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Page 31FT DX 9000D OPERATION MANUAL
DNR Switch
(Refer to Main (VFO-A): )
This button turns the sub band (VFO-B) Digital Noise
Reduction circuit on and off. When the Digital Noise
Reduction is activated, the LED inside the button will
glow umber. Adjustment of the Noise Reduction level
is provided by the DNR knob, described in the next
section.
DNF Switch (Refer to Main (VFO-A): )
This switch is the On/Off switch for the Sub (VFO-B)
band receivers Digital Notch Filter. When turned On,
the associated LED glows Orange.
AF GAIN RF GAIN
(Refer to Main (VFO-A): )
AF GAIN Knob
This is the Sub (VFO-B) band receivers Volume (AF
GAIN) control.
RF GAIN Knob
This is the Sub (VFO-B) band receivers RF GAIN
control, which adjusts the gain of the receivers RF
and IF amplifier stages. This control is normally left
in the fully clockwise position.
AFL Switch
Pressing this button activates the Audio (AF) Limiter
circuit of the Sub (VFO-B) band receiver. This will
protect the audio amplifier from distortion, and pro-
tect your ears from high audio levels, caused by sud-
den peaks in audio input when the AGC is set to “OFF.”
When the Audio Limiter circuit is activated, the LED
inside the button will glow orange.
NB SQL Knobs
(Refer to Main (VFO-A): )
NB Knob
This adjusts the Sub (VFO-B) band receivers IF Noise
Blanker level, when the Noise Blanker is engaged via
the NB switch, described below.
SQL Knob
This knob provides adjustment of the Sub (VFO-B)
band receivers noise Squelch system.
NB Switch (except on FM mode)
(Refer to Main (VFO-A): )
This switch engages the Sub (VFO-B) band IF Noise
Blanker. Adjustment of the Noise Blanker level is pro-
vided by the NB knob, described in the previous
section.
SHIFT WIDTH Knobs
(except on FM mode)
(Refer to Main (VFO-A): )
SHIFT Knob
This knob adjusts the center frequency of the Sub
(VFO-B) band receivers DSP filter, with an adjust-
ment range of ± 1 kHz.
WIDTH Knob
This knob varies the width of the IF DSP filter for the
Sub (VFO-B) band receiver.
CONT Switch
(Refer to Main (VFO-A): )
This is the On/Off switch for the Sub (VFO-B) band
receivers CONTOUR filter. When engaged, the
CONT LED will glow Orange. Adjustment of the
Sub (VFO-B) band CONTOUR filters frequency is
provided by the CONT knob (described in the next
section).
CONT DNR
(Refer to Main VFO-A): )
CONT (Contour)
This knob provides adjustment of the Sub (VFO-B)
band receivers CONTOUR filter frequency.
Advice
Use the Menu items “RX DSP 080 SUB-CONTOUR-
LEVEL” and “RX DSP 081 SUB-CONTOUR-
WIDTH” to configure the Sub (VFO-B) band
receivers CONTOUR filter.
DNR Knob
This knob is used to select one of the 16 available
noise reduction parameters for the Sub (VFO-B) band
receivers’s Digital Noise Reduction system.
FRONT PANEL CONTROLS
33


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