Tone Squelch Operation - Icom IC-7700 Instruction Manual

4
RECEIVE AND TRANSMIT

■ Tone squelch operation

TONE
∫ √
F-1 F-2
DEF
F-4
AM/FM
Main dial
The tone squelch opens only when receiving a signal
containing a matching subaudible tone. You can
silently wait for calls from group members using the
same tone.
q Set the desired frequency band and select FM
mode.
w Push [TONE]
(MF6)
tion ON.
• " " appears
TSQL
e Push and hold [TONE]
quency set mode.
r Push [Y]
F-1
item.
t Rotate the main dial to select the desired tone
squelch frequency.
• Push and hold [DEF]
fault setting.
y Push
EXIT/SET
u 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 [XFC].
i Operate the transceiver in the normal way.
o To cancel the tone squelch, push [TONE]
clear "TSQL."
• Available tone frequencies
085.4 107.2
67.0
69.3 088.5 110.9
71.9 091.5 114.8
74.4 094.8 118.8
77.0 097.4 123.0
79.7 100.0 127.3
82.5 103.5 131.8
4-34
to turn the tone squelch func-
for 1 sec. to tone fre-
(MF6)
or [Z] to select T-SQL TONE
F-2
F-4 for 1 sec. to select the de-
to return to the previous indication.
136.5 165.5 186.2 210.7
141.3 167.9 189.9 218.1
146.2 171.3 192.8 225.7
151.4 173.8 196.6 229.1
177.3 199.5 233.6
156.7
159.8 179.9 203.5 241.8
206.5 250.3
162.2 183.5
to
(MF6)
(unit: Hz)
254.1