Yaesu FTDX-9000MP, Руководство по эксплуатации

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Page 78 FT
DX
9000MP O
PERATION
M
ANUAL
D
IGITAL
N
OTCH
F
ILTER
(
DNF
)
O
PERATION
The Digital Notch Filter (DNF) is an effective beat-cancelling filter that can null out a number of interfering beat notes
inside the receiver passband. Because this is an Auto-Notch feature, there is no adjustment knob associated with this filter.
A A A A A
D D
D D
DVICE VICE
VICE VICE
VICE
If a very strong interfering carrier is encountered, we recommend you first use the IF Notch filter, as it is the most
effective notching tool in the receiver section.
M
AIN
B
AND
(VFO-A) DNF O
PERATION
Press the Main (VFO-A) band’s [ D.NOTCH ] switch to en-
gage the Digital Notch filter. The LED imbedded in the
switch will glow Red, to confirm that the DNF circuit is
engaged.
To cancel DNF operation, press the Main (VFO-A) band’s
[
D.NOTCH ] switch once more. The imbedded LED will
go out, confirming that the Digital Notch Filter is no longer
in operation.
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
)))))
SUB (VFO-B)
[DNR] Switch
MAIN (VFO-A)
[D.NOTCH] Switch
VDD TEMP SWR BIAS
S
UB
B
AND
(VFO-B) DNF O
PERATION
1. Press the Sub (VFO-B) band’s [ RX ] switch to engage
Dual Receive operation.
2. Press the Sub (VFO-B) band’s [ DNF ] switch to en-
gage the Digital Notch filter. The LED imbedded in
the switch will glow Umber, to confirm that the DNF
circuit is engaged.
To cancel DNF operation, press the Sub (VFO-B) band’s
[
DNF ] switch once more. The imbedded LED will go out,
confirming that the Digital Notch Filter is no longer in
operation.