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Radio Communications

Radio Communications. Chapter 1. Introduction to Radio. 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

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Radio Communications

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  1. Radio Communications

  2. Chapter 1 Introduction to Radio

  3. 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 an important part of everyday life

  4. A number of radio stations are working together, connected by the invisible strands of a single frequency - rather like a net. Networks (Nets) The word network is used because

  5. Networks (Nets) • Directed (Controlled) Net • Where the control station directs all of the communications • Free Net • Where each station is free to communicate as it needs.

  6. Networks (Nets) • 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

  7. Networks (Nets) • 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

  8. Networks (Nets) • Free Net • No NCS (Network Control Station) • No permissions required • All Stations “Free” to contact each other

  9. Networks (Nets) MRL 47 MRH 67 Free Net MRK 17 MRK 92

  10. Networks (Nets) • Directed Net To communicate with another Station • You must have permission of the NCS The NCS will do most of the communicating

  11. Networks (Nets) MRL 47 MRH 67 Directed MRV 92 NCS MRK 17 MRK 92

  12. Networks (Nets) • 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

  13. 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 & receive • The set is known a a Transceiver

  14. Radio Station HF Base Station for Long Distance

  15. Radio Station • Should use similar procedures for: • High Frequency (HF) used for Long Range • Very High & Ultra High Frequencies used for Short Range • Directed Nets are more suited for HF

  16. VHF Communications Operating from a remote location

  17. Radio Spectrum • Air Cadet Frequencies are: • Assigned by the Ministry of Defence • Are in the following bands: • Medium Frequency (MF) • High Frequency (HF) • Very High Frequency (VHF) • Ultra High Frequency (UHF)

  18. Radio Spectrum Long Range Short Range

  19. Introduction to Radio End Ready for operating

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