Icom IC-24AT Instruction Manual page 41

38
OPTIONAL UNIT OPERATION 14
3) To turn OFF a subaudible tone, repeat step 1 until "T" or
"T SQL" disappears.
| NOTE: The tone squelch cannot be used through a
| repeater equipped with a tone filter.
—— USING SE T MODE
MSETTING A TONE FREQUENCY
frequency for 83.5 Hz.
1) Push [A] (CLR) to select VFO mode.
2) Push [C] (V/U) to select the desired operating band,
VHF or UHF.
3) While pushing [FUNC], push [8j (SET) to enter SET
mode.
ə Refer to p. 8 for SET mode details.
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The display shows the tone
4) Push [*](v) or [€](^) several times until "TO"
appears as shown above.
5) Rotate the tuning control to set the desired fre-
quency.
6) Push [A] (CLR) or [PTT] to set the value and to exit
SET mode.
14-2 Subaudible tone
encoder
When a repeater requires a subaudible tone, an optional U !-0
or UT-51 unit is necessary. ,
1) While pushing [FUNC], push [1] (T/T SQL).
* "T" appears on the function display.
o When the UT-50 is installed, push the switch until only
"T? appears.
2) io set a subaudible tone frequency, see at right.
3) To turn OFF a subaudible tone, repeat step 1 until "T" or
"T SQL' disappears.
14-3 Tone squelch (CTCSS)
The tone squelch function allows you to receive only signals
with the same subaudible tone as that programmed in your
transceiver.
An optional UT-50 TONE SQUELCH UNIT is necessary for
operation.
1) While pushing [FUNC], push [1] (T/T SQL) until "T SQL"
appears on the function display.
se When only "T" appears, the subaudible tone encoder is
activated.
2) To set a tone frequency, see at right.