Man 3008 VOX Bedienungsanleitung Seite 18

5.5. AM/FM Selection
You can select 2 modes by pressing the AM/FM button (6):
amplitude modulation (AM) and frequency modulation (FM). To
communicate with other users all radios have to use the same
modulation.
Should you receive radio communication but cannot understand
the other side, please change the mode.
On channels 41-80 only FM can be used. When AM is selected
and the PTT is pressed the display shows „Er" (Error) and the
radio does not transmit.
5.6. Automatic Squelch (ASQ)
The automatic squelch is masking the channel noise, so only
communication is heard. You can activate it by pressing the
ASQ button (10).
Alternatively you can use the manual squelch (3) or CTCSS.
More information about these settings can be found in the online
version of this manual.
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