ICOM 297000 Manuale Utente
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3
BASIC OPERATION
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■ 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 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 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.
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 Push [F•
] to display the function guide.
w Push [MENU](V/MHz•SCAN)
(Right band’s)
to enter MENU
screen.
e Rotate the main band’s [DIAL] to select “SET MODE,”
then push [MAIN•BAND] to enter set mode.
r Rotate [DIAL] to select “AUTO ATT” then push
[MAIN•BAND].
t Rotate [DIAL] to turn the squelch attenuator function ON
and OFF, then push [MAIN•BAND]
• Select “OFF” to deactivate the squelch attenuator function.
y Push [BACK](V/MHz•SCAN)
(Right bnd’s)
2 times to exit set
mode.
[F• ]
[MENU]
Squelch is
open.
Squelch
attenuator
attenuator
Squelch
threshold
threshold
Shallow
Deep
Noise squelch