Tone Squelch Operation; Pocket Beep Operation - Icom IC-40S Instruction Manual

Tone squelch operation

The tone squelch opens only when receiving a signal con-
taining a matching CTCSS (subaudible) tone. You can silently
wait for calls from group members using the same tone.
q Set the desired channel.
w Set the desired CTCSS tone in set mode.
• See p. 7 for tone frequencies and programming information.
e Push [–] for 2 sec. several times until "T SQL" appears.
r When the received signal includes a matching tone,
squelch opens and the signal can be heard.
• When the received signal's tone does not match, tone squelch
does not open, however, the S-indicator shows signal strength.
• To open the squelch manually, push [–].
t Operate the transceiver in the normal way.
y To cancel the tone squelch, push [–] for 2 sec. twice.
NOTE: The transceiver has 51 tone frequencies and con-
sequently their spacing is narrow compared with units hav-
ing 38 tones. Therefore, some tone frequencies may
receive interference from adjacent tone frequencies.
Tone frequencies and tone squelch ON/OFF settings are
automatically stored in memory channels for easy recall.
TONE SQUELCH OPERATION

Pocket beep operation

This function uses CTCSS (subaudible) tones for calling and
can be used as a "common pager" to inform you that some-
one has called while you were away from the transceiver.
D Waiting for a call from a specific station
q Set the operating channel.
w Set the desired CTCSS tone in set mode.
• See p. 7 for tone frequencies and programming information.
e Push [–] for 2 sec. several times until " T SQL ë" appears
in the function display.
r When a signal with the correct tone is received, the
transceiver emits beep tones and flashes " T SQL ë."
t Push [PTT] to answer or push [–] to stop the beeps and
flashing.
• Tone squelch is automatically selected.
D Calling a waiting station using pocket beep
A subaudible tone matched with the station's tone frequency
is necessary. Use the tone squelch at left or a CTCSS (sub-
audible) tone encoder (p. 7).
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