Icom IC-7800 Instruction Manual - Page 99

Noise blanker

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I Noise blanker [NB] for main [NB] for sub [NB] control for main [NB] control for sub D NB set mode Set the noise attenuation level from 1 to 10. Set the noise pulse width from 1 to 100. 5 FUNCTIONS FOR RECEIVE The noise blanker eliminates pulse-type noise such as the noise from car ignitions. The noise blanker is not available for FM mode. q Push [NB] to turn the noise blanker function ON and OFF. • [NB] indicator above their switch lights green. wRotate [NB] control to adjust the noise blanker threshold level. When using the noise blanker, received signals may be distorted if they are excessively strong or the noise type is other than impulse. Turn the noise blanker OFF, or rotate [NB] control to a shallow position in this case. To deal with various type of noises, attenuation level and noise width can be set in NB set mode. q Push [NB] for 1 sec. to enter NB set mode. w Push [F-1•Y] or [F-2•Z] to select the desired item. e Rotate the main dial to set the desired level or value. • Push [F-4•DEF] for 1 sec. to select a default value. r Push [EXIT/SET] to exit NB set mode. 5-17

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5-17
■
Noise blanker
The noise blanker eliminates pulse-type noise such as
the noise from car ignitions. The noise blanker is not
available for FM mode.
q
Push [NB] to turn the noise blanker function ON and
OFF.
• [NB] indicator above their switch lights green.
w
Rotate [NB] control to adjust the noise blanker
threshold level.
When using the noise blanker, received signals may
be distorted if they are excessively strong or the
noise type is other than impulse. Turn the noise
blanker OFF, or rotate [NB] control to a shallow po-
sition in this case.
D
NB set mode
To deal with various type of noises, attenuation level
and noise width can be set in NB set mode.
q
Push [NB] for 1 sec. to enter NB set mode.
w
Push [F-1•
Y
] or [F-2•
Z
] to select the desired item.
e
Rotate the main dial to set the desired level or value.
• Push [F-4•DEF] for 1 sec. to select a default value.
r
Push [EXIT/SET] to exit NB set mode.
[NB] for main
[NB] control
for sub
[NB] control
for main
[NB] for sub
5
FUNCTIONS FOR RECEIVE
Set the noise attenuation level from 1 to 10.
Set the noise pulse width from 1 to 100.