The entire call number is transmitted by consecutive tones in decade sequence.
|
Parameter |
Value |
|
Frequency range |
VHF/UHF |
|
Operation modes |
Analogue Selcal |
|
Modulation |
FM, SUB Tones |
|
Receiver settings |
FM, BW = 12 kHz |
|
Input format(s) |
AF, IF |
The entire call number is transmitted by consecutive tones in decade sequence.
In most systems the accuracy of the single frequencies has to be within +1/-1.5% of the nominal value.
If a DTMF call is received, the call sign is displayed on the monitor. In the Options menu a Time stamp function can be enabled to add date and time to each call.
Tone Allocation
|
Digit |
Hz |
Digit |
Hz |
|
0 |
941/1336 |
8 |
852/1336 |
|
1 |
697/1209 |
9 |
852/1477 |
|
2 |
697/1336 |
A |
697/1633 |
|
3 |
697/1477 |
B |
770/1633 |
|
4 |
770/1209 |
C |
852/1633 |
|
5 |
770/1336 |
D |
941/1633 |
|
6 |
770/1477 |
* |
941/1209 |
|
7 |
852/1209 |
# |
941/1477 |
Tone duration: 70 ms.