ICOM IC-703 Manuale Utente
43
4
RECEIVE AND TRANSMIT
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.
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.
qPush [MODE] one or more times to select FM
mode.
wSelect M4.
• Push [DISPLAY] once or twice to select
M.
• Push [MENU] one or more times to select
M4.
ePush [
(F-2)
TON] for 1 sec. to enter the FM tone set
mode.
• Push [MENU] one or more times to select “
T2 TONE
SQL.”
rRotate 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.
• Push [DISPLAY] to exit the FM tone set mode.
tPush [
(F-2)
TON] once or twice to turn the tone
squelch function.
• “TSQL” appears.
yCommunicate in the usual manner.
• Push [PTT] to transmit; release to receive.
• Available tone squelch frequencies
(Unit: Hz)
CH
VFO A
P
O
S1
5
5
3
7
9
20
40
10
60dB
FM
TSQL
SPL
M4 VOX TON
T2 TONE SQL
FM
[MODE] Main dial
[DISPLAY]
[MENU]
[F-2]
DTone squelch 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.
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
“TSQL” is displayed, select
M4.
• Push [DISPLAY] once or twice to select
M.
• Push [MENU] one or more times to select
M4.
wPush [
(F-2)
TON] for 1 sec. to enter the FM tone set
mode.
• Push [MENU] one or more times to select “
T3 T-SQL
SCN” during tone squelch operation or “T3 RPTR-T
SCN” during repeater operation.
• If tone squelch function or tone encoder has not been
selected, this item does not appear.
ePush [
(F-3)
SCN] to toggle the tone scan operation
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.
peater tone (or tone squelch tone) setting is
automatically adjusted accordingly.
rPush [DISPLAY] to exit the FM tone set mode.
During repeater
operation.
operation.
P
O
S1
5
5
3
7
9
20
40
10
60dB
FM T
T3 RPTR-T SCN
During tone squelch
operation.
operation.
P
O
S1
5
5
3
7
9
20
40
10
60dB
FM TSQL
T3 T-SQL
SCN
Main dial
[DISPLAY]
[MENU]
[F-2]
[F-3]
67.0
69.3
71.9
74.4
77.0
79.7
82.5
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
103.5
107.2
110.9
114.8
118.8
114.8
118.8
123.0
127.3
131.8
127.3
131.8
136.5
141.3
146.2
151.4
156.7
159.8
162.2
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
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
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
218.1
225.7
229.1
233.6
241.8
250.3
254.1
DTone scan operation