Icom IC-7600

67
4
RECEIVE AND TRANSMIT
■ Tone squelch operation
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 the FM
mode.
w Push [TONE] (MF7) several times to turn the tone
squelch function ON.
• “ ” appears
e Hold down [TONE] (MF7) for 1 second to select
the tone frequency set mode.
r Push [Y] (F-1) or [Z] (F-2) to select T-SQL TONE
item.
t Rotate the main dial to select the desired tone
squelch frequency.
• Hold down [DEF] (F-4) for 1 second to select the
default setting.
y Push [EXIT/SET] to return to the previous display.
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] (MF7) to
clear “TSQL.”
• Available tone frequencies (unit: Hz)
67.0
69.3
71.9
74.4
77.0
79.7
82.5
085.4
088.5
091.5
094.8
097.4
100.0
103.5
107.2
110.9
114.8
118.8
123.0
127.3
131.8
136.5
141.3
146.2
151.4
156.7
159.8
162.2
165.5
167.9
171.3
173.8
177.3
179.9
183.5
186.2
189.9
192.8
196.6
199.5
203.5
206.5
210.7
218.1
225.7
229.1
233.6
241.8
250.3
254.1
F-4
EXIT/SET
Main dial
F-2F-1
DEF
TONE
XFC
Appears
• Tone frequency set mode