Motorola AP 73 User Manual page 27

To perform Signalling Squelch (SelCall ) operation,
the radio must be equipped with an optional DTMF
Decode board .
To temporarily override the default receive squelch
mode for the channel:
SIG
• Press to change between Carrier (CSQ),
A
Coded (PL /DPL) and Signalling (SelCall) squelch
modes.
The "CTCSS" indicator lights up continuously when
the radio is operating in Coded (PL / DPL) mode,
flashes when operating in Signalling (SelCall) mode
and is not displayed when operating in Carrier
(CSQ) mode.
When transmitting in Signalling squelch mode, PL /
DPL is transmitted (unless it is programmed to
'000'). After PTT is released, the radio automati-
cally enters into CSQ mode for a period of time. If
there is no receive activity, the radio resumes Sig-
nalling squelch mode.
Whenever you switch from one channel to the other,
the default squelch mode of the new channel takes
effect.
2-Year Warranty
Additional Operations
NOTE
CTCSS
NOTE
NOTE
NOTE
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