Yaesu FTDX-9000MP, Operation Manual

Page: 81 / 180

Page 79 FT
DX
9000MP O
PERATION
M
ANUAL
IF N
OISE
B
LANKER
(
NB
)
O
PERATION
The FT
DX
9000MP includes an effective IF Noise Blanker, which can significantly reduce noise caused by automotive
ignition systems.
M
AIN
B
AND
(VFO-A) NB O
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.
SUB(VFO-B) [NB] Switch
MAIN(VFO-A) [NB] Switch
SUB(VFO-B) [NB] Knob
MAIN(VFO-A) [NB] Knob
IIIII
NTERFERENCE NTERFERENCE
NTERFERENCE NTERFERENCE
NTERFERENCE
R R R R R
EJECTION EJECTION
EJECTION EJECTION
EJECTION
(S(S(S(S(S
IGN IGN
IGN IGN
IGNALS ALS
ALS ALS
ALS WITHIN WITHIN
WITHIN WITHIN
WITHIN
3 3
3 3 3
KHZ KHZ
KHZ KHZ
KHZ
)))))
VDD TEMP SWR BIAS
S
UB
B
AND
(VFO-B) NB O
PERATION
1. Pressing the Sub (VFO-B) band’s [ RX
] switch will
engage Dual Receive operation.
When the imbedded LED grows 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 Yel-
low 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.
A A
A A
A
D D D D DVICE VICE VICE VICE VICE
When the Roofing filter mode is set to “AUTO”
and the Noise Blanker is turned On, the Roofing
Filter bandwidth will automatically be set to 15 kHz.