I Squelch Attenuator - Icom IC-2720H Instruction Manual

3
BASIC OPERATION

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.
The squelch attenuator allows you to set a minimum signal
level needed to open the squelch. The attenuator function can
be deactivated in initial set mode.
➥ 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.
Squelch
threshold
Squelch is
open.
Shallow
NOTE: The squelch attenuator functions even when the
monitor function is in use. Thus set the [SQL] control within
10 to 12 o'clock position is recommended when using the
monitor function.
17
Noise squelch
Squelch
attenuator
Deep
D Squelch attenuator setting
q Turn the transceiver power OFF.
wWhile pushing [SET•
], turn the power ON to enter initial
set mode.
While pushing [SET• ]
push [PWR] to enter initial
set mode
ePush [SET•
] or [LOW•PRIO] to select "Att-On" (squelch
attenuator) item.
r Rotate the left band's [DIAL] to toggle the function ON and
OFF.
• Select "OF" to deactivate the squelch attenuator function.
MAIN
T X
M
t Push [PWR] to exit initial set mode.
INITIAL SET MODE
USING
MAIN
T X
M