Specifications

• Calling again too soon after the original call may corrupt an incoming reply
from the called station. The called station may be able to hear, but be
unable to reply, or may not hear the reply. Make one last call ending with
‘NOTHING HEARD OUT’. The other station can then call back when in
a better position to do so.
• For mobile units, when possible find a non obstructed area before
transmitting and if feasible stop the vehicle.
Radio discipline
It is very important that there is good radio discipline on all HF/VHF networks.
Network Controllers (radio operators manning the radio rooms) should lead by
example (set the standard others will follow).
A commonly understood format is necessary on radio networks. This is achieved with
procedures designed to ensure order and discipline.
The main principle differs little, no matter what system of communications and
regardless of the frequency being used. There are various conventions of procedure,
which are particular to some services, but in general they are all similar.
Use amateur expressions and you will be deemed an amateur.
Radio operators are responsible for monitoring the radio networks and react whenever
radio discipline is violated. The person who is violating radio procedures is to be
reminded to maintain radio discipline. If this is repeated, their communication
privileges may be revoked.
UN communication networks have many users, and everybody is to follow the rules
in place.
Rules to be followed:
• Use callsigns and the correct procedures at all times.
• The use of profane, indecent or abusive language is forbidden on all radio
networks.
• No names are to be used, use callsigns. This is for user safety and security.
• No private conversations are allowed. UN networks are not chatting
channels, if this occurs, the operators should instruct the user to use other
means to communicate. Example phone, fax etc.
• Keep the messages short; there are other users who want to use the net.
• Use a moderate voice. Speak clearly, a little slower than normal, but do not
shout.
Radio Operators Training Manual Version 27/11/2007 39