Icom IC-7700, Инструкция по эксплуатации

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4-34
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Tone squelch operation
The tone squelch opens only when receiving a sig-
nal 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.
• “
TSQL
” appears
e
Hold down [TONE]
(MF6)
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 de-
fault 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]
(MF6)
to
clear “TSQL.”
• Available tone frequencies
(unit: Hz)
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