Icom IC-7600, Instruction Manual, Page: 76 / 196

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 0 85.4
0 88.5
0 91.5
0 94.8
0 97.4
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-2 F-1
DEF
TONE
XFC
Appears
• Tone frequency set mode