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50
5
FUNCTIONS FOR RECEIVE
2001 NEW
[NB]
NB
Level
5O%
Shows noise blanker level
NB appears while noise blanker is activated.
IF (DSP) lter shape
The type of IF (DSP) lter 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 lter 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 lter.
r Push the [F5] to select the lter 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
63


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