Noise Blanker; D Nb Set Mode - Icom IC-7800 Instruction Manual

■ 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 within 1 to 10.
Set the noise pulse width within 1 to 100.
FUNCTIONS FOR RECEIVE
The noise blanker eliminates pulse-type noise such as
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 different. Turn the noise blanker OFF,
or rotate [NB] control to a shallow position in such
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 filter shape set mode.
5-17
5