Yaesu FT DX 9000 CONTEST - 2, Руководство по эксплуатации

Страница: 151 / 168

Page 149 FT
DX
9000 C
ONTEST
O
PERATION
M
ANUAL
D
UAL
R
ECEIVE
U
NIT
(
RXU-9000
)
IF N
OTCH
F
ILTER
O
PERATION
-- SSB/CW/RTTY/PKT/AM M
ODES
--
If the optional Dual Receive Unit ( RXU-9000 ) is installed, IF Notch 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 59 for details.
VFO-A Band IF Notch Operation
1. Press the VFO-A NOTCH switch (# ). The LED
imbedded in the switch will glow Red to confirm that
the IF Notch filter has been engaged.
2. Rotate the VFO-A NOTCH knob (# ) to null out
the interfering carrier.
To switch the IF Notch filter off, press the VFO-A
NOTCH switch (# ) once more. The LED imbedded
in the switch will turn off, confirming that the IF Notch
filter is no longer operating.
Sub (VFO-B) Band IF Notch Operation
1. Pressing the SUB RX switch (# ) will engage
Dual Receive operation.
When the imbedded LED glows green, this is your
confirmation that Dual Receive is in operation.
2. Press the VFO-B NTCH switch (# ). The LED
imbedded in the switch will glow Umber to confirm
that the IF Notch filter has been engaged.
3. Rotate the VFO-B NTCH knob (# ) to null out
the interfering carrier.
To switch the IF Notch filter off, press the VFO-B NTCH
switch (#
) once more. The LED imbedded in the switch
will turn off, confirming that the IF Notch filter is no longer
operating.
Note
When the NTCH switch is pressed and held in for two
seconds, the center of the notch action will be reset to the
positions described below (mode-sensitive):
SSB/AM: The Notch will center at 1.5 kHz (center of
the receiver passband).
CW: The Notch will center on the frequency
programmed by the PITCH knob (#
).
NOTCH Switch
NOTCH Knob
NTCH Switch
NTCH Knob
VFO-A VFO-B