D Tone Squelch Operation; D Tone Scan Operation - Icom IC-703 Instruction Manual
Hf/50 mhz all mode transceiver
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Also See for IC-703:
- Service manual (78 pages) ,
- Installing manual (5 pages) ,
- Instruction manual (9 pages)
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4
RECEIVE AND TRANSMIT
D Tone squelch operation
Tone squelch operation is a method of communica-
tions using selective calling. Only received signals
having a matching tone will open the squelch. Before
communicating using tone squelch, all members of
your party must agree on the tone squelch frequency
to use.
q Push [MODE] one or more times to select FM
mode.
w Select
.
• Push [DISPLAY] once or twice to select .
• Push [MENU] one or more times to select
e Push [
] for 1 sec. to enter the FM tone set
(F-2)
mode.
• Push [MENU] one or more times to select "
."
r Rotate the main dial to set the desired subaudible
tone frequency.
• See left table for available tone frequencies.
• Push [DISPLAY] to exit the FM tone set mode.
t Push [
(F-2)
squelch function.
• "TSQL" appears.
y Communicate in the usual manner.
• Push [PTT] to transmit; release to receive.
D Tone scan operation
By monitoring a signal that is being transmitted on a
repeater input frequency, you can determine the tone
frequency necessary to open a repeater.
q
During tone squelch or repeater operation ("T" or
"TSQL" is displayed, select
• Push [DISPLAY] once or twice to select .
• Push [MENU] one or more times to select
w Push [
] for 1 sec. to enter the FM tone set
(F-2)
mode.
• Push [MENU] one or more times to select "
" during tone squelch operation or "
" during repeater operation.
• If tone squelch function or tone encoder has not been
selected, this item does not appear.
e Push [
] to toggle the tone scan operation
(F-3)
ON and OFF.
• While scanning, tone frequencies are displayed instead
of the operating frequency.
• When a matched tone is detected, tone scan automati-
cally stops, the matched tone is displayed and the re-
peater tone (or tone squelch tone) setting is
automatically adjusted accordingly.
r Push [DISPLAY] to exit the FM tone set mode.
43
.
] once or twice to turn the tone
.
• Available tone squelch frequencies
67.0
085.4
69.3
088.5
71.9
091.5
74.4
094.8
77.0
097.4
79.7
100.0
82.5
103.5
.
S1
3
5
P
O
S1
3
5
P
O
[MODE] Main dial
[MENU]
[F-2]
[DISPLAY]
FM
FM TSQL
SPL
S1
3
5
7
9
20
40
60dB
VFO A
P
5
10
O
107.2
136.5
165.5
186.2
110.9
141.3
167.9
189.9
114.8
146.2
171.3
192.8
118.8
151.4
173.8
196.6
123.0
156.7
177.3
199.5
127.3
159.8
179.9
203.5
131.8
162.2
183.5
206.5
Main dial
[F-3]
[MENU]
[F-2]
[DISPLAY]
During tone squelch
FM TSQL
operation.
7
9
20
40
60dB
5
10
During repeater
FM T
operation.
7
9
20
40
60dB
5
10
CH
(Unit: Hz)
210.7
254.1
218.1
225.7
229.1
233.6
241.8
250.3
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