version 2.10 oct 2014 basic radio communications learning outcome 1 understand types of radio...
TRANSCRIPT
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Version 2.10 OCT 2014
Basic Radio Communications
Learning Outcome 1
Understand types of radio equipment used within the Air Cadet
Organisation
Uncontrolled copy not subject to amendment
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Introduction to radio
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Introduction To Radio
• Radio has revolutionised communication
• The Air Cadet Organisation has its own nation wide system of radio stations
• This Network uses High Frequency (HF) for long range
• Communications play an important part in every day life
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Networks (Nets)The word network is used because ....
.... a number of radio stations work together, connected by the invisible strands of a single frequency –
rather like a net
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Networks (Nets)
Directed (or Controlled) NetWhere the control station directs all communications
Free NetWhere each station is free to communicate as it needs
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Directed Net :
• Controlled by the Network Control Station (NCS)
• A group of stations using the same frequency
• Always controlled
• You must ask permission to join and leave the Net
Networks (Nets)
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Directed Net The Network Control Station (NCS) should:
• Have efficient equipment
• Have experienced operators
• Be able to handle the volume of radio communications to be passed
Networks (Nets)
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Free Net
• No NCS (Network Control Station)
• No permissions required
• All stations are “Free” to contact each other
Networks (Nets)
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Free NetMRK 17
MRH 67MRL 47
MRK 92
Networks (Nets)
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Directed Net
• To communicate with another station you must have permission of the NCS
• The NCS will do most of the communicating
Networks (Nets)
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DirectedMRK 17 MRK 92
MRL 47 MRH 67
MRV 92NCS
Networks (Nets)
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Air Cadet Radio Nets
• Enable you to learn and practice procedures
• Techniques are based on allied military procedures
• Assist with our activities and safety
• Do not use non-standard procedures
Networks (Nets)
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Radio Station• A Radio Station is the smallest part of a Net
• It will have at least one radio set
• The set will be able to transmit and receive
• The set is known as a transceiver
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HF Base Station for long distance
Radio Station
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Similar procedures are used for:
• High Frequency (HF) used for long range• Very High and Ultra High Frequencies used for
short range
Directed Nets are more suited for HF
Radio Station
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VHF Communications
Operating from a remote location
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Radio Spectrum
Air Cadet Frequencies are:
• Assigned by the Ministry of Defence
• Are in the following bands:
a) Medium Frequency (MF)
b) High Frequency (HF)
c) Very High Frequency (VHF)
d) Ultra High Frequency (UHF)
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Medium(MF)
High(HF)
Very High(VHF)
Ultra High(UHF)
300Khzto
3Mhz
3MHzto
30Mhz
30MHzto
300MHz
300MHzTo
3GHz
Long Range
Short Range
Radio Spectrum
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Any questions?