If Noise Blanker (Nb) Operation - Yaesu FT DX 9000 CONTEST Operation Manual

If the optional Dual Receive Unit (RXU-9000) is installed, IF Noise Blanker operation is available on both the VFO-A and
VFO-B. Operation is identical on either VFO.
As a reminder, there is no difference in the fundamental performance of the two VFOs. Please see page 68 for details.
( VFO-B ) [ NB ] Knob
VFO-A B NB O
AND PERATION
1. Press the VFO-A [ NB ] switch momentarily to reduce
a short pulse noise such as from switching transients,
automobile ignitions and power lines. The LED im-
bedded in the switch will glow Red to confirm that the
Narrow-NB is operating.
Press and hold the VFO-A [ NB ] switch for two sec-
onds to reduce a longer duration man-made pulse noise.
The LED imbedded in the switch will glow Yellow to
confirm that the Wide-NB is operating.
2. Advance the VFO-A [ NB ] control to the point where
the offending ignition noise is best reduced or elimi-
nated.
To end Noise Blanker operation, press the VFO-A [ NB ]
switch once more. The LED imbedded in the switch will
turn off, confirming that the Noise Blanker is no longer in
operation.
FT 9000 C O
DX ONTEST
IF N B
OISE LANKER
( VFO-A ) [ NB ] Knob
( VFO-A ) [ NB ] Swicth
( VFO-B ) [ NB ] Swicth
M
PERATION ANUAL
D D D D D R R R R R U U U U U
U U U U U AL AL AL AL AL ECEIVE ECEIVE ECEIVE
ECEIVE ECEIVE
( NB ) O
PERATION
VFO-B B NB O
AND PERATION
1. Pressing the [ SUB RX ] switch will engage Dual Re-
ceive operation.
When the imbedded LED glows green, this is your
confirmation that Dual Receive is in operation.
2. Press the VFO-B [ NB ] switch momentarily to reduce
a short pulse noise such as from switching transients,
automobile ignitions and power lines. The LED im-
bedded in the switch will glow Umber to confirm that
the Narrow-NB is operating.
Press and hold the VFO-B [ NB ] switch for two sec-
onds to reduce a longer duration man-made pulse noise.
The LED imbedded in the switch will glow Yellow to
confirm that the Wide-NB is operating.
3. Advance the VFO-B [ NB ] control to the point where
the offending ignition noise is best reduced or elimi-
nated.
To end Noise Blanker operation, press the VFO-B [ NB ]
switch once more. The LED imbedded in the switch will
turn off, confirming that the Noise Blanker is no longer in
operation.
( RXU-9000 RXU-9000 )
RXU-9000 RXU-9000
RXU-9000
NIT NIT NIT NIT NIT
VDD BIAS TEMP SWR
[ SUB RX ] Switch
Page 169