ICOM ic-r2 User Manual

10

4

BASIC OPERATION

■

The audio level can be adjusted through 32 levels.

➥

Push [VOL

] or [VOL

Z

] to set the desired audio level.

• Beep tone sounds while setting. This indicates the approximate

sound level.

• Pushing and holding these keys change the audio level continu-

ously.

• The frequency display shows the volume level while setting.

■

The squelch circuit mutes the received audio signal depend-
ing on the signal strength. The receiver has 9 squelch levels,
a continuously open setting and an automatic squelch setting.

➥

While pushing [SQL], rotate the
[DIAL] to select the squelch level.

• The first click of [DIAL] indicates the

current squelch level.

• “LEVEL1” is loose squelch and

“LEVEL9” is tight squelch.

• “AUTO” indicates automatic level ad-

justment with a noise pulse count
system.

• “OPEN” indicates continuously open

setting.

■

This function is used to listen to weak signals or to open the
tone squelch manually.

➥

Push and hold [SQL] to monitor the operating frequency.

The [SQL] switch can be set to ‘sticky’ operation in ex-

panded set mode. (p. 27)

Min. setting (no audio)

:

Initial setting

:

:

:

Max. setting

Automatic squelch

Maximum level