User Guide

50
5
FUNCTIONS FOR RECEIVE
2001 NEW
[NB]
NB Level
5O%
Shows noise blanker level
“NB” appears while noise blanker is activated.
■ IF (DSP) filter shape
The type of IF (DSP) filter shape for SSB and CW can
be selected independently from soft and sharp.
q Push [SSB] or [CW/RTTY] to select SSB, CW or
RTTY mode.
w Select the filter set mode.
• Push [FILTER] for 1 sec.
• Operating mode can be selected in this step.
e Push [FILTER] several times to select the desired
IF filter.
r Push the [F5] to select the filter shape from “ SOFT ”
and “ SHARP .”
t Push [MENU] to exit the set mode.
■ Noise blanker
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 ON.
• [NB] indicator appears.
w Push [NB] for 1 sec. to enter the NB level set mode.
e Rotate the tuning dial to adjust the noise blanker
level.
•Noise blanker level is indicated with bar meter and digit
in ‘%.’
r Push [NB] to exit the noise blanker set mode.
t Push [NB] to turn the noise blanker OFF.
• [NB] indicator disappears.
When using the noise blanker, received signals may
be distorted if the noise blanker level setting has
been too high.
■ Meter peak hold function
The S-meter has a peak level holding function. The
peak level of the received signal strength is indicated
for 0.5 sec. (approx.). This function can be deactivated
in set mode if desired. (p. 81)
BW
BW
Push [F5]
Meter Peak Hold
9
ON
Shows peak level for approx. 0.5 sec.
IC-7400.qxd 02.4.2 11:35 Page 50