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Other SELCALLParameters.
Aside from the Transmitter and Receiver ID, you should also know some of the SELCALL Parameters. Though, this parameters are not frequently changed understanding them will probably help you on your future use.
Tone Period
Tone Period is the duration of one tone in a SELCALL ID sequence. The setting of this parameter depends on your application. On long distance communication for example, where the signal strength of the transmitted information is greatly reduced and affected by noise, it is more advisable
to use longer Tone Period. Long Tone Period gives the decoder more time and information to check and evaluate
the code.
However, BE SURE THAT ALL RADIOS IN YOUR GROUP USES THE SAME TONE PERIOD SETTING. Otherwise
you will not be able to selectively call one another.
Sundowner
To change the tone period setting,
1. Press the @ for about 1.5 seconds. The LCD displays:
[
2.Select your chosen Tone Period setting from the table below.
Key | LCD Display | Tone Period |
0 | PO | 20 mSec |
1 | P1 | 40 mSec |
2 | P2 | 70 mSec |
3 | P3 | 100 mSec |
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