Icom IC-R3 instruction manual Subaudible Tone Operation, Tone squelch operation

8 SUBAUDIBLE TONE OPERATION

■Tone squelch operation

◊Operation

The tone squelch opens only when receiving a signal con- taining a matching subaudible tone. You can silently wait for calls from group members using the same tone in an ama- teur band.

qSet the operating frequency in FM mode. w Set the desired subaudible tone in set mode.

•See the following section for programming.

ePush [FUNC] + [(MODE) SET] momentarily to enter set mode.

• Select a non-band scope screen in advance for color LCD.

rRotate [DIAL] until “Tone Squelch” or “tSqL” appears.

•“tSqL” disappears after 1 sec. and “to” appears when color LCD is OFF.

Tone Squelch:			OFF	Tone Squelch:			OFF	Tone Squelch:			TSQL
Tone	Freq.	:	88.5	Tone	Freq.	:	88.5	Tone	Freq.	:	88.5
Duplex		:	OFF	Duplex		:	OFF	Duplex		:	OFF
Offset Freq.:			0.600	Offset Freq.:			0.600	Offset Freq.:			0.600
Scan	Resume :		2SEC	Scan	Resume :		2SEC	Scan	Resume :		2SEC

Tone function set	Tone squelch OFF	Tone squelch ON
mode

tPush [↔] or rotate the tuning dial while pushing [FUNC] to

select “TSQL” (tone squelch).

yPush [(MODE) SET] to exit set mode and start the tone squelch.

uWhen the received signal includes a matching tone, the squelch opens and the signal can be heard.

•When the received signal’s tone does not match, tone squelch does not open, however, the S-indicator shows signal strength.

•To open the squelch manually, push and hold [SQL]. (default)

iTo cancel the tone squelch, repeat steps e–yas de- scribed above and select “OFF” in step t.

◊Setting subaudible tones for tone squelch

operation

qSelect VFO mode or desired memory channel to be pro- grammed.

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