I Squelch Level Setting; I Monitor Function - Icom IC-R20 Instruction Manual

Icom america communications receiver instruction manual

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I Squelch level 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 and holding [SQL], rotate [R-DIAL] to se-

lect the squelch level.

• "LEVEL 1" is loose squelch and "LEVEL 9" is tight squelch.

• "AUTO" indicates automatic level adjustment with a noise pulse

count system.

• "OPEN" indicates continuously open setting.

[R-DIAL]

SQL

146 010

√

Automatic squelch

146 010

√

Maximum level

This function is used to listen to weak signals without disturb-

ing the squelch setting or to open the squelch manually even

when mute functions such as the tone squelch are in use.

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

• The 1st segment of the S-meter blinks.

SQL

The [SQL] key can be set to 'sticky' operation in expanded

set mode. See page 54 for details.

BASIC OPERATION

146 010

√

The 1st segment blinks

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