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Icom IC-7851 - Page 22

Icom IC-7851
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1-6
1
PANEL DESCRIPTION
#1 SQUELCH CONTROL [SQL] (p. 4-4)
Rotate to adjust the squelch threshold level. The
squelch removes noise output from the speaker
(closed condition) when no signal is received.
The squelch is particularly effective for FM. It is also
available for other modes.
11 to 12 o’clock position is recommended for any setting
of the [SQL] control.
S-meter
squelch
Noise squelch
Squelch
is open.
Squelch
threshold
#2 NOISE BLANKER KEY [NB] (p. 7-11)
Push to turn the noise blanker ON or OFF.
The noise blanker reduces pulse-type noise such
as that generated by automobile ignition systems.
This function cannot be used in the FM mode, or
for non-pulse-type noise.
The [NB] indicator above this key lights white while
the function is activated.
Hold down for 1 second to enter the Noise blank-
er set mode.
#3
NOISE REDUCTION KEY [NR]
(p. 7-12)
Push to turn the DSP noise reduction ON or OFF.
The [NR] indicator above this key lights white when the
function is activated.
#4 NOISE REDUCTION LEVEL CONTROL [NR]
(p. 7-12)

Adjusts the DSP noise reduction level when the noise
reduction is in use. Set for maximum readability.
To use this control, push the appropriate Main or Sub
band’s [NR].
#5 NOISE BLANKER CONTROL [NB] (p. 7-11)
Adjust the noise blanker threshold level.
To use this control, push appropriate band’s [NB] key.
#6 LOCK INDICATOR [LOCK] (p. 4-12)
Lights when the dial lock function is activated.
#7 FUNCTION DISPLAY (p. 1-14)
Shows the operating frequency, function key menus,
Spectrum scope screen, Memory channel screen,
Set mode settings, and so on.
Front panel (Continued)
$8 $6 $3$9%0
#6 #7
$7
#8 $1#9 $0 $2
$5 $4
#5
#3
#4
#2
#1

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