I Audio Mute Function; I Squelch Attenuator - Icom IC-2200H Instruction Manual

I Audio mute function

This function temporarily mutes the audio without disturbing
the volume setting.
➥ Push [FUNC] then [
MUTE
audio signals.
• "MUTE" appears.
• Push [ A(MW)] (or any other key) to cancel the
CLR
function.
Appears
MUTE
NAR
MID
LOW
LOCK ANM
S ET MONI
D(MUTE)] to mute
Y Y
SQL
DIGITAL PRIO AO BUSY
DUP T-SCAN PRIO SCAN
LOW TONE M/CALL V/ MHz

I 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.
Noise squelch
Squelch
threshold
Squelch is
open.
Shallow
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.
BASIC OPERATION
Squelch
attenuator
Deep
3
3
14