UNIDEN Model uh015sx UHF CB Radio
Selective Calling
Group Calling
The uh015sx has the capability to respond to Group Calling and to transmit Group Calling Codes.
Group Calling allows you to call members of your group simultaneously. However, to do this, you need to follow a certain format when programming your TX Selcall ID.
TX Selcall ID Format
To call | Transmitter SELCALL ID |
10 radios | [X] [X] [X] [X] [A] |
100 radios | [X] [X] [X] [A] [A] |
1000 radios | [X] [X] [A] [A] [A] |
10000 radios | [X] [A] [A] [A] [A] |
where: [X] is a common Selcall ID prefix of your group - and - [A] is the CCIR Assigned Group Tone Code
Example:
If one group comprises 10 members with Selcall IDs the ID numbers could be as follows -
Group ID # Individual ID#
[1] | [2] [3] | [4] | [0] | |
[1] | [2] [3] | [4] | [1] | |
[1] | [2] [3] | [4] | [2] | |
[1] | [2] | [3] | [4] | [3] |
to - |
|
|
| |
[1] | [2] | [3] | [4] | [9] |
all in TSQ mode at CH20
If someone transmits [1] [2] [3] [4] [A] on 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 |
Acknowledge tones will not be received when a Group Call code is transmitted. If all radios respond, acknowledge tones would only ‘litter’ the channel with crisscrossing signals.
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