M3SR Series 4100 Selecting the Signal Squelch Subtone Frequency
3.206 Operating Manual 6175.4760.02 – 01
3.9.4.3 Selecting the Signal Squelch Subtone Frequency
Softkey Softkey Type Description
Listbox 1. Press 'SQL Tone' softkey.
2. Select desired frequency from listbox.
3. Press 'ENT' to confirm.
Possible values (in Hz):
67 - 69.3 - 71.9 - 74.4 - 77 - 79.7 - 82.5 - 85.4
- 88.5 - 91.5 - 94.8 - 97.4 - 100 - 103.5 - 107.2
- 110.9 - 114.8 - 118.8 - 123 - 127.3 - 131.8 -
136.5 - 141.3 - 146.2 - 151.4 - 156.7 - 162.2 -
167.9 - 173.8 - 179.9 - 186.2 - 192.8 - 203.5 -
210.7 - 218.1 - 225.7 - 233.6 - 241.8 - 250.3
Default value:
100 Hz
The signal squelch is supported in modulation
modes F3E, H3E and A3E.
When enabled, the audio signal is unmuted
only in case of reception of the predefined sig-
nal tone. On the other hand, the transmitter su-
perimposes that signal tone frequency as well.
The subtones within a network should be set
to identical values.
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