1. Lecture 1
Radio Communications

2. Basic Communications Course
Agenda
Introduction to Radio
Radio Procedures
Radio Equipment

3. Introduction to Radio
Communication is a very important part of everyday life. We constantly need to pass on information, thoughts and ideas from one person to another.
But what methods of communication are available to us?

4. Communication Methods
Verbal
Written
Sign
Telephone
Radio Communications
E Mail

5. Radio Communications A nationwide system of radios exists.
What is this system called?
A Network.
Its called this because a number of radio stations are working together connected by invisible strands of a single frequency- rather like a net.

6. Types of Network Directed Network
A directed net is always “CONTROLLED” by a Network Control Station (NCS).

7. Directed Network Level of control depends on:
The level of radio discipline being observed by those using the network.
Adherence to proper procedures.
The type of network being operated.

8. Directed Network Only one station can be the NCS.
Equipment efficiency.
Operator experience.
Volume of radio traffic to be passed.
The NCS is usually a fixed base station, located in a room specifically for radio communications.

9. Directed Network

10. Types Of Network Free Network Operates without a NCS
Each station is free to contact any other station without permission from the NCS.

11. Free Network

12. Frequencies High Frequency Very High Frequency Ultra High Frequency
Typically the Air Cadet Organisation uses 3 bands of equipment, which are part of the electromagnetic spectrum.
What are these 3 bands?
High Frequency
Very High Frequency
Ultra High Frequency

13. The Spectrum

14. Frequencies allocated to the ATC
High Frequency
Lima 1-9
November 1-3
Hotel 1-7
Oscar 1-3
Tango 1

15. Frequencies allocated to the ATC
Very High Frequency (Victor)
V1 to V14
e.g.
V1 xxxx MHz
V2 xxxx MHz
V3 xxxx MHz

16. Frequencies allocated to the ATC
Ultra High Frequency (Uniform)
U1 to U5
U1 xxxx MHz
U2 xxxx MHz
U5 xxxx MHz
All inside amateur band.

17. Radio related ACP ACP 31 Volume 6. Communications
ACP 35 Volume 3. Advanced Radio and Radar.
ACP 35 Volume 4. Satellite Communications.
ACP 35 Volume 2. Air Cadet Communications Manual (replaced by…)
ACP 44
ACP 44 Enclosure 6. Air Cadet Callsigns.