Receiver Accessories
DSP NOISE REDUCTION
(NR)
The
NOISE REDUCTION feature
of
the DSP system may be used to enhance signal-to-noise
ratio
on
weak signals.
I.
Press
the [DSP] key, which selects Operating Function Row 9 [DNR, DNF, DBP]
on
the
display.
2.
Press the [A](DNR) key to activate the DSP
NOISE
REDUCTION feature.
3.
Now
press and hold in the [A](DNR) key for
~
second. This instantly activates
MENU
#17
(DSP
NR), which allows adjustment
of
the DSP
NOISE
REDUCTION level.
4.
Rotate the
MAIN
DIAL to find the point where best signal-to-noise ratio
is
obtained
under the current noise conditions.
5.
Press the [FUNC] key momentarily to save the new setting and exit to normal opera-
tion.
6.
To
tum off the
DSP
NOISE
REDUCTION feature, press the [A](DNR) key again.
ft
"'"
/fnoise
is present at a level which causes indication on the S-meter, the per-
,
it!l
formance
of
the Noise Reductionfilter may be enhanced by rotating the SQLI
...
/ .
RF
(RF
GAIN)
control in a counter-clockwise direction so
as
to set the
(rlXed)
S-meter reading at the
same
level
as
the noise peaks. This adjustment raises the
AGC
threshold
of
the receiver.
DSP NOTCH FILTER
The
DSP
system's Notch Filter may be helpful
in
removing one or more offending carrier
or
heterodyne signals from the audio passband.
I.
Press
the [DSP] key, which selects Operating Function Row 9 [DNR, DNF, DBP] on
the
display.
I
2.
Press
the [B](DNF) key to activate the Notch Filter. You will notice that the audio level
ofthe carrier signal is being reduced.
3.
Press
the [B](DNF) key once more to tum the Notch Filter off.
~
".
Do
not
activate this filter in the
CW
mode, as incoming
CW
signals will be
,. "
it!l
...
notclzed out
of
the audio passband!
/
FT-JOO
MICRO
MOBILE
OPERATING
MANUAL
45
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