Icom IC-7700 Instruction Manual - Page 86

Tone squelch operation

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4 RECEIVE AND TRANSMIT ■ Tone squelch operation TONE DEF F-4 ∫ √ AM/FM Main dial F-1 F-2 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) to turn the tone squelch function ON. • " TSQL " appears e Push and hold [TONE] (MF6) for 1 sec. to 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. • Push and hold [DEF] F-4 for 1 sec. to select the default setting. y Push EXIT/SET to return to the previous indication. 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] (MF6) to clear "TSQL." • Available tone frequencies (unit: Hz) 67.0 085.4 107.2 136.5 165.5 186.2 210.7 254.1 69.3 088.5 110.9 141.3 167.9 189.9 218.1 71.9 091.5 114.8 146.2 171.3 192.8 225.7 74.4 094.8 118.8 151.4 173.8 196.6 229.1 77.0 097.4 123.0 156.7 177.3 199.5 233.6 79.7 100.0 127.3 159.8 179.9 203.5 241.8 82.5 103.5 131.8 162.2 183.5 206.5 250.3 4-34

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4-34
■
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 FM
mode.
w
Push [TONE]
(MF6)
to turn the tone squelch func-
tion ON.
•“
” appears
e
Push and hold [TONE]
(MF6)
for 1 sec. to tone fre-
quency set mode.
r
Push [
Y
]
or [
Z
]
to select T-SQL TONE
item.
t
Rotate the main dial to select the desired tone
squelch frequency.
• Push and hold [DEF]
for 1 sec. to select the de-
fault setting.
y
Push
to return to the previous indication.
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]
(MF6)
to
clear “TSQL.”
• Available tone frequencies
(unit: Hz)
EXIT/SET
F-4
F-2
F-1
TSQL
Main dial
F-4
DEF
TONE
F-1
∫
F-2
√
AM/FM
4
RECEIVE AND TRANSMIT
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