50
5
FUNCTIONS FOR RECEIVE
2001 NEW
[NB]
N B L e v e l
5 O %
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)
B W
B W
Push [F5]
M e t e r P e a k H o l d
9
O N
Shows peak level for approx. 0.5 sec.
IC-7400.qxd 02.4.2 11:35 Page 50