees;

videotape post production 1980:equipment, operation and proce-dures; the advanced videotape edit-ing/dubbing system in NHK; alightweight portable broadcast cam-era with optional, digital setupcontrol; the cost of camera mobility:Part 1-conventional cameras; Part2-lightweight cameras; recent ad-vances in the fast charging ofsealed nickel cadmium batteries; anew approach to space ships andaerial scenes in television produc-tions; a primer on vidicon-typepickup tubes; progress report oncaptioning for the deaf; and currentdevelopments in camera tubes.

On Thursday, the morning sessiondevoted to lighting and sound shouldprove of equal interest to engineersin broadcasting and motion pictureproductions. Current topics beingconsidered include: the developmentof stereo magnetic recording forfilm; a procedure for optimizingphotographic sound recording sys-tem; the historical development ofcinema architecture and its acousti-cal effect on filmsound recording;the emergence of cinematographiclighting techniques from those ofstill photography; high power singleended discharge lamps for filmlighting: an innovative approach toHMI fixture design; digital audiotechnology: today and tomorrow;and fixtures for tungsten halogenlights.

The Thursday afternoon program,devoted to videotape editing, takes ahistorical look at television andpresents some of the latest video-tape equipment. Specific topics be-ing considered are: the rise ofmechanical television, 1901-1930,

the development of the videotaperecorder, the IVC 1-11: a different

Exhibitors at SMPTE Fall Exhibit

AATON Came., EEV Neurnade ProductsAcmade Intl/Eastern Editing Eigen Video NL Film ProductsAdds ELMO Mfg. Norton AssociatesAgfa-GavaenAllen Products

FamsehFrauolini Electronic.

NuradNylons Electronics

American Data Fujinon Optical OSRAMAmperes ElectronicAmpex

Rua Photo Film USAGeneral Electric

Osbert)/Pace Intl

AntonlBauer. Goldberg (.113R /Ciro) PanasonicArriflexArvin /Echo Science

Alan Gordon EnterprisesGrass Valley Group

Ped-FixPeterson Enterprises

ASACA/ShlbasokuAudio Kinetics (UK) Ltd.

G. SplicerHazeltine

Philips BroadcastPlastic Reel

Belden Communications Karl Heitz Rank CintelBell E. Howell Hitachi Denshi America Rank PrecisionBerkey Colortran Hollywood Film RCA BroadcastBogen Photo Houston Fearless 76 RecortecBoles (U.S.A.) lk.egarni Electronics Research TechnologyBrumac industries Image Devices RF TechnologyCamera MartCanon, U.S.A.

Image TransformIndustrial Sciences (ISI)

Ronde a SchwarzROWS Labs.

CECO CommunicationsCentral Dynamics

U.S. JVCII B Systems

SERASigma Film Equip.

Century Precision Cine/OpticsCetec Vega

Klieg] BrothersKIM Associates

SkotelSmith -Victor

Chyron Telesysterns LaVepti Machine Works Snook (ROTE%)Cinema ProductsOnemills

LanceLoaner -Smith

SonySoremec-Eciair, U.S.A.

Gine 60Clnetron Computer Systems

Ustec TV Equipmenttowel -Light Mfg.

SteenbackStrand Century

Clear-Com Intercom Systems LIM Sylvania Lighting/GTECM% Systerns/OrroxCoherent Communications

L -W InternationalMM Editing Systems

SymcoSystem Concepts

Compact Video SystemsC.E.I.

Magnasync/ MoviolaMagneTech Electronic

TV Equipment Assoc.Tektronix

Comprehensive Service AN Marconi Electronics Tele-OneComprehensive Video Supply Matthews Studio Equipment TelescrIptControl VideoConvergence

Merlin Engineering WorksMicro Consult. /Ouantel

3M - Mincom DieTiffen Mfg.

Crement, S.A./PEP Microtirne Toshiba IntlDatametricsDatatron

Microwave Assoc. Comm.Mole -Richardson

Union ConnectorUni-Set

Digital Visteo SystemsDolby Laboratories

M.P. EnterprisesMotorola Comm. & Elec.

Utah ScientificVicteutek

Dynasciences Sloylecarn Corp. of Amer. WeathermationEastman KodakEdutron

Multi -Track MagneticsNagra Magnetic Recorders

~sledZelIan Enterprises

EEG Enterprises NEC America


THE STUDER 069.A STUDIO IN A SUITCASE.

Wherever you're on the spot, theStuder 069 gives you everything youneed. Fast. Mixer, limiter, telephoneand broadcast line feeds, mikes, ca-bles, monitor phones. All in a singlesuitcase or permanently parked inyour mobile van. A two-minule set-up for sports coverage,interviews,

fast -breaking stones. Without.jury-rigged lash -ups between multipleunits to cause "technical difficulties."

The unique 069 Commentator Boxgives you a single -run connection fortwo mikes, phones, or mike/phone

combos, with hill talkback and sepa-rate cue facilities. The mixer unitprovides the engineer with com-plete -telephone inititate/mon-

itor facilities (local battery orcentral office powered) for dial

system, balanced program line andradio link feeds. You can run the 069from an AC power line, self-contained

NiCads, or a 12V car battery for com-plete operating freedom.

Two mike/line inputs and a separaterecorder feed are individually assign-able to either or both output channels,and alll three have selectable low-cutand presence EQ. Four 6 -way monitorswitches and volume controls give bothengineer and commentator the exactsignal they need to hear in each ear.

The 069 is Studer's complete go -anywhere, be- prepared - for - anythinganswer for broadcast remotes. For afull descriptive brochure, contactStuder Revox directly.

4CJIo)Sr3 REVOXStuder Revox America, Inc.

1425 Elm Hill PikeNashville, TN 37210, (615) 254-5651

Offices: LA (213) 780-4234; NY (212) 255-4462


Video:

It's timefor a new approach.

IntroducingJVC's TapeHandlers


JVC has taken a new look at3/4" Video Cassette Recording,with an eye for what you'vebeen looking for.

Stability. Reliability.Gentle tape handling.Economy.

Take a look inside one of JVC'snew TapeHandlers. You'll beamazed at what you don't see.

No pulleys.No belts.No idlers.

Instead, Direct Drive reelservos that keep tape tensionconstant for smooth and stabletape transport, reliable tapeshuttling.

A simplified tape threadingmechanism for gentle tapehandling.

Four brushless motors thatdirectly drive the capstan anddrum servos to give stabilityand reliability, reduce lumin-ance jitter to less than ± 5microseconds.

A die-cast aluminum chassisto give strength, promote easyinterchangeability, keep weightdown.

NOT JUST NEWMECHANICAL DESIGN.NEW ELECTRONICS.JVC's TapeHandlers not onlyhave a new way to handle yourtape, they have new elec-tronics, too.

FM -FM direct dubbing capa-bility for multi -generation dupli-cation.

Microprocessor -based con-trol logic for reliability and easeof operation.

Extremely stable horizontalphase lock.

Fully electronic tape count-ing and timing, with a brilliantfluorescent display.

UTMOST VERSATILITY.SIX UNITS.BROAD INTERFACINGCAPABILITY.JVC's heavy-duty Tape -Handlers have been designedto have wider use than just pro-fessional video productions.

With their ruggedness, thesix separate units can be usedin varying combinations byanyone involved in video. Andthey interface without modifi-cation with most other micro-processor -based editing unitson the market.

These units are just a start.Other fully compatible prod-ucts, complementary in func-tion, are soon to follow fromJVC. The advances incor-porated in the TapeHandlersare too important not to beextended to all who want andneed to use video, at any level.

CR-8200U TapeHandler:THE NEW -GENERATIONRECORDER/EDITOR.The leader of JVC's Tape -Handler Series is the all-pur-pose CR-8200U Recorder/Edi-tor. A built-in rotary erase headand blanking switcher make it

RM-88URM-70U

CR-8200U

CR-6600U

CR-5500U

easy to perform automaticassemble (back space) editingand split insert editong-a mustfor professional quality videoproductions. The new FM -FMdubbing system transfers thechroma and luminance signalsin FM form, to cut deteriorationsignificantly. Capstan servo, ofcourse, for top editing perfor-mance. Random access capa-bility. Direct mode change with-out going through "Stop," toallow full remote control. Sub -carrier and external sync capa-bility for use with Time BaseCorrectors. And, naturally, thenew TapeHandler Direct Drivereel servo system to keep tapetension constant in all modes.

The CR-8200U TapeHandleris the ideal core unit aroundwhich to build a fully automaticelectronic editing system

CR-6600U TapeHandler:THE FULL -FUNCTIONRECORDER WITHASSEMBLE -EDITINGCAPABILITY.The CR-6600U is the video-tape recorder designed for thebusy studio. Its rugged con-struction and gentle tape han-dling give you the kind of reli-ability you need whenworkloads are heavy. The built-in automatic pre -roll mecha-nism and blanking switcher letyou do assemble editing usingonly the record and pause but-tons. FM -FM dubbing makes itperfect as a master VTR formulti -generation duping.Microprocessor -based logicallows full remote control. Twoaudio level control meters.External sync capability. TBCconnections.

This is the recorder you'llvalue for its quality reliability,versatility.

CP-5500U TapeHandler:THE COST-EFFICIENTPLAYER WITHON -AIR QUALITY.Want a low-cost player foistable and reliable on -air play-back? That's the CP-5500U. Oruse it with the CR-8200U and

an automatic editing controlunit and you have a superb,fully automatic electronic edit-ing system. Or take advantageof its FM -FM duping capabilityand use it as a companion tothe CR-6600U.

It's a TapeHandler, with thestable tape transport thatmakes it perfect for these criti-cal applications.

MICROPROCESSOR -BASED EDITINGREMOTE CONTROLUNITS.JVC offers you a choice ofcompact control units: theeasy -to -operate RM-88U forprecise timing of machinefunctions, the low-cost RM-82U, and the RM-70U fullremote control unit with shut-tle -search function. All arebased on a full logic circuitusing a microprocessor. And allhave JVC's new SOFTOUCHshuttle -search control for fastand accurate location of edit-ing points. Turning the rotarydial varies the tape playbackspeed continuously from still to5 times normal, in both forwardand reverse. When the desiredspeed is reached, just let go,and it remains locked at thatspeed. When you changemodes, the dial automaticallyreturns to the still position. Nolocking latches or pulling ofknobs when you change fromstill to playback speed.

GET ALL THE DETAILSCall your JVC Dealer. He'll beglad to demonstrate the Tape -Handlers for you and let you trythem for yourselves. Or, if youprefer to read about them first,send for our detailed catalogthat spells out their specifica-tions.

Write US JVC Corp.,41 Slater Drive, Elmwood Park,New Jersey 07407

Phone toll free800-821-7300

Ext. 7005(In Missouri: 800-892-7655,

Ext. 7005).

Your choice.

N°wJVC®US JVC CORP



The SMPTE Technical ProgramSunday, November 9Registration, afternoonEntertainment, eveningMonday, November 10Conference opening, morningAwards luncheon, noonThe History of British Television,afternoonTuesday, November 11Motion Picture Film Production,morningFellows luncheon, noonProblems of maintenance, afternoonWednesday, November 12Television production and postproduction, morningMotion picture laboratorytechnology, afternoonBanquet, eveningThursday, November 13Lighting and sound for televisionand motion pictures, morningVideotape recording, afternoonFriday, November 14Computer graphics, morning

The SMPTE technical program isstill being formulated as BE goes topress.

The above listing shows its earlystructure, and a comprehensiveprogram booklet will be distributedto those at the show.

SMPTEapproach; development of a highband U-Matic cassette recorder;design of a TV monitor: a new andaccurate system for lining up systemtiming and sub -carrier phase; video -scope: an accurate method forcertifying, timing and analysis ofRS -170A systems; the new RCAone -inch Type C helical VTR; andautomated enhancement for porta-ble ENG recorders.

The Friday morning session oncomputer graphics and charactergenerators will be of special interestto those from the television industryattending the show. Also, thoseattending this session can lookforward to seeing some interestingsegments displayed on monitorsstrategically placed around the ses-sion meeting room.

Awards luncheonSMPTE's annual conference

luncheon is being held on Monday,November 10,- and will feature thepresentation of SMPTE awards rec-ognizing outstanding achievementsin motion pictures and television,and service to the society.

SMPTE banquetOn Wednesday evening, Novem-

ber 12, SMPTE will hold its annualbanquet, cocktail party and dancein the Grand Ballroom of the HiltonHotel. Companies wishing to reservetables at the banquet should get intouch with Kurt Wulliman, 3M Co.,Photographic Prod. Div., 321 W 44thSt., New York, NY 10036.Tables arebeing reserved on a first -come,first -served basis.

Committee meetingsPart of the SMPTE conference

meetings are engineering committeesthat address topics related to televi-sion and motion picture engineering.Details will not be available untilthe convention starts. Attendance atthese meetings is tightly controlledand space is limited. Persons con-cerned about specific sessions cancheck with SMPTE and arrange tohave their views considered on keyissues or to obtain an invitation tosit in on a session as an observer.

Further details about the 122ndSMPTE Technical Conference andEquipment Exhibit may be obtaineddirectly from: Society of MotionPicture and Television Engineers,862 Scarsdale Ave., Scarsdale, NY10583. In case you can't make it tothis year's show, BE will cover someof the television highlights in itsJanuary 1981 issue.

e, rjA f He's been our hero for a long time, that father of modem innovation, Benjamin Franklin.

Through his example and Moseley's dedication to broadcasting we've built a reputation for beingfirst in the industry. Moseley finds itself jumping into the forefront once again with a new line ofaudio processing equipment, engineered with the quality today's listeners demand.

The TAL-320 AM Audio Limiter bungs AM broadcast sound to the quality level it de-serves. With the advent of AM stereo, Moseley offers a product that maximizes the AM sta-tion's modulation while minimizing those undesirable by-products commonly associatedwith audio processing. The TAL-320 does just that.

Moseley's TFL-280B FM Audio Limiter, in service aroundthe world, allows TV and FM stations loudness and claritywithout distortion caused by old-fashioned clippers. Built-in 15 kHz audio lowpass filtering provides protection to thepilot and subchannels.

The TGR-340 Audio Gain Rider complements theselimiters perfectly by subtly riding gain on the programline. A recovery -enabling gate freezes the gain -riding activityduring pauses in program, preventing background noise from creep-ing up or fading down. Switchable, treble AGC cleanly solves the problemof STL, satelite-feed or tape -deck overload due to the pre -emphasis inthose items.

The TAL-320, the TFL-280B and the TGR-340 join the Moseleyfamily of products responding to today's needs in the broadcastindustry. If listener fatigue is of concern, consider the Moseleyaudio line.

If Ben could see us now!

A Flow General Corhpany

Santa Barbara Research Park, 111 Castilian Drive Goleta CA 930171805) 968-9621 Cable: MOSELEY Telex 658-448

MOSELEY ASSOCIATES, INC.



Audio-Technicarewrites the bookon professional

phonocartridges.

IntroducingThc ProfessionalsThc newAudio-TcchnicaATP SeriesDual Magna' StereoPhono CartridgesWhat dc you really need from aprofessional phono cartridge?Impeccable quality. Reliability.Uniformity. And reasonable cost.The goals we've met with the newATP Series cartridges.

The new ATP Series are flat, smooth, low distortion per-formers that will do your station, studio, disco, library, orcommercial installation proud. They are also very tough...the next best thing to "bullet proof". Because we knowthat "needle drop" isn't just a way to pay for music orSFX. It's a fact of life!

Both ATP cartridges and styli are uniformly excellent.When you at last need to replace a stylus, you always get"like new" performance again, and again, and again.

Don't confuse the ATP Series with other "professional"cartridges that are merely modified home units. ATP unitsdon't have to be treated with kid gloves. And yet we haven'tsacrificed tracking ability to make them rugged.

The all -new ATP cartridges werespecially developed for the work-

ing environment. Three modelsprovide a choice of either spher-ical or elliptical styli. Each car-

tridge is hand -tuned for optimumperformance, with stereo chan-

nels matched within 1.5 dB toeliminate balance problems.

All ATP cartridges featuretapered cantilever tubes that

combine high strength with min-imum moving mass. There's noproblem with back cueing, andthe brightly colored cantilever

tip is readily visible so that youcan spot an LP cut quickly and

accurately.

ATP cartridges are priced from $45.00 suggested profes-sional net. Write for complete specifications. Try the ATPProfessionals on your own turntables. We know you'll bepleased with what you hear. From the thoughtful pros atAudio-Technica.

r11111-

Upgrade your entire recorc -playing system with new ATP tonearms. Rugged and precise, like ATP cartridges. Professionalin every respect. Model ATP -12T or ATP -16T just $150.00 sug-gested professional net.

aucho-technicaINNOVATION o PRECISION 0 INTEGRITY

AUDIO-TECHNICA U.S., INC. Dept. 1006E, 1221 Commerce Drive, Stow, Ohio 44224 In Canada: Audio Specialists, Inc., Montreal, P.Q.

Circle (27) on Reply Card October 1980 Broadcast Enggneering 41

The future of AM/FM broadcasting:Effects of FCC standardsBy Wally Johnson, executive director, ABES

The FCC has embarked on a pro-gram to make as many additionalassignments as possible in the AMand FM broadcasting bands. Theexisting AM and FM technicalstandards have developed a broad-cast system that is considered"mature"; limited numbers of addi-tional stations are available in thelarger markets. To create the poten-

tial for new stations, existing techni-cal standards are being challengedin various procedures and rulemak-ing proposals and new technicalrules are being proposed which, ifadopted, would provide additionalopportunities for new stations.Through greater diversity, whichwould come from additional compet-ing stations, the theory is that

Meet the console thattakes on your personality

Harriscustomizeseach M90 con-sole to meet or ex-ceed every broadcas-ter's most exacting needs.

The possibilities are un-limited with the M90! It's availablein six different mainframe config-urations with a wide choice of plug-in modules. A perfect professionalon -air or production board.

You can start small with a basicnumber of modules and later ex-pand as your requirements grow.

It allows flexibility for the quality -

minded yet cost-conscious broad-caster.

Proven circuit reliability and RFIimmunity make the M90 console aconsistent performer.

Have Harris customize a con-sole for you. Contact: HarrisCorporation, Broadcast ProductsDivision, P.O. Box 4290, Quincy,Illinois 62301. (217)222-8200.

HARRISCOMMUNICATION ANDINFORMATION PROCESSING

further deregulation would result.

AM/9kHzIn preparation for the March 1980

First Session of the Region 2

(Western Hemisphere) Administra-tive Conference on MF Broadcasting(Conference), the FCC adopted aNotice of Inquiry on June 21, 1979,inviting comments on 12 aspects of9kHz spacing. In a notice datedDecember 12, 1979, the commissionannounced it had decided to recom-mend that the United States proposethe adoption of 9kHz spacing for thepurposes of the AM agreement to benegotiated by the Region 2 confer-ence. This became the officialposition of the US delegation at thefirst conference in Buenos Aires.However, the 9kHz proposal wasnot adopted, further study wasproposed and a decision is to bemade at the second conference inNovember 1981, in Rio de Janeiro.

The initial US proposal regardinga change to 9kHz spacing involved amaximum 4kHz shift by existingstations. However, this plan resultsin few additional stations in thelarger markets because of adjacentchannel problems. As a result, fouradditional plans have been devisedthat either pair or group the newchannels in ways that increase thepotential for additional stations inthe larger markets. One proposalcalls for all 12 new channels to beplaced at the top of the AM band.Each of the four new plans wouldresult in stations moving theirexisting operations by more than4kHz. It is obvious that the more thenew channels are grouped, themore new assignments become pos-sible in the larger markets. But, themore the channels are grouped, thegreater the frequency shift requiredfor existing broadcast stations andthe greater the cost.

There are also interesting admin-istrative matters for both the US(mainly the FCC) and the Interna-tional Frequency Registration Board(IFRB) in Geneva. An additional,substantial, workload will be placedon the FCC to implement theagreement, especially if 9kHz spac-ing is adopted. Also, the IFRB willreceive an added workload, becauseit will actually be required to makeinterference studies on each assign-ment and identify incompatibilitiesbetween countries. This could slowdown the existing administrativemachinery for reaching conclusionson applications for new stations orchanges in existing stations.

On July 31 the commissionadopted a 9kHz Interim Report andFurther Notice of Inquiry in which it



theOPTEK 8000 Bulk Tape Degausser...kiss the noise goodbye!

Signal and noise are gone. Wiped Clean. Even today'; highdensity tape is no match for the new OPTEK 8000... the mostpowerful bulk tape recovery system available today. FJIly auto-matic, hands-off operation provides fast-reliable signial erasure.

High performance "E" core coils virtually strip recorded material;with minimum heat, in less than 32 seconds. The 8000 does allthe work...you load the tape, reels up to 16" diameter -1A" to2" widths, set the coils and push the start button. That's it.

Design features include: high quality Bodine drive mo-or, totalsolid-state control logic (C-MOS), resonant coil technology, sturdycast aluminum chassis and hi -tech style fiberglass cabinet.

If you're in the market for a quality conscious, cost efficientdegaussing system that delivers recording tape that doesn't talkback...there's not another machine available today that canmatch the 8000's performance.

For complete technical information and the name of yournearest OPTEK distributor call or write: Mr.EloyG.ChairezOPTEK INCORPORATED, 1390 McCan Street, Anaheim, California 92806,

(714) 630-8280.Circle (29) on Reply Card

OPTEK

Standards

asked persons interested in applyingfor new stations (that could go onthe air by the end of 1987) to filestatements of intent telling wherethe stations would be and what typeof service they would offer.

The results of the Region IIconference have the potential formaking substantial changes in AMbroadcasting service. Additional in-terference may result from someneighboring countries, and proce-dures will change because of theinvolvement of the IFRB in determin-ing incompatibilities in assignmentsand the early notification of pro-posed assignments in an inventory,which in effect will protect them forfive years.

Preparations for the second Re-gion II conference are increasing inintensity. There is a commissionadvisory committee through whichindustry can join in the preparatoryprocess. The time for preparation,however, is short. Meetings ofgovernment representatives are tak-ing place in a Committee for theInter -American Telecommunications(CITEL) working group and in apanel of experts, which are working

on procedures and positions thatwill be recommended for considera-tion at the second conference. Also,the FCC scheduled a Further Noticeof Inquiry for adoption in lateSeptember; comments are due inDecember, and an FCC meeting isset for February 1, 1981, to deter-mine positions on various issues.Conference proposals by the variousgovernments are due in Geneva byMarch 1, 1981.

The commission's Clear Channeldecision is not final yet. Requestsfor court review and petitions forreconsideration have been filed, andthey will have to be acted uponbefore the decision can be imple-mented.

FM/Quadrasonics/AM StereoIn FM broadcasting the commis-

sion has proposed a significantincrease in available FM channelassignments in BC Docket No. 80-90.The proposal is to allow Class Astations to operate on Class B -Cchannels; add two new classes ofstations-Class B1 and Cl; permitClass B stations in Zone II; andrequire all existing Class B and Cstations to meet operating minimumsfor power and antenna height, or bereclassified to a lower class. Com-ments on this proceeding are due

October 1.The commission adopted a Notice

of Proposed Rulemaking on July 17,which proposed to permit FM quad-rasonic broadcasting. It proposedstandards for both 4-4-4 and 4-3-4modes, which will permit licenseesto choose the quadraphonic modebest suited for their needs. Thesignal would be compatible withpresent stereo transmissions. Com-ments are due November 10.

A final decision to permit AMstereo has been postponed based ona Further Notice of Proposed Rule -making issued by the commission.The proponents of competing sys-tems have been asked to gatheradditional data to aid in selecting asystem. They may present additionalevidence in any category in whichthey feel their systems have beenimproperly rated. Comments werealso asked on such items as theevaluation categories and methodsused in choosing a system andwhether the decision should be leftto the marketplace.

The proposed changes describedfor AM and FM broadcasting showthat even if they have developedinto mature services they are stillcapable of exciting changes, prefer-ably to give increased service to thepublic.

Beaveronics, Inc. Write or phone for details.

8 Haven AvenuePort Washington, New York 11050Tel: (516) 883-4414

STUDIO PRODUCTION VIDEO SWITCHING SYSTEMSFOR REMOTE Et SMALLPRODUCTION FACILITIESMODEL J Et D 712$7,400.00

12 -input, 4 -outputmix -effects amp with

downstream mixer, includesdownstream preset & program

busses with cut bar, RGB chroma key

(Also available in PAL and PAL -M versions)

Standard Features 12 inputs including Black -burst and Color

BackgroundBuilt-in Black Burst GeneratorBuilt-in ColorizerBuilt-in RGB Chroma keyer

Four Switching busses Downstream Preset and Program Busses

with cut bar Rack -mounted electronics Adjustable Soft Wipe Adjustable Border edges Color Matte Vertical Interval switching thru-out

Illuminated Momentary Contact push buttons Internal, external, Chroma-key, and matte

inputs to keyer

Built-in pattern modulator with frequencyand amplitude controlsFull Tally

Pattern symmetry control Illuminated Momentary contact push buttons

for effects selection Normal/Reverse/Normal-reverse wipe transi-

tions Pattern limit controls for presetting size of

patterns or varying vertical and horizontalaspect ratio

Loop -through inputs Input amplifiers with clamping Synchronous/Non-synchronous inhibit Modular construction with front access plug-

in modules

Options:Downstream Keyer

Prices and Specifications Subject to Change Without Notice.FOR MODERATE SIZE FACILITIESMODEL B1-154$12,990.00

40" $21,795.00

15 -input, 4 -busmix/eff / key amp with

downstream mix/key ampMany optional features in-

cluding DSK & quad -split, etc. Circle (30) on Reply Card

FOR SOPHISTICATED FACILITIESMODEL B1-156 ,,

4:Waft,

"- . ""

All Beaveronics Switching Equipment Carries a Two Year Warranty

15 -input, 6 -buswith two full mix/

eff /key systems & dir.pgm & pre busses: many

options available, DSK, Quad. etc.

Master control switchers AFVwith audio breakaway

Routing switchers with AFV

CHECK BEAVERONICS FOR: Specialized custom switchers Selected terminal equipment

OTHER ITEMS AVAILABLE FROM BEAVERONICSFAVAS MASTER CLOCK SYSTEMS

Available with accuracybetter than 1 second/yr.

ON THE OTHER HAND,CSC 1 -OUR 1111MING MUIR101101111:0 ORM viEff(

tut- a-tal- cs Ile- E HSU a NI- MINK 'PS?.'

mos imorni 4 Mr

) C (7) b))' t

A AMIE AVM Miro 641 Eli 111'

C

(Trit

471'

I) 0

SNITCHER 1

With a microprocessor -based 3M routingswitcher, you can eliminate the problemsof hard wiring once and for all. Andspecify just about any type of controlyou want.

It all depends on how you'd like to set it up.Our design engineers can then tailor the matrixfor you. From your smallestrequirement on up to any desiredsize. And they'll help you select thecontrol that's best suited to yourneeds, too.

The choice is yours. Touchpad,thumbwheel, illuminated or L.E.D.pushbutton, machine, X -Y, or alphanumericuniversal control. Even a terminal control thatallows you "supervisory" controlthroughout the system, or computercontrol through our RS -232 port.

What's more, 3M routing switchersare easily expandable. Start with a matrix that matchesyour present requirements. Then as your studio grows,your routing switcher does, too. With the simpleaddition of extra frames and switch cards.

.c

L.E.D./Illuminatedpushbutton Space -guzzling, multi -conductor cables are

eliminated. And so are unnecessary outputpanels. Because with our system, out-puts can be reallocated as required.

The heart of the system, the Model 6500microprocessor, as well as controlling the

routing matrix, can be integrated with a machinecontrol system to offer absolute

production control of film chains,VTR's and other production machines.

Or it can be used as a stand-alonemachine control system which offersthe same coaxial wiring and expand-ability of the routing switcher panel.

F nally, a routing switcher whose growthdoesn t depend on the size of your building.

For more information about 3Mrouting switchers, or a custom

design consultation for your studio,call collect, (612) 736-1032.0r write on

your letterhead to: Video Products/3M, Bldg. 223-5E/3M Center, St Paul, MN 55144.

THE ROUTING SWITCHERS THAT GROWAS YOUR NEEDS GROW.

Machinecontrol

X -Ycontrol

Model 6500Microprocessor

Controller

Thumbwheel Universalalphanumeric

3MCircle (31) on Reply Card

Nth AES convention

October 31 -November 3, 1980Waldorf-Astoria Hotel,New York City

When the 67th Audio EngineeringSociety convention opens in NewYork in late October, the theme willbe that of reaching out to audioengineers on important topics of the'80s. In keeping with this idea,scheduled topics include: Digital Techniques in Audio; New Measurement Applications; Studio Design Technology; The Development of New, High -Quality Disc Recording andManufacturing; and The Growing Awareness of theMerging of Audio and VideoTechnologies.

To adequately cover these andother audio subjects, the conventionwill be expanded to include anunusually high number of technicalpapers. In addition, a series ofworkshops has been scheduled thatdeals with timely topics, such asdigital editing, small studio update,high-speed tape duplication, and aneducational open house for inter-ested students. Two other work-shops will be practical sound rein-forcement techniques and practicalvideo for the audio engineer. Aspecial workshop on microphone

usage (originally presented at theMidwest Acoustic Conference inMay 1980) will be presented.

The workshops are new this year.

They involve four days of intensiveinvestigations in a workshop atmos-phere, are conducted by profession-al practitioners and include a spe-

British companiesto make strong showing

at AES-New YorkAt least 21 British companies

will exhibit new and establishedproducts at the AES Conventionin New York. In addition to thenew equipment, equipment in-troduced earlier at the AESConvention in Los Angeles inMay will be displayed.

The following items highlightsome of the latest equipmentfrom British companies ex-pected to be displayed at theNew York convention. Some ofthese listings are late arrivalsand do not appear on the rosterof exhibitors.

Advanced Music Systems.Latest audio units include a tapephase simulator, an analog sys-tem giving flanging, tunneling,vibrate and auto -pan effects witha choice of 20-80ms delay.

Audio and Design (Recording).Offering new stereo/dual monocompressor/limiter with LEDbar -graph reading for gain re-sponse and featuring infinitelyvariable compression slope.

Audio Developments

Audio Developments. Unveil-ing two new mixers for pro-fessional use and for ENG appli-cations. Featuring a prographicequalizer with memory for stor-ing 32 curves.

Allen and Heath. Premieresworking model of 16:4/2 mixingconsole, offering exceptionalversatility at an attractive price.


PHILIPS'

Presents

World MassTELEVISIONThe internationally recognized cameras and broadcastequipment preferred by broadcasters, productioncompanies and industry around the world:

VIDEO 80 .%Modular camera andexpandable productionsystem inBroadcast andInstitutionaluse around theworld.

LDK-25BNewest version of theWorld Class, state-of-the-art LDK 25/5/15camera family. Withinnovations used byABC in excitingcoverage of theWinter Olympics.

PHILIPS Innovative Leader in World Television

LDK-14The years -ahead2/3 -inch fie d andstudio camera family.Now with triaxcapability.

Plus ... a wide array of innovativeWorld -Class products like:Transmitters and ExcitersFastest grcwing UHF'VHF trans-mitter line n North America.Video Tape Recorders1" type C, system and stand-alone.New. Time Code GeneratorSMPTE, PAL, SECAM rates, andfilm. .24 frames per second!Tape SynchronizerTelevision audio post production.Digital Noise ReducerFully automatic.New, Synch and Timing SystemBuilt around ultra -stable -PhilipsSPG sync generator.Test and Measuring EquipmertModulators, demodulators, VITSanalyzer & generator, and newwaveform monitor and vectorscope.New. TeletexText display system component.

Contact your Philips representative today,indicating product interest, or callPhilips Broadcast Equipment Corp.,91 McKee Dr., Mahwah, N.J. 07430.(201) 529-3800.


BMI Broadcast Systems

Unattended TransmitterMonitor, Alarm & ControlModel 5003Installed at remote transmitterlocations. Direct connectionto public telephone network,leased lines, two-way radio ormicrowave network. Feedsdata to Model 5004.

4 Model5004

Central reporting andrecording unit. Five

groups of 8 status indi-cator lights, plus touch

button key pad.

Remote Supervisory Model 5003Capable of monitoring and controlling up to 5 transmitters at oneremote site plus building status. It connects directly to dial -up publictelephone, radio, or microwave. Stand by battery power supply isstandard.

Central Model 5004Displays the status of (8 to 48) remote contacts and has the hardcopy data logger to provide the permanent record of time of day,date and status.

These two units can be equipped to provide building securitywith recordings to notify local security forces.

Send for full color, 4 -page brochure.

M N MONROE ELECTRONICS,INC.E211 Housel Avenue, Lydonville, NY 14098Phone: (716) 765-2254

AES convention

BMI Broadcast Systems. Firstpublic US showing of its new24A Stereo Mixer. (System maybe seen at the Allen and Heathbooth.)

H. H. Electronics. Power loud-speakers boast superior struc-tural accuracy of magnesiumchassis to allow closer voicecoil gap, higher magnetic fieldstrengths and increased per-formance.

Raindirk

Raindirk. Showing new rangeof power amplifiers with MOS-FET output stages, stereo con-trol unit with remote disc ampli-fier and 3 -band equalizer, and amulti -track recording console.

Rank Audio Visual, Newmodular mixing system, graphicequalizer, and intercom system.

Soundcraft Electronics. USdebut for the SCM 382-24 multi-track tape recorder and Series800 console.

Trident Audio Developments.Premier of TSR professional 24 -track tape recorder with newrecord -replay electronics offer-ing superior S/ N ratio.

Trident Audio DevelopmentsCircle (33) on Reply Card


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AES convention

AKGC-567THE"ALMOST"INVISIBLECONDENSERCAVALIERMICROPHONE

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cial tape recorder maintenance clin-ic.

A tentative schedule of the techni-cal sessions and special workshopsis shown in the accompanying shortarticle. Also listed separately arethe convention exhibitors as availa-ble at press time. A final programand a complete exhibitor listing will

be available at the AES registrationbooths.

This year an expanded exhibitarea will allow those who attend toview the latest in audio products,including new digital product entrieson five levels of the conventionhotel, including demonstrationrooms. These demo rooms are

AES 67th CONVENTION CALENDARTimes of workshops are subject to change

Gray areas indicate Technical Sessions

Color boxes show Workshops

FRIDAY 8 30 AMOCT. 31

9AM

Business Meeting

ATRANSDUCERS DIGITAL EDITING

2 PM B

AUDIO RECORDING& REPRODUCTION

SOUNDREINFORCEMENT

7 PM C

STUDIO TECHNOLOGY AUDIO IN MEDICINE

SATURDAY YAM

NOV. 1D

SIGNAL PROCESSING &MICROPROCESSORAPPLICATIONS,PART I

POTENTIALS OFPERSONALIZEDPRIVATE RECORDINGSTUDIOS

2 PM E

SIGNAL PROCESSING &MICROPROCESSORAPPLICATIONS,PART II

EDUCATIONAL FAIR

7 PM F

SOUND REINFORCEMENT& ACOUSTICS

VIDEO FOR AUDIO

SUNDAY y Aro

NOV. 2G

INSTRUMENTATION HIGH-SPEED DUPLICATION

'PM H

DIGITAL TECHNIQUES MICROPHONE TECHNIQUES

7 PM SOCIAL HOUR &AWARDS BANQUET

MONDAY 9AM

NOV. 3I

BROADCAST AUDIOUPDATE

MULTITRACK TAPERECORDERMAINTENANCE, PART I

2 PM J

ELECTRONIC MUSIC MULTITRACK TAPERECORDERMAINTENANCE, PART II

5 PM CONVENTION ENDS

Embarrassing questionsto ask audio

console salespeopleSometimes it pays to ask questions. If thesubject is audio consoles, asking difficultquestions can be very revealing in comparingone console to another. Here are some of thequestions that make most console salespeoplesquirm.

Is the console "human engineered"? Does theconsole have an esthetically "professional"appearance? Is the layout well defined anduncluttered? Are controls large? Do they fit thehand? Are they well labelled and lighted? Dothey provide adequate visual feedback to affirmthe position of the control? Is consolenomenclature permanently engraved?

Easy to service? Are all components readilyaccessible and isolated for individual servicing?Are op -amps in plug-in sockets? Are thereservice loops in the wiring harness? Areextender boards provided? Are all wiresuniquely numbered and referenced to yoursystem documentation?

How responsive is the service department?Can they provide a history of fast, efficientcustomer service? Are they confi-dent enough to furnisha complete list of cus-tomers for you to call?

ADM 1600Audio Console

-Modestbut mighty.

How easy is installation? Is the consolecompletely assembled and ready to install? Areinstallation points readily accessible? Are allprogram inputs and outputs uniquelytransformer isolated?

How about specifications? Are themanufacturers' published specificationsconsistent and easily understandable or miredin the game called "specsmanship"?

How good is reliability? Do all modulesreceive three levels of testing? Does the totalsystem receive 4 levels of performanceverification? Do both the modules and systemreceive extensive burn -in?

Is the console backed by a 5 -year, all-inclusivewarranty? (Only ADM answers "yes" to that one.)

ADM and only ADM answers all of thesequestions with a full, no weaseling, resounding"YES"! The only question remaining is, whenwould you like to talk to us about a new audioconsole?

For facts about our Series 3200, 2400, 1600, or800 ADM Audio Consoles, contact ADM

Technology, Inc., 16005 Sturgeon,Roseville, Michigan 48066. Phone

(313) 778-8400.TLX 23-1114.

®TheAudioCompany


AES convention

AES Convention Exhibitors

AB SYSTEMSACOUSTIC DESIGN BY JEFF COOPERACOUSTILOG, INC.AGFA-GAVAERTAKG ACOUSTICSALLEN AND HEATH BRENNELL LTD.ALPHA AUDIOAMBER ELECTRO DESIGN LTD.AMPEX CORPORATIONAM PRO/SCULLYANALOGIC CORPORATIONANVIL CASES, INC.

APHEX SYSTEMS LTD.ASHFORD AUDIO PROD. CO. INC.ASHLY AUDIO, INC.ASSOCIATION OF SOUND &

COMMUNICATIONS ENGINEERSAUDICO, INC.AUDICON MARKETING GROUPAUDIOARTS ENGINEERINGAUDIO & DESIGN (RECORDING) LTD.AUDIO DEVELOPMENTSAUDIO KINETICS (UK) LTD.AUDIO PROCESSING SYSTEMS, INC.

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More premium quality features perdollar than any other hand-held 31/2DMM! The only one with built-in testsocket for transistor hFE. Sideswitches for easy one -hand use. Autopolarity/zero. Large 0.5" LCD digits.Resolution down to 100 µV. Accuracy

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0.1% Accurate DMM WD -759 $159.95Want top quality? Here's the only handheld 31/2 DMM with full info LCD readout:Function (V, A or 11), Amount (numericvalue) and whether AC or DC. Also theon/yone with full range high and low powerohms. Features auto polarity/zero, RFshielding, recessed input jacks, high im-pact case with front guard rail that protectsagainst damage if dropped face down.Supplied with battery, tilt stand, spare fuse(stored inside case). Deluxe test probeshave dual banana plug, alligator clip and"no -short" probe tip. Full one-year war-ranty. AC adapter, "LED -head" continuityprobe and carry case available.

Lab accuracy WD -758 with LED readout 5149.95

See your VIZ distributorAsk about the 7 VIZ benchDMMs with prices to $359

VIZ Mfg. Co., 335 E. Price St., Philadelphia, PA 19144Over 70 test instruments in the line


AUDIO-TECHNICA U.S., INC.AUDIO BY ZIMET, INC.AUDIOTECHNIQUES, INC.AUDITRONICS, INC.BASF SYSTEMSBEYER DYNAMICBGW SYSTEMS, INC.B & K INSTRUMENTSBOSE CORPORATIONTHE BTX CORPORATIONCADAC/IRV JOELCALZONE CASE CO.CERWIN-VEGACETEC GAUSSCETEC VEGACOMMUNITY LIGHT & SOUND, INC.CON BRIOCONSILIUM INDUSTRI ABCONVERGENCE CORPORATIONCOVER PUBLICATIONSCREST AUDIO, INC.CROSS COMPANY LTD.CROWN INTERNATIONAL, INC.DAVID LINT ASSOCIATES, INC.dB -CASSETTEdbY, INC.D & D ENGINEERINGDELTALAB RESEARCH, INC.DESIGN ELECTRONICSDOLBY LABORATORIES, INC.EASTERN ACOUSTIC WORKS, INC.,ELECTRO-HARMONIXELECTRO-VOICE/TAPCOEMILAR CORPORATIONEMPIRICAL AUDIOEUMIG (USA) INC.EVENTIDE CLOCKWORKS, INC.FAIRLIGHT INSTRUMENTSFURMAN SOUND, INC.GOTHAM AUDIO CORPORATIONGRANDY, INC.HARRISON SYSTEMS, INC.HEINO ILSEMANN GMBHHEWLETT-PACKARD COMPANYH.H. ELECTRONICS, INC.HM ELECTRONICS, INC.HUTCOINFONICSINOVONICS, INC.INSTITUTE OF AUDIO RESEARCHINTERFACE ELECTRONICSINTERNATIONAL AUDIO, INC.INTERNATIONAL CONSOLES

CORPORATIONITAMIVIE ELECTRONICS, INC.JAMES B. LANSING SOUND, INC.KEITH MONKS (USA) INC.KIMBALL INTERNATIONAL, INC.KING INSTRUMENT CORP.KLARK-TEKNIK RESEARCH LIMITEDKLIPSCH & ASSOCIATES, INC.LEXICON, INC.LINK HOUSE PUBLICATIONSLOCKWOOD & COMPANYMARCONI INSTRUMENTSMARSHALL ELECTRONICMARTIN AUDIO/VIDEO

CORPORATIONMCI, INC.MEYER SOUND LABORATORIES, INC.MICMIX AUDIO PRODUCTS, INC.MIDAS AUDIO SYSTEMS, LTD.MITSUBISHI ELECTRIC CORP.MODULAR SOUND SYSTEMSMTI CORPORATIONMUSICOMUSIC TECHNOLOGY, INC.MXR INNOVATIONS INC.NADY SYSTEMS INC.NAGRA MAGNETIC RECORDERS, INC.NEAL FERROGRAPHNEUTRIK PRODUCTSNOISE LIMITEDORANGE COUNTY ELECTRONICSORBAN ASSOCIATES, INC.OTARI CORPORATIONPANASONIC P.A.D.PEAVEY ELECTRONICSPENTAGON INDUSTRIES


THE NEW 900 SERIES MODULARSIGNAL PROCESSING SYSTEM.

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With rack space at a premium, you want to save space anywhere you can.That's why dbx is introducing the new 900 Series Modular Signal Processing System.

You start with a single, easy -to -install 51/4" x 19" rack with built-in power sup-ply. Then just slip in the modules you need. Up to 8 dbx signal processors, withstorage for a ninth.

But the modules themselves are the real stars.Our Model 902 is the only de-esser that continuously analyzes the input

signal spectrum, providing the exact amount of de-essing you want regardlessof signal level. And the 902 can be used broadband or on high frequencies only.

The 903 Compressor offers a special negative compression feature. In use, itactually begins to attentuate at the threshold, which gives the signal a new senseof punch. Of course the 903 also features our Over Easy compression as well astrue RMS level detection.

Our 904 Noise Gate features adjustable attack and release rates, Over Easydownward expansion, a special key input that allows you to gate one instrumentby another, and a unique "gate" mode which eliminates the need to gain ridesolos during multi -track mixdown.

The 900 frame accommodates dbx noise reduction modules as well.And this is just the beginning of our signal -processing system. Soon we'll

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AES conventionSMPTE EDIT -CODE

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THE NEW STANDARD OF THE INDUSTRYFEATURES: The McFadin Windowni wide range digitaldecoder, highly legible and unique FONT, 1-3/4" rack mounting,vertical interval display, all front panel controls, drop frameindicator, choice of Time -Code or User -Bits, regeneratedTime -Code output (DUB), MODEL DR -107A.

GRAY ENGINEERING LABORATORIES

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MARATHON PRODUCTS CORPORATION3:34 West Boylston Street. West Boylston, Massachusetts 91583

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PRO -TECH AUDIOPUBLISONQUAD EIGHT ELECTRONICSQUANTUM AUDIO LABORATORIESRAINDIRK LTD.RANK AUDIO VISUALRECORDING FOR THE BLIND, INC.RENKUS-HEINZ, INC.ROGER BARTH K.G.ROLANDCORP U.SRUPERT NEVE INCORPORATEDRWO/FOSTEX CORPORATIONSAE PRO PRODUCTS GROUPSAGAMORE PUBLISHING COMPANY, INC.SAKI MAGNETICS INC.SANSUI ELECTRONICSSESCOM, INC.SHURE BROTHERS INCORPORATEDSIERRA AUDIO CORPORATIONSOLID STATE LOGIC LIMITEDSONTEC ELECTRONICSSONY INDUSTRIESSOUNDCRAFT ELECTRONICS, LTD.SOUNDSTREAM, INC.SOUND TECHNOLOGY, INC.SOUND WORKSHOP PROFESSIONAL

AUDIO PRODUCTSSPECTRA SONICSSTANTON MAGNETICS INC.STEPHENS ELECTRONICS, INC.STUDER REVOX AMERICA INC.STRAND CENTURY COMPANY LTD.SWINTEK ENTERPRISES, INC.SYNERGETIC AUDIO CONCEPTSSYNTON ELECTRONICS B.V.TABER MFG. & ENG. CO.TANGENT SYSTEMS INC.TANNOY PRODUCTS LIMITEDTAPCO/ELECTRO-VOICE, INC.TAPEMAKER SALES CO., INC.TEAC CORPORATION OF AMERICATECHNICAL AUDIO DEVICES (TAD)

TELEX COMMUNICATIONS3M COMPANYTRIDENT AUDIO DEVELOPMENTS, LTD.UNICORDUNITED RECORDING ELECTRONICS

INDUSTRIES (UREI)URSA MAJOR, INC.U.S. PIONEER ELECTRONICS CORP.VALLEY AUDIOVICTOR COMPANY OF JAPAN, LTD. (JVC)WHITE INSTRUMENTS, INC.WIREWORKS CORPORATIONWOELKE MAGNETBANDTECHNIKXEDIT CORPORATIONYAMAHA INTERNATIONAL

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usually good places to hear thelatest in audio technology.

Studio toursThe convention will feature studio

tours to give those who attend achance to view the latest New Yorkrecording scene. This popular AESactivity provides visitors with anopportunity to keep current on oneof the most active recording centersin the world. Bus transportation willleave the Waldorf-Astoria on Satur-day morning, November 1, startingat 8:30 am, and accommodationswill be limited. Full conventionprogram registration is required forparticipation. There will be a $5service charge for transportation. 0



Blue chip ENG on aIf you thought that an Ikegami ENG camera's been beyond your budget till

now, take heart. The HL -78A approaches the high performance standards of theHL -79A. But the price is encouragingly lower.

The HL -78A is the quintessential ENG camera -20 pounds complete with lens,battery and ready for action. It is beautifully balanced, human engineered, withBK-7 glass beamsplitter optics, and state-of-the-art electronics. + 18 and +9 dBgain settings enable you to invade domains of darkness that daunt lesser cameras.

And with studio options like 41/2 -inch electronic viewfinder, remote paint box,program microphone and intercom, it does double duty. What's more, it meetsEIA Std. RS -170A including SC -H phase criteria, with adjustable H&V blankingpulse widths to meet FCC limits. Put the HL -78A on your ENG team. See yourIkegami dealer/distributor or contact Ikegami Electronics (USA) Inc., 37 BrookAvenue, Maywood, N.J. 07607; (201) 368-9171. West Coast: 19164 Van Ness Ave.,Torrance, CA 90501 (213) 328-2814; Southwest: 330 North Belt East, Suite 228,Houston, TX 77060 (713) 445-0100; Southeast: 552 South Lee St., Americus, GA31709 (912) 924-0061.


budget

Ikegami HL -78AOctober 1980 Broadcast Engineering 57

Eliminating the first class license:pros and cons

Docket 20817 Comments due by November 4,1980 Replies by December 15, 1980.

The FCC's proposal to eliminatethe First Class Radiotelephone oper-ator license for broadcast stationtechnicians is causing the industryto take a fresh look at its technicalrequirements. Broadcasters aregathering in pro and con camps.One result may be the dicontinua-tion of the First Class License. Butthe issue of how station managers

will select their technical personnel,and what criteria will be used tojudge technical competence is stillcloudy.

Major associations-NAB, NRBA,Society for Broadcast Engineers,Association for Broadcast Engineer-ing Standards-are all gatheringcomments from their members toadvise the FCC on this issue.

Some industry viewsSome broadcast consultants think

the First Class license gives stationmanagers a minimum requirementfor hiring engineers, but on thetechnical side, the exams are notparticularly difficult for qualifiedengineers.

NEW FM AND TVFIELD STRENGTH METERFIM-71 Accurate - Direct Reading - Volts or dB 45 MHz to225 MHz - Continuous Tuning Peak or Averaging Detector(switch selectable) Wide or Narrow IF Bandwidth (switchselectable) 20 dB or 60 dB Meter Range (switch selectable) AM or FM Demodulator (switch selectable) CalibratedDipole Antenna, Mounted on Case for Near -Ground Measure-ments or Removable for TASO Measurements 140 dBMeasurement Range (1 µV to 10 V) 4% -Inch, MirroredScale, Taut -Band Meter Front Panel Speaker Recorder Output Rugged, PortablePackage CalibratedSignal Generator,45 MHz to 225 MHz Battery or ExternalPower Use as SignalSource/Selective Volt-meter for InsertionLoss Measurements ofFilters, etc. MeasuresFM Harmonics to -80 dB

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Major associations contacted haveno official stands on the issue, butplan to file formal opinions on No-vember 14. However, the followinginformation was gathered from in-dustry sources:

NAB is polling its constituents inefforts to formulate its stand.

NRBA's consultant Harold Kas-sens of A.D. Ring & Associates,said, "Just because someone holds afirst class license doesn't mean anengineer is qualified." Kassenspointed out, as did the FCC, thatmany people take crash courses topass the commission's multiplechoice examination.

The Society for Broadcast Engi-neers plans to take this issue to itsboard of directors meeting in earlyOctober following the NRBA conven-tion in Los Angeles. Bob Jones, SBEpresident, thinks the SBE will makeits combined membership viewsknown to the FCC as part of itsassociation obligations. Separately,an SBE officer said he opposedabolishment of the First Class li-cense requirement even though hisstation's management might approveit as a cost savings. Also, the SBECertification Program might serve asa substitute for first class exams tohelp station managers find qualifiedtechnical personnel.

The Association for BroadcastEngineering Standards: Wally John-son, executive director, expects tomake a formal filing.

The FCC actionThe commission has proposed

discontinuing the issuance of newand renewed First Class Radiotele-phone Operator Licenses and elimi-nating examinations for radio andtelevision broadcast station techni-cians.

In a further rulemaking notice thecommission proposed modifying therules to allow individuals performingany technical duties at broadcaststations to hold any class of com-mercial radio operator license, in-cluding the Restricted Radiotele-phone Operator Permit, and to makestation licensees fully responsible



Fuji.When your jobdepends on it.

Video. You use it to make a point.And a living.

That's why you need Fuji.Because for networks, independent

producers, audiovis.ual experts and otherprofessionals who depend on us,near -perfect is never good enough.

Whatever the format -2" quad, 1'3/4" U-matiO or 1/2" VHS or Betacassettes-Fuji gives you the per-formance you need to look your best.

That's how we built our repu-tation for richer, more lifelike color.Clearer, sharper, crisper pictures.Superior consistency and durability.Plus freedom from dropouts, toprotect your machines... as well asyour reputation.

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1st class

for determining the competence oftheir technicians.

This action is part of a largerongoing proceeding looking into FCClicensing of commercial radio opera-tors in all services, broadcast andnonbroadcast, directed primarily tothe radiotelephone operator class oflicense.

The commission noted there isevidence that the current First Classoperator license examination mayfail to accurately measure technicalcompetence to install, maintain,repair and supervise operation ofAM, FM and TV equipment. Howev-er, it is clearly impractical for thecommission to test applicants direct-ly on transmitting equipment-ie, torequire applicants to make repairs,etc., in the presence of examiners.

The FCC said that even if aneffective license examination proce-dure could be constructed, thereappeared to be a number of otherforces, especially other commissionrules, requirements and potentialsanctions, that could render techni-cal operator licensing largely redun-dant. Also, the commission noted itrecently had proposed making ran-dom, in-depth investigations of sta-

tions, including field audits thatwould cover station compliance withtechnical and nontechnical rules.Because these audits would pres-sure station licensees to abide by allFCC regulations and provide incen-tives to hire competent technicalstaffs, the need for operator licen-sing might be diminished further.

The FCC noted that because theFirst Class licensing requirementimposed costs on the commissionand broadcast stations, and some-times inappropriately excluded com-petent technicians who were notskilled in taking examinations, whileproviding primarily redundant bene-fits, it appeared to be in the publicinterest to eliminate the operatorrequirements to the maximum extentallowed by the Communications Act.

If the proposed rule modificationswere adopted, the commissionadded, individuals holding FirstClass licenses would continue tohold them, but upon renewal theywould be issued RadiotelephoneSecond Class license documents.

Further information concerningthis Notice of Proposed Rulemakingcan be obtained from Roy Kolly orVernon Wilson, telephone (202) 632-7240, or Charles B. Goldfarb (202)632-6460, FCC, Washington, DC.However, members of the public

should note that from the time aNotice of Proposed Rulemaking isissued until the matter is no longersubject to commission considerationor court review, the proceeding isgoverned by the interim policy ofthe commission on ex parte con-tacts.

A summary of procedures in theinterim policy is available from theCommission's Consumer AssistanceOffice, FCC, Washington, DC 20554,(202) 632-7000.

Interested persons desiring tosubmit comments, proposals andrecommendations pertaining to theabove matter may do so on orbefore November 14, 1980. Repliesto such comments, proposals orrecommendations may be submittedon or before December 15, 1980. Allrelevant and timely filed commentswill be considered.

Write to the FCC, 1919 M Street,NW, Washington, DC 20554 to stateyour view on the elimination of theFirst Class license. Address yourcomments toward FCC Docket 80-481. Do it soon because the reviewis in early November. Let the FCCknow what you think in this import-ant issue.

CARRY

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November BROADCAST ENGINEERINGwill be analyzed for advertisingreadership and recognition by AD -Q,a division of Harvey ResearchOrganization. We offer thissophisticated analysis as a freeservice to you. Measure yourmarket impact. Advertisingreservations for this analysis issuemust be made by October 5. Callyour BROADCAST ENGINEERINGadvertising sales representativeTODAY.

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TALL BUS 95, HI TALLY

4V LO TALLVIEWFINDER SW. MODULE

.6V

An AutomaticCamera Viewfinder Switcher

By Jack Hastings, chief engineer, WMAR-TV2, Baltimore, MD

Many television stations use theauxiliary input to the studio cameraviewfinder to display the effectsgenerator picture to the camera-man. When there is only one effect,this is simple. It gets a bit difficultwhen there are two or three effectsplus a quad split generator. Anymanual system for switching thepicture to the viewfinder results inan already overworked switcherhaving more work to do or thecameraman having to know whicheffects he is programmed on if hedoes the switching. He also muststep through all the effects he is noton to arrive at the one he is on. In afast moving show this is impractical.What is needed is a system that will

BUTTONTALLYLAMP

SWITCHER

-I PUSHBUTTON

V-5V

ADDED LINE TO VIEWFINDER SWITCHER

TO CROSSPOINT-5V ON MSLINE WOESLATCHED

TO SAMEINPUT ONOPPOSITBANK

Fig. 2

sense what effects the camera isprogrammed on and automaticallysend that effects picture to theviewfinder. This article describes asystems that was developed for aGrass Valley 1600-7K switcher withthree effects and a quad splitter.

The problem with an automaticsystem when there is more than oneeffects bus is that it has no way ofknowing which bus to switch on ifthe camera was programmed onmore than one bus. The solutionwas to have a logic system decideon the basis of an order ofimportance. The Grass Valley 1600-7K switcher has three effects buses,a quad split and preset and takebus. The order of importance is

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shown in the chart of Figure 1. Thesensing circuit is shown in Figure 2.The tally lamp bus idles at +4V.The Grass Valley instruction manualsays that when the switcher buttonis pressed, the low side of the tallylamp goes to -5V. The lamp then has9V across it and lights at lowintensity. When the camera goes onthe air, the high side goes to +9Vand the lamp lights brightly. It wasfound that at the lamp, where thesensing circuit was connected, thelow side voltage actually went to-2.75V or -3.75V depending on thebus, which would make an unde-pendable logic level.

The circuit of Figure 2 takes careof the problem. When the lamp is

SetupQuad on Pgm/Pst and

camera on Eff. 1 or 2Eff. 3 on Pgm/Pst and

camera on Eff. 3Eff. 2 on Pgm/Pst and

camera on Eff. 2Eff. 1 on Pgm/Pst and

camera on Eff. 1Quad on Preset and

camera on Eff. 1 or 2Quad on Eff. 3 and

camera on Eff. 1 or 2Eff. 2 on Eff. 3 and

camera on Eff. 2Eff. 1 on Eff. 2 and

camera on Eff. 1camera on Eff. 3camera on Eff. 2camera on Eff. 1

Fig. 1

Viewfinder will get

Quad

Eff. 3

Eff. 2

Eff. 1

Quad

Eff. 3

Eff. 3

Eff. 2Eff. 3Eff. 2Eff. 1

The order of importance increasesfrom bottom to top, so if the camerais programmed on more than oneeffect the system will switch on thehigher priority and block all othersbelow it. The switcher should avoidhaving the camera programmed ontwo different effects. If it is desirableto have the camera programmed ontwo different effects because they areto be used in sequence, make surethat the higher order setup goes first.


QUAD ONPST

ACTIVE STATE

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24000 047 246024Kft

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Fig. 3

8

U4D

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115B

U6A

U6C

2

3

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U160

6

U17B

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13

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12 13

100

11

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10

10A

3 I

2

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4 8

9

8 9

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9

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U1.U2,U3,114,U5,U6.-CD4011

U77,U8.U9.U17.CD4001

U1O.U11,-CD4071B

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U13-CD4066

U14-CD4050

U15 -VOID

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QUAD E3 E2 El

VIDEO VIDEO VIDEO VIDEO

36 35 40 390 0 0 0

QUAD 1

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0 SELECTOR44

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VIDEO IN750

Camera viewfinders

not lit, the gate sees a high due tothe pullup resistor and the low sideof the tally lamp, which is floatingat +4V. When the lamp is lit, thelow side of the tally lamp goestoward -5V. R1 and R2 are chosento give OV at the gate input. Both Aand B bank buttons are connectedto a dual input NAND gate. Thegate output will be low if neitherbutton is pressed. If either button ispressed the output will go high.

The logic circuit is shown inFigure 3. The video switching deviceis a quad bilateral switch. Thecircuit works as follows: NOR gateU7D detects if the camera isswitched up on any bus of effects 1or 2 which are the inputs to thequad effects. The other gates U4,U5 and U6 are activated by acombination of the camera beingswitched up on an effects bus andthat effects switched up on anothereffects or on preset or program. TheOR gates U10 -A, B, C and D and

10K

-7-

6V

CAM 1 MODULECONNECT TOA SWITCHER

TO 750LOAD

Fig. 4

VIDEO OUT

CAM. 1 MODULECONNECTED TO

B SWITCHER

VIDEO OUT

CONT

U11 -A, B and C are used to shut offall lower ranking combinations.

Circuit operationAn example of circuit operation is

as follows: Given the camera isswitched up on A bank of Effects 1,and Effects 1 is switched up onEffects 2. At the same time quad isswitched up on Effects 3. Since thecamera is programmed on Effects 1,the output of U1C goes high and,through U7D and U4A, the inputs toU4D and U5B and D go high. Alsothe inputs to U5C and U6B and Care also high. Effects 1 is pro-grammed on Effects 2 so U3B outputgoes high; U6C output now goes lowbecause of two input highs. If thesecond input to U9B is also low thenU9B out will go high and throughU12A place a high on bilateralswitch U13C. This will switch onEffects 2 video. However, quad isswitched up on Effects 3. Therefore,U3A goes high. This puts two highson U5B. U5B goes low, and if thesecond input to U8C is low then U8Cgoes high and through U12B puts ahigh on bilateral switch U13B. Thisswitches Effects 3 video on. U8Cgoing high has placed a high on thesecond input o U9D, U9C and U9B.This forces U9B output to go low,which turns off Effects 2. In likemanner the IC chain of OR gatesU10 and U11 will pass the highsdown the chain and will shut off alllesser -ranked combinations.

So far we have had at least twopieces of information for each logicdecision. What about the cameraprogrammed on an effects bus andthe effects bus is not programmedon any other bus? If this is truethen the end of the OR gate chain

81

LAT.SW

OUT

CAM 1 MODULECONNECTED TO

C SWITCHER

CONT

VIDEO OUT

RI

LATSW

A SW

+6V

MASTERCONTROLPOSITION

I SW

C SW

OUT

> -OwLINEARAMP

Fig. 5

U10 and Ull will be low.Thisinformation can be used in asmaller logic circuit. A low at theend of the chain will place a highthrough U17C to the third input ofU16A, B, C AND gates. If thecamera is programmed on all threeeffects then number one input ofU16A is high and U16A out goeshigh. This high is coupled to U13Band turns Effects 3 on. At the sametime U17A and B go low forcing alow on 16B and C outputs andturning off Effects 2 and 1. If thecamera is cleared off Effects 3 thenU16A goes low shutting off Effects 3.U16A going low will cause U17A togo high. U16B will then go high toturn on Effects 2. U16B going highwill cause U17B to go low, keepingEffects 1 off. If the camera iscleared off Effects 2 then U16B goeslow, shutting off Effects 2 and U17Bgoes high. U16C goes high and turnson Effects 1.

The four video inputs are termi-nated and then distributed to likepins on each camera logic module.The output of the bilateral switch issent to a linear IC wired as a unitygain line driver which then feedsthe viewfinder or, in the case of acamera working with more than oneswitcher, it is sent to a secondbilateral switch selector. This selec-tor can be used to determine whichswitch output. A sketch of this setupis shown in Figure 5; the amplifier,shown in Fig. 4, uses a CA 3029A.

The switches on the sensinginputs associated with the presetbus are for the purpose of discon-necting the preset bus from thesystem in case the preset bus isgoing to be used for some purposenot related to on -air switching, suchas switching studio monitors, etc.The LED indicators are on the frontof the module and indicate whicheffect is switched on. All sensingpoints, except the six marked Cl,are paralleled to all boards. The sixmarked C1 are connected to Camera1, 2, 3 or 4 tallys depending on thecamera logic board.

To summarize, there is a cameralogic board for each camera feedinga switcher. There is a separategroup of camera boards for eachswitcher. The power supply is +6and -6V.

All switcher camera button tallylow sides were brought out to aWinchester connector and sent tothe logic unit via 23 pair cable. Theunit is arranged in a Bud logicboard nest with power supply, fourcamera boards for switcher A, fourboards for switcher B and aswitcher selector board. A thirdswitcher with single effects is alsofed into the selector board. E]

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business news

Hancock named presidentof Intertec Publishing

The appointment of R.J. Hancockas president of Intertec PublishingCorporation, publishers of Broad-cast Engineering, Video Systems,Radio y Television and ElectronicServicing magazines, among others,was announced in August by DavidS. Davidson, director-operations,consumer services, publishing andhome products for ITT.

Hancock joined Intertec in 1960and had been executive vice presi-dent since 1979. He succeedsGeorge H. Seferovich, who retiredafter 32 years with the company.

Previously, Hancock was publish-er of Intertec's Landscaping Groupof magazines and advertising salesmanager for various Intertec publi-cations, including Broadcast Engi-neering.

He received a bachelor of sciencedegree in advertising from Oklaho-ma State University.

Seferovich's positions with Inter-tec had included that of editorial

Jack Hancock (left) with former presi-dent George Seferovich.

director of Broadcast Engineeringand Electronic Servicing magazines.He created several other publica-tions, including Video Systems mag-azine.

BE staff expandsKevin Kious has been named

managing editor for Intertec Pub-lishing Corporation's ElectronicGroup magazines, Broadcast Engi-neering, Radio y Television, VideoSystems and Electronic Servicing, itwas announced in July by GeorgeLaughead, group publisher.

A graduate of the University ofKansas School of Journalism, wherehe was editor of the 18,000 -circula-tion daily student newspaper, Kiousmost recently was news editor ofBoxoffice, a national weekly busi-ness publication for the motionpicture industry.

Previously, he worked for theOakland Press, a daily newspaperin Pontiac, MI.

Control Video expandsControl Video has moved its

headquarters from Sunnyvale toCampbell, CA. The move wasprompted by the needs of anexpanding manufacturing operation.The company manufactures a line ofsoftware -based, micro -processor -controlled SMPTE readers, writersand VTR controllers.

AM and FM transmitter lineJ. 0. Weldon, president of Conti-

nental Electronics, Dallas, has an-nounced the company's plan toexpand its current line of radiobroadcast equipment with the addi-tion of both AM and FM transmit-ters, along with mono and stereostudio consoles and related equip-ment.

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66 Broadcast Engineering October 1980Circle (51) on Reply Card

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system with reels and cassettes.1 inch type B format according toSMPTE/EBU operating in al TV

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Circle (52) on Reply CardOctober 1980 Broadcast Engineering 67

Business news

Continental's transmitter productline will be enlarged to include lkWthrough 50kW AM transmitters and1kW through 50kW FM transmitters.

The new line was available Octo-ber 1. The change is a result ofContinental's recent purchase ofCollins Broadcast Products, andlicense to manufacture same, fromRockwell International.

New businessCanter -Redman Technologies is

announcing the opening of its elec-tronic engineering and consultingcompany at 321 West 44th St., inNew York. Canter -Redman experi-ence is in the audio and videofields, concentrating on prototypedevelopment and specialized audioand video equipment.

Designers see AVA in actionA public demonstration of the

Ampex Video Art system for televi-sion graphic artists and operatorswas held at the Montreal conventionof the Broadcast Designers' Associa-tion.

Ampex engineers and graphicartists from KTVU-TV, Oakland,

CA, and the Canadian BroadcastingCorporation provided the broadcastdesigners with extensive demonstra-tions and operational workshops onthe AVA system during the four -daymeeting.

MergerThe stockholders and officers of

Allison Research, Valley Audio andValley People announced the com-pletion of negotiations to merge.

The operation will be known asValley People Inc.

Norman Baker has been namedpresident of the combined corpora-tions. Baker has served in thecapacity of vice president/generalmanager of Allison Research for thepast four years, and will be respon-sible for executing the administra-tive affairs of Valley People. BobTodrank, founder and past presi-dent of Valley Audio, was namedexecutive vice president, and willprimarily be in charge of marketingoperations and studio consultation.Gary Carrelli will retain his title asa vice president of Valley Peopleand will coordinate systems engi-neering, installations and repair/maintenance services. Paul C. Buff,founder and past president of Alli-son Research, will be named a vicepresident.

Concurrent with the merger, theformation of a satellite corporationdedicated specifically to new prod-uct development will be named PaulC. Buff, Inc.

Satellite televisioncorporation formed

COMSAT General Corporation an-nounced formation of a subsidiary,Satellite Television Corporation, asits vehicle to pursue the develop-ment and offering of a satellite -to -home subscription television service.The proposed service would offermultiple channels of entertainmentand information to US consumersfor a monthly subscription fee, andwould supplement existing commer-cial television service available toAmerican viewers.

Quantum Audio Labsacquires Audio Logic

Quantum Audio Labs has ac-quired Audio Logic. Audio Logic'soperation will be consolidated intothe Quantum Audio Labs' factoryfacility in Glendale, CA.

Sales and service for both productlines will be handled out of theGlendale facility; Audio Logic willoperate as a wholly owned subsidi-

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ary of Quantum Audio Labs, Inc.Audio Logic's product line includesthe Discorama professional discomixing console and specialized sig-nal processing and monitoringequipment and will include expan-sion into advanced live music mixingsystems.

ProTech Audio movesProTech Audio, formerly of Lake

Ronkonkoma, NY, has moved to newheadquarters, in the FlowerfieldIndustrial Park, on the North Shoreof Long Island. The new addressand phone number are: FlowerfieldBldg. #1, St. James, NY 11780 (516)584-5855.

California Microwave acquiressatellite transmission systems

California Microwave announcedit has completed the acquisition ofSatellite Transmission Systems, aNew York supplier of turnkey digitalsatellite earth stations.

California Microwave acquiredthe remaining 80°/o interest in STSby purchasing 800,000 outstandingshares for an initial payment of$2.3 million ($1.7 million cash and44,276 shares). Two additional pay-ments will be made, based on STSpre-tax earnings in 1981 and 1982.

Each additional payment, which inno event will exceed the initialpayment, may be made wholly orpartially with common shares.

Audio Plus VideoInternational acquires

Worldwide Video ServicesAudio Plus Video International

has acquired Worldwide Video Ser-vices, which for the past two yearshas served as the marketing andsales representative for Audio PlusVideo in the United States.

Under the new arrangement,WVSI will operate as a whollyowned subsidiary of Audio PlusVideo.

Broadcast Electronicsacquires ORK

Broadcast Electronics has relo-cated the manufacture of the entireline of QRK broadcast studio equip-ment from Fresno, CA, to itsexpanded Quincy plant. The QRKproduct line, recently acquired byBroadcast Electronics, includes 12 -inch and 16 -inch professional turn-tables, Rek-O-Kut tone arms, pre-amplifiers and audio consoles usedby broadcasting stations and re-cording studios.

Construction has been completedof a 20,000 square foot addition tothe Broadcast Electronics' Quincyplant, which was planned to accom-modate the QRK product line aswell as to provide additional spacefor manufacture of BE's new line ofFM transmitters.

Ampex, Konishiroku formjoint magnetic tape ventureAmpex Corporation and Konishi-

roku Photo Industry Co. Ltd. an-nounced signing a joint agreementto begin marketing consumer videoand audiotape in Japan.

Under the agreement, consumervideo and audiotape will be mar-keted in Japan under the brandname "Magnax" by the end of 1980.Initially, products to be marketed inJapan will be manufactured atAmpex's Opelika, AL, facility. Man-ufacturing for this joint venture in anew facility near Tokyo will begin inSeptember 1981 and is scheduled tobe fully integrated a year later.

A. F. Associatesrepresents MarconiBroadcast Products

A. F. Associates Inc. announcedit has signed an agreement withMarconi Electronics Inc. appointing

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inside this box

Infinitely adjustable Delay Unit makestrimming coax obsolete.

The UN 360 is the modern MATTHEY wayto time Studios /Remote Trucks /Video Equipments.

No Equalisers needed for Video use,they are already built inside.

Data from-

rABILL PEGLER Tel: 914-763-8893

Television Equipment AssociatesBox 260, South Salem, N.Y. 10590


04126S)

SPECIFY

SILVERCELBATTERIES

byrardney Ideal For Electronic News Gathering

...Cameras And VTR Equipment 3 Times The Power...Much Less Weight

The accepted standard ofexcellence, Yardney Silvercels areLIGHTER but MORE POWERFUL.Many more running hours are builtinto Silvercels than any other systemof comparable size and weight.

QUICK CHARGE when neededwithout battery damage. No dischargememory problems. Your camera willnever be out -of -service because ofcharging problems.

Selected by original cameramanufacturers and in demand asreplacement batteries everywhere.Write for catalog.

Vwardney_.ELECTRIC CORPORATION

82 Mechanic StreetPawcatuck, Connecticut 06379(203) 599-1100

A. F. Associates as the exclusivesales representative for all Marconibroadcast studio products. Theagreement is limited to the continen-tal United States. Under the termsof the agreement, A. F. Associateswill be responsible for the sale,installation and servicing of the1 -inch C format VTR as well asaccessories, cameras and standardsconversion equipment.

Name changeNewsmaking International has

changed its name to Dateline Com-munications. The address remains1255 Lincoln Blvd., Suite 300, SantaMonica, CA 90401, (213) 393-9494.

Expanded multi -trackcapacity

Buzzy's Recording Services of LosAngeles is currently installing 45channels of dbx Model 208 noisereduction equipment to supplementand update its multi -track capacity.

Dbx tape noise reduction is alinear -decibel system. It does notrequire critical level -matching foraccurate compression/expansiontracking.

Rees Associates movesRees Associates Inc., architects,

planners, consultants, moved to anew location June 20th. The newaddress is the Magnolia Building atNorthwest 7th and Broadway inOklahoma City.

RCA Americom relocatesRCA American Communications

has relocated its executive, ad-ministrative and engineering officesto a new headquarters building inPrinceton Forrestal Center, Prince-ton, NJ. The move was made lessthan a year after groundbreakingceremonies were held on the com-pany's 7.5 -acre building site. Thenew address is 400 College RoadEast, Princeton, NJ 08540, telephone(609) 734-4000. El

Put yourmoney whereyour Heart is.

UAmericanHeartAssociation

WE'RE FIGHTING FOR YOUR LIFE


peoplein the news

One of the electronics industry's highest forms ofrecognition was presented to Charles W. (Charlie)Rhodes, chief engineer, television products, TektronixInc., when he was named a Fellow of the Institute ofElectrical and Electronics Engineer Inc. (IEEE).

Fernseh Inc., the new video corporation formed byBell & Howell and Robert Bosch, has announced theappointment of Dietmar Zieger as vice president,marketing and product management. Zieger will beresponsible for all activities related to the commercialmarketing group.

Charles F. Rockhill has been appointed marketingmanager of Moseley Associates Inc. Rockhill mostrecently was with Drake-Chenault, Canoga Park, CA,as western regional sales manager.

KSDK, Channel 5, St. Louis, MO, has announced theaddition of three to its engineering staff: Jon King,from WTVG-TV, Toledo, OH; Robin Nunnelly, fromKRCG-TV, Jefferson City, MO; and Jim Jackson, fromKWK Radio, St. Louis.

Bernard Lechner of RCA Laboratories has beennamed chairman of the broadcast television systemsteletext subcommittee. Lechner succeeds Robert A.O'Connor, CBS Television Network, who resigned assubcommittee chairman.

James M. Brown, marketing manager of Cohu,Electronics Division, announced that Albert L. Zollerhas been appointed Southeastern United Statesregional sales engineer for the San Diego televisioncamera system manufacturer.

W. H. "Bill" Borman has been named national salesmanager at the ADDA Corporation, Campbell, CA. Hewas formerly product manager at the AmpexCorporation and before that was OEM sales managerfor the Computer Media Division at Memorex.

Jerry Fontenot has been named product manager atthe Orrox Corporation. He will be responsible for TheEdge, the company's new medium-priced computer -as-sisted editing system.

Herbert P. Michels of Livingston, NJ, has been nameddirector of engineering at New Jersey Public Televi-sion. Before joining NJPTV, Michels was an engineer-ing consultant to several clients, including Time Inc.,on matters involving CATV, and broadcast andgeneral communications while participating as partowner/manager of Standard Broadcast Station.

Kimiyasu Kobayashi has assumed the office ofpresident of Toshiba America Inc., Wayne, NJ. Hesucceeds Motoo Shinjo.

Malrite Broadcasting Company has announced amajor organizational restructuring in the Cleveland -based communications company. Gil Rosenwald,current vice president and general manager ofWHK/WMMS, Cleveland, was named vice president -group operations, Malrite Broadcasting. BM Jenkins,currently regional vice president responsible for NorthCarolina Operations (WCTI-TV and Outer BanksCablevision), will also assume responsibility of

rPerfect

If You've Wanted To Put Time Code OnYour Tape, But Can't Afford The HighCost Of SMPTE:

The ES 280 TIME CODEGENERATOR/READER Is For You!

1.1.31P6 WCON OS MOO

I b 12 lb 30'4

The new, low-cost way to provide time infor-mation on all your tapes, ES 280 generates atime code which includes DAYS, HOURS,MINUTES, SECONDS AND TENTHS OFSECON DS.

With the flip of a switch, ES 280 becomes areader, to locate that certain place on thetape.

An Amplitude Control knob is located on therear, so that you can use the 280 with anyrecorder, Video or Audio.

The 280 uses tones that are compatible withthe cue tones used in cartridge recording.

ES 280 COSTS $500.00

ES 281 (READER ONLY) $375.00

Contact us or one of our dealers, and we'll tellyou how you can get your own 280.

(213) 322-2136142 SIERRA STREET EL SEGUNDO, CA 90245


reMle410411M.41001M111411111111110411!().111111041MININKNNIIIM.04111114

WILKINSON ELECTRONICSPeople in the news

AM-250SS SOLID STATE250 WATT AM TRANSMITTER

I

I

I

FEATURES

Not Susceptible To Reacting LoadsLow Operating Cost - Extreme EfficiencyDrawer Construction - Extreme AccessibilityExpandable - Combine two for 500 WattsAvailable at 125 Watts or LessPower Flexible - 115 or 220 volts AC125% Modulation CababilityExceeds U.S. FCC Specifications

The Wilkinson Electronics AM-250SS is an all solidstate 250 watt Am transmitter housed in an attractive24 inch cabinet, 52 inches in height. All components aremounted in two drawers for maximum accessibility andease of maintenance. Space is available in the cabinetfora second transmitter making it possible to combinetwo 250 watt units to obtain 500 watts. It is alsoavailable at any power below 250 watts at a reducedprice.

ELECTRONICS, INC.701 CHESTNUT ST. BOX 738

TRAINER, PA. 19013 TELEPHONE (215)497-5100TWX 510-669-3188 CABLES:WILEC WILEC CHR


Malrite's new television property, WFLX-TV in WestPalm Beach, FL. Murray Green, currently vicepresident and general manager of WNYR/WEZO anddirector of Rochester operations, was named regionalvice president of WNYR/WEZO/WUHF-TV and Mal -rite Television Productions, Rochester, NY. DougBrown, vice president and general manager of KEEY-AM/FM, Minneapolis/St. Paul, has been namedregional vice president of KEEY-AM/FM and WZUU-AM/FM, Milwaukee.

Mike Goddard has accepted a position as nationalsales manager at the Control Video Corporation. Hisresponsibilities include developing a sales strategyand setting up dealerships for the company's recentlyintroduced line of SMPTE readers, writers and VTRcontrollers.

Hitachi Denshi America announced that Jerry Brinna-combe, currently Cincinnati regional manager, is tobecome Midwest regional manager. Replacing Brinna-combe is Skip McWilliams. McWilliams was previous-ly with Klopf Audio Video in the position of field salesmanager and before Klopf was with JVC as districtmanager for the Ohio territory.

Otari has appointed Michael Pappas to the newlycreated position of field sales engineer, broadcastindustrial sales specialties.

QUICKCONNECTIONS

Specify Lemo when ease of connection anddisconnection is essential. To engage and lock,push straight in. To unlock and disengage, pullstraight out. Simple!

Superb design and workmanship,ruggedness, miniature sizeand high densitymounting,

make Lemothe front panel connector.

Lmizrog,TyP.O. BOX 6626, SANTA ROSA, CA 95406 707/523-0600


new productsLighting control system

A compact microprocessor -basedlighting control system, Colortrack,has been introduced by BerkeyColortran. The lighting control sys-tem is designed for use in televisionstudio, theatrical and trouping ap-plications. It features control of 96dimmer channels and incorporates acolor -coded CRT display that iscolor -coordinated with the opera-tor's control keyboard for easyoperation.


Tetron line of UHF transmittersThe Tetron transmitters from

Townsend Associates employ kly-strons for visual amplifiers andtetrodes for aural amplifiers. The 10and 30kW transmitters employ onetetrode that is driven by a solid-stateIPA amplifier. The 55kW transmitteremploys two tetrodes. The tetrodesare air cooled, thus reducing thevapor or water heat exchangerrequirements.


Spectrum analyzerA new spectrum analyzer, TF2371,

has been introduced by Marconi In-

struments. The analyzer retains allthe features of the TF2370 but ex-tends the frequency range up to200MHz.


Frequency counterThe model 5612 frequency count-

er's sensitivity is typically 10mV-15mV over a range from 100Hz to250MHz and 15mV to 50mV up intothe 450MHz region.

mn

It is encased in a molded cabinet.Its combination carrying handle -stand can be positioned at variousangles to facilitate readability andportability. Accuracy meets all FCCregulati3n requirements for broad-cast, land -mobile, RF and telecom-munications.


Voltage suppressorsA new line of HDA Power Master

transient voltage suppressors isavailable from W.N. Phillips. ThePower Master dissipates destructiveelectrical transients produced byinduced lightning, changing loads,switching SCR drive system, andcycling operation of most electricalequipment.


* 50 DOLLARS OFF!!Act Fast and Save half a hundred on that deluxe Russco AudioMixer you always wantedl Order Now, offer expires Dec.31st. Net 30 days to qualify.

STUDIO/MASTER SOS SALE '9905 channel mono mixer, 4 channels w built-in preamps, Reg.5th channel accepts 5 inputs on switches...Superl Tableor rack mount.STUDIO/MASTER SOSS SALE '1440.5 channel + Stereo mixer, built in monitor amp, cue Reg. 1,490.00switches on any channel...Morel Table or rack mount.

DISCO 421 REMOTE SALE '600.Lightweight, super small 4 channel mixer 12 stereo) Reg. 650.0°solid state, perfect for home recording/remotes.

4.E5isfillOZSEu75690 E. SHIELDS AVE., FRESNO, CAUF. 93727 CALL BARBARA GAUDIN at (209) 291-5591

WingedPortable

PRODUCTIONCONSOLE

For in-house or onlocation-a completeproduction facility in onecompact portable unit.Ample 42" of rackspace puts all yourequipment withineasy reach. Largeselection of modularcomponents offer manyvariations.

For full -line catalog ofediting, productionand dubbingconsoles, tape andfilm trucks, film and MODEL

videotape storagesystems, call or write:

THE WINSTED CORPORATION8127 Pleasant Ave So. Minneapolis, MN 55420 612'888-1957

THE MATCHMAKERSfor the customized approachto videoproduction centers.

Phone Toll -Free1-800-328-2962

830

WinstedCircle (71) on Reply Card Circle (72) on Reply Card


Reel to Reel

Sequential Controller

Random Selector

Kartel

Reel to Reel

19" Rack

Mini One Bay...an economical automation system thatprovides short walk away time. BC's pro-grammable 1600S Sequential Controllergives access to 16 events - expandableto 32 - from up to 9 repeatable audiosources. Programmable clock repeatsstation format in 15 and 30 minute or 1hour segments. Audio monitor alarm.Complete stereo system $9225. F.O.B.plant.

BROADCAST CONTROLS9155 Brookville RoadSilver Spring, Maryland, 20910(301) 587-3505


f$adio Tap?for professionals

REEL TO REEL TAPEAmpex, 3M. All grades.On reels or hubs.

CASSETTES, C -10-C-90With Agfa, TDK tape.

LEADER & SPLICING TAPEEMPTY REELS & BOXES

All widths, sizes.

Competitive!Shipped from Stock!

Ask for our recording supplies catalog.

Poly 312/298-5300Corp.233 Rand Rd. Des Plaines, IL 60016

New products

SwitcherThe 250 P/N (PAL/NTSC) from

Vital is for use in television studios,production centers, remote controlunits, educational settings and num-erous other television applications.

I114.111.FI .11B.:118=I!11.617;,,,,i1r,37 1,171!11-t#IT4'1) r'e''.

AL,

k4 -t-3-4-4-4-1-1 -1

1-4-1-1-1-1-4-.01-3-1-1-1-1-.1-1-4-I -I T

IL -117-7:11

It provides switching, automationand preview capabilities totallyunique to a switcher of its size. It istotally self-contained, easy to oper-ate, economical to maintain andmeasures only 19"x121/4 "x6".


Digital audio delayWang time tunnel models 300 and

700 digital audio delay units withexpand/compress feature variabledelay, no moving parts, low noiseand wide range audio.


ChargerA charger designed for recharge-

able nickel -cadmium battery packshas been introduced by AlexanderManufacturing. The charger is de-signed to recharge up to three BP -20

type battery packs, including thenew Alexander BP20-11A replace-ment pack for ENG/EFP portablevideo cameras. With minor modifica-tions, it can be adapted to rechargeother packs.


Bit error rate test setScientific-Atlanta has introduced

its Series 4650 Bit Error Rate TestSet for serving test requirements ofthe growing DS -3 equipment market.The portable test set has newfeatures to improve field commis -

S 50% OFFG . E. & Sylvania

STAGE & STUDIO LAMPSSAVE By Letting Us BidOn Your Annual Needs! ft)

We prepay trans. on 5200.00 netorders. We allow surface trans.overseas. Your satisfaction guaran-teed. Order today, or write forSltler's complete price sheet.

SUPPLIES, INC.702 E. Washington St., P.O. Box 10-A

Washington, Iowa 52353 Ph. 319-653-2123In Iowa Call 800-272-6459


FREE CATALOG & AUDIO APPLICATIONS

yr-.OPA M PLABS INC

CONSOLESKITS & WIRED

AMPLIFIERSMIC., EO, ACN,LINE,TAPE, DISC, POWER

OSCILLATOR SAUDIO, TAPE BIAS

POWER SUPPLIES1033 N. SYCAMORE AVE.LOS ANGELES, CA. 90038(213) 934-3566

redte ((BE)) con Filo ky Medi

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DON'T LETINFLATIONBLOW IT!

Use your"Dollars and Sense"Send for this free booklet,

and information on howto obtain bulk copies.

George W HaydenThe Advertising Council825 Third Avenue, New York, N.Y. 10022Please send me a free copy of "Dollarsand Sense:' and information for orderingbulk copies.

NAME

TITLE

ORGANIZATION

STREET

CITY

STATE ZIP

SIGNATURE

J

okrMA

public service message of The Advertising Councili$ and The U S Departments of Agnculture, Commerce.

Cki Labor and Treasury Presented by this magazine



sioning, maintenance and produc-tion testing of a T3, 44.736 Mbpsdigital communications transmissionsystem. The Series 4650 is suitablefor design, production and fieldtesting of fiber optics transmissionequipment.


Battery packs and beltsFilm Equipment Service Com-

pany's battery packs and beltsfeature rechargeable sealed lead -acid batteries. Sealed lead -acidbattery units for film and videocameras and 30V lights overcomelimitations and problems of otherbattery systems and offer reliability,ruggedness and long shelf andservice life in performance.


Microphone isolatorTensimount universal microphone

isolators from PoleStar eliminatefloor vibration, shock and mechan-ical feedback that is transmittedthrough microphone stands. Theyaccept any. microphone up to 1-3/8

inch diameter (Tensimount I), or upto 2-5/8 inch diameter (TensimountII), and provide more than 20dB ofmechanical isolation. Tensimountsalso adapt any microphone to fit astandard 3/4 -inch stand.


Spectrum analyzerThe 492P programmable spectrum

analyzer, by Tektronix, provides acost-efficient means of automatingspectrum analysis. The instrumentis fully programmable over theIEEE -488 bus for remote data collec-tion and output, and offers internalprocessing ability to aid commonspectral measurements. The 492P isa programmable version of the 492spectrum analyzer. Both instrumentscover the RF spectrum from 50kHz-220GHz (up to 21GHz in coax, above21GHz using external waveguidemixers). The 492P features a 1000

point waveform memory, a 400 -character input/output buffer, anduses a high-level programming lan-guage.


Multi -channel auto biasingAn exclusive auto -bias accessory

that further enhances the setup ef-ficiency of the ATR-124 multi -chan-nel audiotape recorder has beenintroduced by Ampex. Auto biasingquickly sets the right bias for anytape's characteristics. The ATR-124

equipped with this new accessoryincreases the bias level, stops andstores the correct amount of over -bias as selected. Once bias is setfor a single channel it automaticallybecomes a gauged setting for otherselected channels.


Open reel tape seriesTDK Electronics has introduced

two lines of 1/4 -inch open reelaudiotapes. The GX series is de-signed for studio master use in live

MultibandAudio

Proven Better

More stations are using our device than ever before! Extremeflexibility and clean sounding! Definitely a proven performer.

Applied Technology Corporation -27106 46th S Kent, WA 98031 (206) 854-4486

Circle (65) on Reply Cara

INDESTRUCTIBLE AUDIO MIXER WITH. . .WELL, ALMOST . . .

Everything is recessed withina rugged U -channel. You candrive a truck over it. In intermit-tant use, 100 hrs. battery life!4 mic. mixers, line input, 1kHz.tone, battery -test. True vu meter,600 ohm transformer output @8vu, 90db gain, flat 20-20kHz.,transformer inputs. Headsetjack also feeds unbal. load.Weighs scant 31/4 lb.; less than12" long; beltloop. Accepts ex-ternal 12v d.c. too. Includesstandard XL mic. connectors.

AP;Div., AudioIntl., Inc.

UNLIMITED BATTERY LIFE

.Nrli,asswareiwome...

AMA41

Ultra Audio ProductsP.O. BOX 921 BEVERLY HILLS

CA 90213 213/276-2726


When accuracy Counts...Count on Belar

for 11111/FM/TII MONITORSL.11401. 4.01+

(g)

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rao

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BELAR CALL ARNO MEYER (215) 687-5550ELECTRONICS LABORATORY, INC.LANCASTER AVENUE AT DORSET. DEVON. PA 19333 BOX 826 1215) 687-5550



DON'T BUYANY BROADCAST CAMERA

BEFORE YOU

Look at all 3 before you buy anyvideo camera. Compare the ToshibaPK-39 with the Ikegami HL79 or RCATK76 for picture quality, ease of han-dling, flexibility - enjoy its un-equalled light sensitivity and picturecontrast. Rent a PK-39 for your nextshooting from Miller -- the videospecialists. Call or write for moder-ate day and weekly rates.

CT:14 L.MATTHEW MILLERAssoc. Ltd.

Suite 1316, 205 East 42nd Street,New York, NY 10017Telephone: (212) 687-1168 (800) 223-0620Cable VIDEOUSA Telex 238917

VIDEO EQUIPMENT RENTALS SERVICE/REPAIRS VIDEOTAPE EDITING

(68) on Reply Card

World Famous Sescom " MI -Series

Transformers

for Professional Audio Applications

SESCOM, INC.

as Veqas Blvd. 'sorts

New products

music mastering. The LX series isdesigned for use in professionalbroadcast recordings.


Microphone/line distributionamplifier

Modular Audio Products has in-troduced the self -powered rackmountable model 7823 microphone/line distribution amplifier. The 7823

ow

includes the model 4003 transformercoupled microphone preamplifierwith adjustable gain to 65dB, andthe model 4820 balanced outputdistribution amplifier that driveseight 600 lines at +20dBm.


MilliwattmeterThe Termaline RF Milliwattmeter

from Bird terminates and measuresthe output of low power signalsources directly without the use ofcharts. A front -panel range -switchselects one of three ranges,

0-200mW, 800mW and 3W, withoutthe need to transfer crystals. Theunit is designed to measure outputof broadband oscillators, signalgenerators, hand-held transceiversor any low -powered deivce.


Voice logging recorderThe Stancil-Hoffman Corporation

has introduced CRM 5600 voicelogging recorder. The CRM 5600 canrecord up to 56 separate voicechannels for 24 hours a day on asingle reel of tape 1x3600. Loggingrecorders provide documentation

anytime vital voice communicationsare the focal point of a dispute. Forthe broadcasting industry in partic-ular, the log resolves questionsconcerning the length and numberof commercials, program content,music rights and royalties.


Put yourmoney whereyour Heart is.

& AmericanIFHeartAssociation

WE'RE FIGHTING FOR YOUR LIFE



professional advertisersindexservices

VIR JAMESCONSULTING RADIO ENGINEERSApplications and Field Engineering

Computerized Frequency Surveys345 Colorado Blvd.

Phone. (Area Code 303) 333-5562

DENVER, COLORADO 80206Member AFCCE

RALPH E. EVANS ASSOCIATESCONSULTING COMMUNICATIONS ENGINEERS

216 N. Green Bay RoadSuite 208

ThlensvIlle, WI 63002Phone: (414) 242-6000 Member AFCCE

MIDWEST ENGINEERING ASSOCIATES

Consuftiny Elt.91.,2£E71

6934 A N UNIVERSITYPEORIA, ILLINOIS 61614

(309) 692-4233Member AFCCE

SMITH and POWSTENKOBroadcasting and Telecommunications

Consultants

2000 N. Street, N.W.Washington, D. C. 20036

(202) 293-7742

FRANK S. COLLIGANTelecommunications Consultant

Field technical services: A.M. directionals,broadbanding, proofs, rehabilitations, feedsystems, custom components, instrumenta-tion, reradiation, transmitters.

5111 WESTPATH COURTWASHINGTON, DC. 20016

(301) 229-5577

datawunhim:AM FM TV

DirectoriesAllocation Studies

Antenna Design1302 18th St., N.W., Suite 502

Washington, D.O. 20036(202) 296-4790

D. L. MARKLEY& Associates, Inc.CONSULTING ENGINEERS

206 North BerganPeoria, Illinois 61604


McCLANATHAN & ASSOCIATES, INC.Consullorai Entirnerrs

APPLICATIONS & FIELD ENGINEERINGTURNKE,' INSTALLATIONS-RADIO 6 TV

DIRECTIONAL ANTENNA DESIGNP.O. Box 750

PORTLAND, OREGON 97207Phone 503/246-8080 Member AFCCE

TWX 910-464-6112/Frontier

AKG AcousticsADM TechnoogyAmperexAmpex Corp.Anton/Bauer Inc.Applied Technology

52

21, 538-9

18-193375

International Tapetronics

Corp.Leitch Video SystemsLemo USA Inc.Marathon Products Corp.L. Matthew Miller

16

IBC7256

Audio-Technica 41 Assoc. Ltd. 76Automated Broadcast 3M Magnetic Products Corp. ...15

Controls 74 3M Mincom Corp 45Beaveronics Inc. 44 Maxell Corp. of America 49Belar Electronics Lab Inc 75 Monroe Electronics 48Beston Electronics Inc. 66 Moseley Associates 40Beyer Dynamics Inc. 23 Opamp Labs Inc. 74Robert Bosch Fernseh Optek Inc. 43

GmbH 67 Orrox Corp. 35Broadcast Electronics Inc. 62 Panasonic Corp. 50-51, 29Camera Mart Inc. 20 Philips Broadcast Equip.Canon Video 25 Corp. 47Chyron Corp 68 Polyline Corp. 74Continental Electronic Potomac Instruments 60

Mfg. Co 11 Ramko Research 1

Cetec Vega 3 Russco Electronics 73Cinema Products Corp. 7 Sescom Inc 76Dictaphone Corp. 24 Sitler's Supplies 74DBX Inc. 55 Standard Tape Lab Inc. 66Peter W. Dahl Inc. 69 Stanton Magnetics 69Dynair Electronics Inc .13 Studer Revox America Inc. 37ESE 71 System Concepts 65ElectroVoice Inc 22 Tektronix Inc. 5Fiberbilt 62 Telex Comm. Inc 4, 31Fuji Photo Film USA 59 Television EquipmentJohn Fluke Mfg. Co., Inc ..17 Assoc. Inc 70Fujinon Optical Inc. 61 Ultra Audio Products 75Garner Industries 62 Utah Scientific 27Gray Engineering Labs 56 Viz Mfg. Co 54Harris Corp 42 Ward -Beck Systems Ltd. BCHitachi Denshi America Wilkinson Electronics

Ltd. IFC Inc. 14, 72Ikegami Electronics Inc. 57 Winsted Corp. 73JVC 38-39 Yardney Electric Corp 70

Professional Services (Cont.)

CHARLES F. KOCHER, P.E.Consulting Radio and TV Engineer

Allocation EngineeringAntenna Systems

27235 Berkshire DriveSouthfield, Michigan 48076


tA©l@chEN-u@@STATION DESIGN & CONSTRUCTION

TECHNICAL SERVICE APPRAISALS

EOUIPMENT DESIGN' & MANUFACTURING

402 Tenth Avenue, Haddon Heights, NJ 08035

(609) 546-1841

MOVING?Please complete thechange of addressinformation on thesubscription form.

To ensure uninterrupteddelivery to new address,answer all questions onthe form completely.

BROaDricaU


BRomincauAdvertising Sales Offices

NEW YORK, NEW YORKJoe Concert, 4 West 58th St.New York, NY 10019;Phone. (212) 888-1977

KANSAS CITY, MISSOURIJan Winters, P 0. Box 12901,Overland Park, KS 66212;Phone (913) 888-4664

LOS ANGELES, CALIFORNIAHerbert A. Schiff3055 Wilshire Blvd., Suite 630Los Angeles, CA 90010Phone (213) 387-0639

LONDON, ENGLANDJohn Ashcraft & Co., 12 Bear St.,Leicester Square, London, WC2H 7AS,England;Phone: 930-0525Telex: 895-2387

AMSTERDAM, HOLLANDJohn Ashcraft & Co., John J Lucassen,Akerdilk 150A, 1171 PV-BadhoevedorpHollandPhone 2968-6225

TOKYO, JAPANinternational Media Representatives, Ltd ,

2-29. Toranomon 1-chome, Minato-ku,Tokyo 105, Japan,Phone 502-0656

classifiedAdvertising rates in Classified Section are 50

cents per word, each insertion, and must beaccompanied by cash to insure publication.

Each initial or abbreviation counts a full word.Minimum classified charge, $4.00.

For ads on which replies are sent to us kirforwarding (blind ads), there is an additionalcharge of $5.00 per insertion, to cover depart-ment number, processing of replies, and mailingcosts.

Classified columns are not open to advertisingof any products regularly produced by manu-facturers unless used and no longer owned bythe manufacturer or a distributor.

TRAINING

ELECTRONICS DEGREE by correspondence. EarnA.S.E.T., then B.S.E.T. Free brochure. GranthamCollege, 2550 South La Cienega, Los Angeles,California 90034. 2-79-tfn

FIRST PHONE through cassette recorded lessonsat home plus one week seminar in Boston,Philadelphia, Detroit, Atlanta or Seattle. Ourtwentieth year teaching FCC license courses.Bob Johnson Radio License Preparation, 1 201Ninth, Manhattan Beach, Calif. 90266. Telephone213-379-4461. 8-78-tf

SERVICES

ONE STOP FOR ALL YOUR PROFESSIONALAUDIO REQUIREMENTS. Bottom line oriented.F.T.C. Brewer Company, P.O. Box 8057, Pensa-cola, Florida 32505. 7-71-tf

SERVICES (CONT.) HELP WANTEDHELIAX-STYROFLEX. Large stock-bargainprices-tested and certified. Write for price andstock lists. Sierra Western Electric. Box 23872,Oakland, Calif. 94623. Telephone (415) 832-3527.

1-73-tf

TRANSMITTER TUBES REPROCESSED-Save 40to 50%. 3CX2500, 4CX5000, 4CX1 5000 and manyothers. Write for details. FREELAND PRODUCTSCO., 3233 Conti St., N.O., La. 70119, (504)822-922. 6-79-tfn

ANDREW LINE & CONNECTORS READY FOREMERGENCY SHIPMENT ANYWHERE BY AIR.Broadcast Consultants Corp., (703) 777-8660, Box590, Leesburg, VA 22075. 10-79-tfn

COPPER STRAP, Ground Screens and #10 wire,BCA, (404) 487-9559. 1-80-tfn

BROADCAST CRYSTALS for AM, FM or TVtransmitters, frequency change, repair or replace-ment of oven types. Also vacuum types for RCA,Gates, Collins etc. transmitters. Quality prod-ucts, reasonable prices and better delivery! Don'tbe without a spare crystal. Frequency change andservice for AM and FM monitors. Over 30 years inthe business. Eidson Electronic Co., Box 96,Temple, Texas 76501. Phone (817) 773-3901.

7-80-tf

EQUIPMENT FOR SALE

RCA TT-5OAH TV Transmitter, excellent condi-tion, many spares, Channel 10, best offer. RobertHorton (615) 637-1010. 9-80-3t

1800 FEET PRODELIN LINE, 6-1/8 Inch, (191/2foot sections) hangers, elbows, flanges, bestoffer. Robert Horton, (615) 637-1010. 9-80-3t

IKEGAMI-HL-77 camera w/15-1 Ang. lens, ACpac, case, FPR: $17,000. ALSO includes RGBPre -Amp, ROV w/200' cable. Contact Carmi atVideography Company, 8928 Ellis Avenue, LosAngeles, California 90034, (213) 204-2000.10-80-1t

REMOTE TRUCK with four cameras, one 2"recorder, two 3/4" recorders, Grass Valley supportgear, two onboard generators, numerous lights,two audio boards, lots of extras. Check it out!Call Bob or Allen at (312) 972-0078. 10-80-2t

SPECTRUM DISPLAY-Full octave ATC 4550demo unit. New with full warranty. Was $1800.Sell for $950. (206) 854-1004, 12428 23rd South,Seattle, WA 98168. 10-80-1t

EQUIPMENT FOR SALE: Harris FT -80 Solid -StateFM Modulation Monitor and FS -80 Solid -StateStereo Modulation Monitor, Factory Calibrated,January 1980. Mint Condition. $1417.00 For Both.KFMC 507-235-5595 For Information. 10-80-1t

AVAILABLE FOR SALE, one only RCA Trans-mitter, TTU - 1 BLA, complete system lessantenna and transmission line on Channel #24.Will be available probably In September. Contact:Dr. Richard N. Sutton, KIDZ-TV, 500 BroadStreet, Medical Arts Building, Wichita Falls,Texas 76301. 10-80-1t

4 MONTHS OLD-DEMO EQUIPMENT-HitachiFP2OS 3 tube Saticon w/10:1 Fuginon lens,genlock and 9 other accessories...$8450; Pana-sonic 9200A 3/4" VTR...$2375; Panasonic WJ-5500A switcher...$2965; Panasonic WV -5203 trip5" BW monitor...$620; Panasonic CT -1310M 13"CLR monitor...$370. Panasonic NV -8170 VHSeditor player, Panasonic NV -8200 VHS editorrecorder, Panasonic NVA-950 editing controller,Panasonic NVA-820 Interface unit, PanasonicNV -9240 3/4" editing player...$3375. PanasonicNV -9600 3/4" editing recorder...$5225. PanasonicNVA-960 editing controller...$2249. A packageprice can be arranged on the entire lot.Corinthian Video, Indianapolis, Ind. (317) 773-6658 or (317) 984-3776. 10-80-2t

EQUIPMENT FOR SALE: TK-60's, TM -6, Pedes-tals, Cradle Heads, TK-60 Camera Cable, Gatesand McMartin 5 Input Stereo Boards, Lenses-Varatol and other. ALL must go. Contact for offerfor all or any: University of Maryland, Communi-cations Arts & Theatre Department, Tawes FineArts Building, College Park, Maryland 20784,Attention: John Fleetwood. Or call 301-454-2541.

10-80-1t

CHIEF ENGINEER: I.T.F.S. 4 -channel systemserving Catholic education in N.Y. area. DUTIES:Maintain and supervise transmission, productionand field service operation. REQUIRES: 1stF.C.C., experience with production and transmis-sion and supervisory ability. SALARY: Negotia-ble (good growth experience). Send resumes toDept 519, Broadcast Engineering, P.O. Box12901, Overland Park, KS 66212. 10-80-1t

VIDEO ENGINEER: Must have proven ability inall aspects of studio operation including lighting,camera setup and general production operations.Three yrs. TV engineering experience required.Responsible for quality evaluation of video andvideotape productions. Excellent benefits. Sendresume to WHRO, Personnel Dept., 5200 Hamp-ton Boulevard, Norfolk, VA 23508. DeadlineOctober 30, 1980. EOE 10-80-1t

CHIEF ENGINEER for metropolitan Chicago cabletelevision company. Will be building 3 televisionstudios and master controls. Responsibilitiesinclude 3 Hitachi camera remote truck, Chyron,1 -inch C format videotape machines, ENGequipment, and staffing new department. GoodSalary and benefits. Contact: Director of Pro-gramming, Cablevision of Chicago, 655 LakeStreet, Oak Park, Illinois 60302. No phone calls.

10-80-1t

TELEVISION ENGINEERS: Television Engineersneeded for expanding production facility. Musthave 5 years experience in Video, Audio, orVideotape maintenance andlor operation. Sendresume to Personnel Dept., Oral Roberts Evange-listic Association, P.O. Box 2187, Tulsa, OK74171. 10-80-2t

MAINTENANCE ENGINEER needed for 5Kw AM,Class A automated FM In mldwest small market.Good salary, equipment, working conditions.Send resume, references, and salary require-ments to Broadcast Engineering, Dept. 518, P.O.Box 12901, Overland Park, KS 66212. 10-80-2t

TELEVISION BROADCAST MAINTENANCE ENGI-NEER. Transmitter experience preferred. Salarynegotiable. First Class License required. Call orwrite Chief Engineer, WMBB-TV, P.O. Box 1340,Panama City, FL 32401, (904) 769-2313. E.O.E.

10-80-3t

TELEVISION OPERATING ENGINEER for studiooperations. Primary duties-quality control ofsignals and light duty maintenance. First ClassLicense desired. Call or write Chief Engineer,WMBB-TV, P.O. Box 1340, Panama City, FL32401, (904) 769-2313. E.O.E. 10-80-3t

TELEVISION MAINTENANCE ENGINEER: Nearbeautiful Monterey coast. First phone required.Minimum of 2 years television broadcast studioequipment maintenance experience. MaintainTCR-100, reel-to-reel quad, studio cameras andrelated equipment, plus some ENG/EFP mainte-nance. EOE. Send resume to Jim Bassett, C.E.,P.O. Box 81651, Salinas, California 9391 2 (408)422-6422. 10-80-1t

WANTED: CHIEF ENGINEER-For AM/FM facili-ty in growing southwest market. First Phone andexperience with transmitters and studio equip-ment necessary. Would be responsible for coordi-nating FM transmitter move. Excellent oppor-tunity with growing broadcast group for engineerwith ability and desire to advance. Send resume,references and salary requirements to Mike Fox,Box 7488, Amarillo, Texas 79109. 10-80-1 t

TV ENGINEER: Houston independent UHF sta-tion needs a Transmitter Maintenance Engineer.Must have 1st class FCC license and minimum 5years transmitter experience. Will assume re-sponsibility of new facility construction. Sendresume to Metromedia, Inc., P.O. Box 22810,Houston, Texas 77027. We are an equal oppor-tunity employer. 10-80-1t

CHIEF ENGINEER: Vacation climate all yearlong. Management oriented chief needed to runwell equipped engineering department with allthe latest equipment. Some design work. Weappreciate our engineers. Contact General Man-ager, KIII-TV, Corpus Christi, Texas, (512) 854-4733., 9-80-2t

LOOKING FOR GOOD ASSISTANT chief engi-neer, familiar with RCA transmitter-TR 600, TK630 Sony, Phillips engineer. Contact: JimRobinson/WECA-TV, 904-893-3127. 6-80-tfn


HELP WANTED (CONT.)

FIELD ENGINEERLeading internationally known electronicsfirm seeks Field Engineer with heavyexperience in servicing broadcast and CCTVcolor cameras.

Duties include periodic technical training ofcustomers, engineering back-up for sales-man on product demonstrations, resolvingtechnical problems pertaining to camerainstallations in the customers facility andanswering telephone inquiries from dealersand product users.

You will be based in the Metropolitan NewYork area, travel -40%, office -60% of thetime. Position reports to Marketing Man-ager. Fringes include car.

Please send resume and salary requirements to

Broadcast EngineeringDept 517P.O. Box 12901Overland Park, Kansas 66212

TELEVISION HELP WANTED-TECHNICAL:$40,000+ FIRST YEAR GUARANTEED. Ourcompany has grown so quickly in the past 5years, we ars in desperate need of a very specialperson who knows broadcast equipment intim-mately and has aggressive sales ability. We arediversifying into other areas and need someoneto take over the equipment sales division. Re-sponsibilities include sales of new and usedbroadcast equipment and further development ofequipment sales division as business demands.We are a first rate company and believe in payingtop dollar for the right person. Call Bill Kitchen,Quality Media Corp., (800) 241-7878. 9-80-TFN

ENGINEERS, TV Systems Engineers, ElectronicTechnicians, Technical Supervisors, Maintenance.Immediate openings. Experienced. Full time, Fullbenefits, plus Pension. Excellent Salary pluscommissions. Send resume to Technical Oper-ations, Inc., P.O. Box 840, New Hyde Park, N.Y.11040, or call Personnel Mgr. (516) 352-2238.

9-80-tfn

TRANSMITTER ENGINEER: Minimum two yearsexperience. First Class License required. Preferhigh power FM or TV experience. Send resume toPersonnel Director, Broadcasting, WSM, Inc.,P.O. Box 100, Nashville, TN 37202. An EqualOpportunity Employer. 9-80-2t

POSITION AVAILABLE-POSITION TITLE: TELE-VISION MAIINTENANCE ENGINEER. REQUIRE-MENTS: First Class FCC license plus experiencemaintaining professional broadcast equipment,particularly RCA and Sony. The location is PrimeSunbelt, the staff progressive, the station public.Salary commensurate with experience. EQUALOPPORTUNITY EMPLOYER. Send resume to:Director of Finance, WYES-TV, 916 NavarreAvenue, New Orleans, Louisiana 70124. 9-80-2t

IMMEDIATE OPENINGS FOR TECH SUPER-VISOR: Mobile Production Company seekingsupervisor for mobile truck. Maintenance requiredfor quad tape, one Inch tape, Grass Valley,Norelco PC -70 cameras. Contact: John Crowe,MCI Productions, #10 Greenway Plaza, Houston,Texas 77046, 713/627-9270. 9-80-2t

BROADCASTSYSTEMS

PROFESSIONALS

WALSHBroadcast Placement Service

The Commons WestDept. B

638 Newtown Yardly RoadNewtown, PA 18940 USA

An Equal Opportunity Employer M/F

If you're involved in the growing field of broadcasttechnology, you know that only a handful ofcompanies are responsible for decades of progressand innovation. Our client is at the top of that smallgroup. Their name appears on broadcast equipmentfound almost everywhere in the world. Their traditionof excellence and imagination has been known andrespected from the time the broadcasting industrybegan. With the help of talented people like you, theycan continue to build on that reputation in thedecades to come.

Our client has specific openings for Design Engineerswho can design state-of-the-art camera and antennasystems. You will need either a BSEE or BSME,preferably with experience in broadcast equipment.

They are also looking for Field Project Engineers forworld wide assignments. You should be interested indirecting technical projects in a field that extendsaround the world. You should 'be willing to travel atleast 50% of the time. To qualify you must have anunderstanding of the latest generation of T.V.broadcast equipment.

You will receive an excellent compensation packagewith top salaries and a complete benefits program. Ifyou are interested in working with a leadingmanufacturer of broadcast equipment in one of thepositions described above, or if you are qualified inother broadcast equipment areas, contact us bycalling collect (215) 968-0707, or send us yourresume.


HELP WANTED (CONT.) HELP WANTED (CONT.) HELP WANTED (CONT.)

ElectronicRachnicianOMS, Inc., a subsidiary of RCA, has animmeciate opening for an ElectronicTechnician. Must be able to repair,maintain, and install TV Broadcastequipment; recommend designoptions; and prepare engineeringchange proposals for militarycustomer. Must also be able to installcables and wiring and integrateelectrical equipment. Must knowwiring diagrams, wire lists, and workfrom engineering drawings. Theseposition assignments are located atPatuxent River Naval Air Station, MDon the Chesapeake Bay.

Please send your resume and salaryrequirements to:

Mr. W. StrayerRCA Service Company5260 Port Royal RoadSpringfield, VA 22151

Or call Mr. Strayer at (703(321-8900,weekdays.

RCA/OMS,INC.A Tradition On The Move!

Equal Opportunity Employer

SYSTEMS/PROJECT ENGINEER-We are a hightechnology electronics manufacturing systemsand service company providing quality audio andvideo equipment for the broadcast industry. Weare currently seeking candidates with 3-10 yrs.exp. in fixed and/or mobile electronic broadcastsystems who will participate in equipmentdevelopment from concept through installationand final testing. A desirable requisite is at least2 yrs. electronical education or a BS degree.Qualified applicants, please send resume andsalary requirements to: Corporate Recruiter, P.O.Box 7760, Burbank, CA 91505. 10-80-21

CHIEF ENGINEER: Small/medium market stationseeking aggressive, qualified Chief Engineer;must be familiar with AE600's, TK-76/BVU-100,TCR-100, RKP-45, TK-46, parallel GE transmit-ters, as well as microwave systems; 10 years +experience; salary DOE. Send all replies toBroadcast Engineering, Dept. 516, P.O. Box12901, Overland Park, KS 66212. 10-80-1t

CHIEF ENGINEER: with automation experienceand good maintenance habits who keeps orderlyrecords. Call WCCF/WQLM, Punta Gorda, Flori-da. EEO Employer. 813-639-1188. 10-80-2t

ENGINEER/TECHNICIAN, ELECTRONIC: Cam-pus Instructional TV needs full time person tooperate, maintain, modify network. Equipmentinvolved: TV cameras, switchers, VCR, STL,transmitters, test equipment, etc. Requirements:FCC first class radio/telephone license, AA elec-tronics or equivalent; ability to climb 60 ft.antenna tower; ability to lift/carry 100 poundboxes. Hold valid driver's license. Call: PatBenefiel, (415) 497-4749, Personnel Department,STANFORD UNIVERSITY, Stanford, CA 94305.Equal Opportunity Employer Through AffirmativeAction. 10-80-1t

THE REX HUMBARD MINISTRY has immediateopenings for experienced video operator/engineerand videotape maintenance engineer with experi-ence on late model RCA. Please send resumewith salary history to T. Holleron, 2690 StateRoad, Cuyahoga Falls, Ohio 44223. 10-80-2t

SAN FRANCISCO BAY AREA. Competent main-tenance and/or production engineer with goodmanagement skills. Experienced as C.E., state-of-the-art audio and RF, digitals, etc. Bill Motley,231 Hartford, San Francisco, Ca. 94114. 10-80-1t

EVANGELICAL MINISTRY-studio maintenanceengineer-immediate opening-must have firstphone, experience with TR 600 quad TK-45cameras, etc. Minimum two years broadcaststudio equipment maintenance experience. Goodsalary, benefits, growth potential for qualifiedperson. Send resume: David Hall, Chief Engi-neer, WHFT-TV 45, 3324 Pembroke Road, Pem-broke Park, Florida 33021. Equal OpportunityEmployer. 10-80-1 t

CHIEF ENGINEER for independent video produc-tion facility. At least 5 years direct maintenanceexperience, systems design and installation.Extensive knowledge of state of the art equip-ment including 1" type "C" VTR's, TBC, colorcameras, computer editing, switchers, etc. Posi-tion requires a self motivated individual withmanagement skills. Contact Stu Lefkowitz, VPS,1212 Tenth Street, Berkeley, California 94710.415/526-6741. 10-80-1t

TELEVISION ENGINEER: Staff engineer for newPBS station operating on Channel 6. Installation,bench repair and some master control operation.First class FCC license required. ContactPersonnel Office for application. Call John Brad-ley 816-429-4127 for information regarding quali-fications. Centra Missouri State University is anEqual Opportunity, Affirmative Action Employer.

10-80-2t

ENGINEERING MANAGER: Newly created open-ing exists with major manufacturer of Radio Fre-quency supplies to administrate all facets ofEngineering Division. Candidate should have atleast five years experience in plant and/or projectengineering administration. Experience in de-velopment of RF/Analog Circuitry strongly de-sirable. Excellent salary plus comprehensivebenefits. Submit resume in strict confidence to:Director of Personnel, PLASMA -THERM, INC.,Route 73, Kresson, NJ 08053. 10-80-1t

',,ENGINEERINGPOSITIONS

We specialize in the placement of TVand Radio Engineers with BroadcastStations, Manufacturers, IndustrialTV, Production Facilities and Dealers;all level, positions and locationsnationwide. Professional, confidential- no fee. Best Industry reputation -

over 1000 client contacts. To discussyour employment possibilities phoneAlan Kornish at 1717)287-9635 or sendyour resume' now. Employer Inquiries

invited.

_ systemsANEW BRIDGE CENTER, KINGSTON, PA 18704

International Opportunitiesfor Audiovisual Services

The King Faisal Specialist Hospitaland Research Centre has currertopenings in its Audiovisual Depart-ment. The Hospital is a 250 bedspecialty referral facility with arapidly expanding Audiovisual De-partment.

The following positions are avail-able:

Television Engineer-B.S. Degree inElectronic Engineering with 5 ormore years practical experience inmaintenance and repair of televisionand video systems. Thorough under-standing of system set-ups and useof test equipment.

Television Technician-AssociatesDegree in Electronics or 2 yearstrade school and 5 years relevantexperience including 2 years inmaintaining and repairing televisionand video systems.

Both positions offer exceptionalbenefits including 30 day annualvacation, transportation, furnishedhousing, bonus pay and more.

Interested, qualified candidatesshould submit a resume with currentsalary to:

Linda HoginHospital Corporation International

International RepresentativeOne Park Plaza

Nashville, TN 37202

An Equal Opportunity Employer

TODAY VIDEO! TOMORROW THE WORLD! Ex-citing new post production facility looking for theright color corrector. Affiliated with a well -established animation house. Excellent workingconditions. Fabulous benefits. Once in a lifetimeopportunity! Please contact: Dave Seeger, TodayVideo, Inc., 45 W. 45th Street, New York, N.Y.10036, (212) 391-1020. 10-80-1 t

POSITION: Chief Engineer. DUTIES: Plan, installand supervise video -audio equipment needed fornew production studio associated with state ETVnetwork. REQUIRES: First Class ticket, highschool graduate, Associate Degree in electronicsdesired, experience in Installation, maintenance,operation of television studio technical produc-tion equipment. SALARY: Commensurate withexperience. CONTACT: Hazel Fournier, MobileCounty Public Schools, P.O. Box 1327, Mobile,AL 36633. Equal Opportunity Employer. DEAD-LINE: October 22, 1980. 10-80-1 t

WANTED

WANTED: Pre -1926 radio equipment and tubes.August J. Link, Surcom Associates, 305 Wiscon-sin Ave., Oceanside, Ca. 92054, (714) 722-6162.

3-76-tf

HIGHEST PRICES PAID for 112 Phase Monitorsand for clean, 12 year old or less, 1 KW and 10KW AM Transmitters. All duty and transportationpaid. Surplus Equipment Sales, 2 ThorncliffePark Dr., Unit 28, Toronto, Ontario, Canada, M4H1H2. 416-421-5631. 2-79-tfn

INSTANT CASH FOR TV EQUIPMENT: Urgentlyneed transmitters, antennas, towers, cameras,vtrs, color studio equipment. Call toll free800-241-7878. Bill Kitchen, Quality Media Corpo-ration (In Georgia call 404-324-1271). 6-79-tfn

WANTED: Radio Transcriptions 16" E.T.'s, anyEddy Arnold, or other Country 16" or 12" Trans-criptions. Will consider others. Interested inRadio Station Libraries to purchase, all speeds ofrecords. Boyd Robeson, 2425 W. Maple, Wichita,Kansas 67213. (316) 942-3673, 722-7765 Eve.

9-80-tfn

URGENTLY NEEDED12AP4 (1803-P4)picture tubes and parts for R.C.A. TRK-12antique television. Arnold Chase (203) 521-5280.

9-80-5t

WANTED! Transmitters. The Transmitter Compa-ny, Ellis Road, Rossville, Georgia 30741. Col. JaySadow, 404-866-3855. 10-80-1t

NEEDED: FM and AM transmitter, 4 bayantenna, tower, coaxial cable, and studio equip-ment. Missionary station-donation tax deducti-ble. James Cunningham Assn., Box 711, Carls-bad, N.M. 88220, (505) 887-3809. 10-80-1t

WANTED: Two Sony DXC-1200 cameras in topoperating condition. Write J. Vaughn, AUDIO -ACTIVE INC., R 1, Hwy. 304W, Delaplains, AR72425. 10-80-3t


10011C0SYNC MR UNI141011

SELTECH Equipment Ltd.Rose Industrial Estate,Cores End Road,Bourne End,Bucks SL8 5AT,England

SRC, WM

SYNC GCNCIA,OR

15,160Nno10 3.00.COE. SYNCctataai

I LEITCHi'rtkirt.,./ ../t. all I CIO% I et 11110i0,1%

Advance Automation Pty. Ltd.6 Dansie Street,Green slopes,Queensland,Australia 4120

MORE THAN3700 OF OURNTSC OR PAL

SYNC GENERATORSARE NOW IN USEIN OVER THIRTY

COUNTRIES AROUNDTHE WORLD.

Leitch Video Inc.1051 Clinton Street,Buffalo, N.Y. 1420EU.S.A.Tel.: (716) 852-1535

Circle {2) on Reply Card

Leitch Video Ltd.705 Progress Avenue,Scarborough, Ontario,Canada - M1H 2?C1Tel.: (416) 438-5060Telex: 065-25420

100 Huntley S

:reet, known to

millions of television view

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Ward -B

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Ward -B

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