I Tone Scan; I Pocket Beep Operation - Icom IC-T81A Instruction Manual

9
SUBAUDIBLE TONE OPERATION

I Tone scan

The transceiver can detect the subaudible tone frequency in a
received signal. By monitoring a signal, such as that being
transmitted on a repeater input frequency, you can determine
the tone frequency required to access the repeater.
➀
Set the desired frequency or memory channel to be
checked for a tone frequency.
➁
Push [ TSCAN)] for 1 sec. to start the tone scan.
(RIT)
• Rotate [DIAL] to change the scan direction.
➂
When the tone frequency is decoded, the set mode con-
tents are programmed with the tone frequency.
• "TSQL" flashes: the matched tone is stored as a CTCSS tone;
"T" flashes: the matched tone is stored as a repeater tone.
• When in memory mode, the decoded tone frequency is stored
temporarily—changing memory channels or selecting VFO mode
erases the matched tone.
• "CT" appears during tone scan when the tone squelch is acti-
vated; "rT" appears when the tone squelch is not activated.
• Subaudible tone frequencies flash as they are scanned.
T SQL
"CT" appears during
tone scan with tone squelch
➃
Push [TSCAN)] (or [PTT] or [VFO]) to stop the scan.
26
T
"rT" appears during
tone scan without tone squelch

I Pocket beep operation

This function uses subaudible tones for calling and can be
used as a "common pager" to inform you that someone has
called you while you were away from the transceiver.
D Waiting for a call from a specific station
➀
Set the operating frequency.
➁
Set the desired subaudible tone (same as that used for
tone squelch operation, "CT") in set mode.
• See previous page for programming.
➂
Push [MULTI] to enter subaudible tone mode.
• "T" appears; if "D" appears, push [MULTI(↕)] to select "T."
➃
Push [MULTI(↔)] (or rotate [DIAL]) one or more times until
"TSQLS" appears; then push [VFO] to exit set mode.
➄
When a signal with a matched tone is received, the trans-
ceiver emits beep tones for 30 sec. and flashes "S."
➅
Push [PTT] to answer or push [VFO] to stop the beeps and
flashing.
• Tone squelch is automatically selected.
D Calling a waiting station using pocket beep
A subaudible tone matched with the station's tone frequency
is necessary. Use the tone squelch on the previous page or
subaudible tone encoder (p. 15).