Monitor; Lock; Adjusting The Squelch Level - Icom IC-440N Instruction Manual

3
BASIC OPERATION
■

Monitor

This function is used to listen to weak signals or to open the
tone squelch manually.
➥ Push
(Monitor) to toggle the monitor function ON and
MONI
T SQL
OFF.
• " " blinks when the monitor function is in use.
Blinks
■

Lock

This function electronically locks all keys except for [PTT],
F
(Monitor), (Function),
SET
and LOW (Lock) to prevent accidental channel changes and
function access.
➥ Hold down
LOW
tion ON or OFF.
• " " appears when the lock function is in use.
18
Blinks
SCAN
(Call), (Loud),
TAG
(Lock) for 2 seconds to set the lock func-
Appears

■ Adjusting the squelch level

Adjust the noise squelch level between 0 and 9. The lower
the value, the lower the signal level required to open the
squelch. The higher the setting, the stronger the signal re-
quired to open the squelch.
q
Hold down
level setting mode.
➥
Pushing
way to enter the squelch level setting mode.
MONI
T SQL w
Push or
(Small)
ranges.
e
Push CH (SQL) to exit the squelch level setting mode.
SQL
CH
(SQL) for 2 seconds to enter the squelch
SQL
F
CH
, then holding down
SQL
SET
to adjust the squelch level within 0 to 9
The squelch level
is displayed.
(SQL) is another