Icom IC-2820H Instruction Manual - Page 43

Squelch attenuator

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BASIC OPERATION 3 ■ Squelch attenuator The transceiver has an RF attenuator related to the squelch level setting. Approx. 10 dB attenuation is obtained at maximum setting. The squelch attenuator allows you to set the minimum signal level needed to open the squelch. The attenuator function can be deactivated in set mode. ➥ Rotate [SQL] clockwise past the 13 o'clock position to activate the squelch attenuator. • Attenuation level can be adjusted up to 10 dB (approx.) between 13 o'clock and fully clockwise position. Noise squelch Squelch threshold Squelch is open. Squelch attenuator Shallow Deep NOTE: The squelch attenuator functions even when the monitor function is in use. Thus it is recommended to set the [SQL] control between the 10 and 13 o'clock positions when using the monitor function. 1 D Squelch attenuator setting 2 q Push [F• ] to display the function guide. w Push [MENU](V/MHz•SCAN) (Right band's) to enter MENU 3 screen. 4 5 [F• ] 6 [MENU] 7 eRotate [DIAL] to select "SET MODE," then push 8 [MAIN•BAND] to enter set mode. rRotate [DIAL] to select "AUTO ATT" then push 9 [MAIN•BAND]. tRotate [DIAL] to turn the squelch attenuator function ON 10 and OFF, then push [MAIN•BAND] 11 • Select "OFF" to deactivate the squelch attenuator function. 12 13 14 15 y Push [BACK](V/MHz•SCAN) (Right band's) twice to return to 16 frequency indication. 17 18 19 22

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22
3
BASIC OPERATION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
■
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 the minimum signal
level needed to open the squelch. The attenuator function can
be deactivated in set mode.
➥
Rotate
[SQL]
clockwise past the 13 o’clock position to ac-
tivate the squelch attenuator.
• Attenuation level can be adjusted up to 10 dB (approx.) between
13 o’clock and fully clockwise position.
NOTE:
The squelch attenuator functions even when the
monitor function is in use. Thus it is recommended to set
the
[SQL]
control between the 10 and 13 o'clock positions
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
[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 band’s)
twice to return to
frequency indication.
[
F
•
]
[MENU]
Squelch is
open.
Squelch
attenuator
Squelch
threshold
Shallow
Deep
Noise squelch