ICOM 269900 사용자 설명서
18
4
BASIC OPERATION
4
■ 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.
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
• “AUTO” indicates automatic level adjustment with a noise pulse
count system.
• “OPEN” indicates continuously open setting.
■ Monitor function
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.
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.
The [SQL] key can be set to ‘sticky’ operation in expanded
set mode. See page 54 for details.
set mode. See page 54 for details.
√
MODE
ANL
AFC
TSQL
FM
146 010
PSKIP
-DUP
The 1st segment blinks
SQL
SQUELCH:AUTO
√
MODE
ANL
AFC
TSQL
FM
146 010
PSKIP
-DUP
SQUELCH:LEVEL9
√
MODE
ANL
AFC
TSQL
FM
146 010
PSKIP
-DUP
Automatic squelch
Maximum level
[R-DIAL]
SQL