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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.
➀Push [MODE] one or more times to select FM
mode.
➁Push and hold [DISPLAY] to enter Quick Set mode.
➂Push [MENU] one or more times to select item Q7
TONE SQL.
•[Y]/[Z] or [M-CH] can also be used.
➃Rotate the main dial to select the desired subaudi-
ble tone frequency.
•Available tone frequencies are the same as for repeater
tone operation (see previous page).
➄Select M4 and turn the tone squelch function ON.
➥ Push [(F-3)TON] to toggle tone squelch opera-
tion ON and OFF.
•When tone squelch is turned ON, “TSQL” appears in
the display.
➅Communicate in the usual manner.
•Push [PTT] to transmit; release to receive.
By monitoring a signal that is being transmitted on a
repeater input frequency, you can determine the tone
frequency necessary to open a repeater.
➀During tone squelch or repeater operation, push
and hold [DISPLAY] to enter Quick Set mode.
➁Push [MENU] one or more times to select item Q8
T-SQL SCN during tone squelch operation, or
Q8 RPTR-T SCN during repeater operation.
•[Y]/[Z] or [M-CH] can also be used.
➂Push [(F-3)SCN] to toggle 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
repeater tone (or tone squelch tone) setting is automat-
ically adjusted accordingly.
➃Push [DISPLAY] to return to the main menu.
■ Tone squelch operation
■ Tone scan operation
Q7
TONE SQL
Set the tone frequency
(quick set mode).
See p. 49 for setting de-
tails and available fre-
quencies.
During tone squelch op-
eration.
PO
S1
5
53792040
10
60dB
FM TSQL
Q8
T-SQL
SCN
During repeater operation.
PO
S1
5
53792040
10
60dB
FM T
Q8
RPTR-T
SCN
FM TSQL
SPL
CH
VFO A
S1
5379204060dB
M4 VOX DUP TON
PO 5
10