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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.
q
Push [MODE] one or more times to select FM
mode.
w
Select
M4
.
• Push [DISPLAY] once or twice to select
M
.
• Push [MENU] one or more times to select
M4
.
e
Push [
(F-2)
TON
] for 1 sec. to enter the FM tone set
mode.
• Push [MENU] one or more times to select “
T2 TONE
SQL
.”
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)
TON
] once or twice to turn the tone
squelch function.
• “TSQL” appears.
y
Communicate 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]
D
Tone 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.
q
During tone squelch or repeater operation (“T” or
“TSQL” is displayed, select
M4
.
• Push [DISPLAY] once or twice to select
M
.
• Push [MENU] one or more times to select
M4
.
w
Push [
(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.
e
Push [
(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.
r
Push [DISPLAY] to exit the FM tone set mode.
During repeater
operation.
P
O
S1
5
5
3
7
9
20
40
10
60dB
FM T
T3 RPTR-T
SCN
During tone squelch
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
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
D
Tone scan operation