14
3
BASIC OPERATION
3
■
Audio mute function
This function temporarily mutes the audio without disturbing
the volume setting.
➥
Push
[FUNC]
then
[
SQL
Y
Y
D(MUTE)]
to mute
audio signals.
• “MUTE” appears.
• Push
[
CLR
A(MW)]
(or any other key) to cancel the
function.
■
Squelch attenuator
The transceiver has an RF attenuator related to the squelch
level setting. Approx. 10 dB attenuation is obtained at maxi-
mum setting.
➥
Rotate
[SQL]
clockwise past the 12 o’clock position to ac-
tivate the squelch attenuator.
• Attenuation level can be adjusted up to 10 dB (approx.) between
12 o’clock and fully clockwise position.
• When setting the squelch from the microphone, a level greater
than ‘19’ activates the squelch attenuator.
NOTE:
The squelch attenuator functions even when the
monitor function is in use. Thus set the [SQL] within 10 to
12 o’clock position (12 to 19 level when setting with the
HM-133V) is recommended when using the monitor func-
tion.
Squelch is
open.
Squelch
attenuator
Squelch
threshold
Shallow
Deep
Noise squelch
LOCK
SET
ANM
MONI
DUP
LOW
T-SCAN
TONE
PRIO
M/CALL
SCAN
V/ MHz
DIGITAL PRIO AO
BUSY
MUTE
NAR
MID
LOW
Appears
MUTE
Содержание IC-2200H
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