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TX SELCALL ID Format
To call
Transmitter SELCALL ID
10 radios
100 radios
1000 radios
10000 radios
[xl [xl [xl [xl [AJ
[xl [xl [xl [AJ [AJ
[xl [xl [AJ [AJ [AJ
[xl [AJ [AJ [AJ [AJ
where: [xl is a common SELCALL ID prefix of your group and,
[AJ is the CCIR Assigned Group Tone Code
example:
If one group comprises 10 members with SELCALL IDs.
ranging from
[1J [2J [3J [4J [0],
[1J [2J [3J [4J [1],
[1J [2J [3J [4J [2],
[1J [2J [3J [4J [3J,
to
[1J [2J[3] [4J [9],
All in T.SQ modeat CH20.
If someone transmits [1J [2J[3J[4J[AJon CH20, all of the above units will open
their Tone Squelched Receiver.
Group Calls and ordinary SELCALLs can be differentiated in the following
manner.
Group Call - Low tone beeps
Ordinary Selcall - High tone beeps
Note: Acknowledge tones will not be received when a Group Call code is transmit-
ted. If all radios respond, acknowledge tones would only "litter" the channel
with crisscrossing signals.
To use the Group CalJing Feature effectively, your RX SELCALL ID should be
well arranged and assigned.
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