ICOM ic-2720h Instruction Manual
17
3
BASIC OPERATION
New2001
■ 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.
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.
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.
monitor function is in use. Thus set the [SQL] control within
10 to 12 o’clock position is recommended when using the
monitor function.
D Squelch attenuator setting
q Turn the transceiver power OFF.
w While pushing [SET•
w While pushing [SET•
], turn the power ON to enter initial
set mode.
e Push [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.
t Push [PWR] to exit initial set mode.
MAIN
T X
M
MAIN
T X
M
While pushing [SET• ]
push [PWR] to enter initial
set mode
push [PWR] to enter initial
set mode
USING
INITIAL SET MODE
Squelch is
open.
Squelch
attenuator
attenuator
Squelch
threshold
threshold
Shallow
Deep
Noise squelch
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