Roofing/R.flt (Roofing Filters) - Yaesu FT DX 9000 CONTEST Operation Manual

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
If the optional Dual Receive Unit (RXU-9000) is installed, three Roofing Filters are available for selection in each VFO
(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.
[ R.FIL ] Swicth
VFO-A R F
OOFING ILTER
Press the VFO-A [ ROOFING ] switch to toggle the Roof-
ing Filter selection.
AUTO 15 kHz
A
DVICE
As you repeatedly press this switch, you will
observe different LEDs lighting up in the Roof-
ing Filter area of the front panel, denoting the
Roofing Filter currently in use. Also, the se-
lected Roofing Filter bandwidth will be indi-
cated on the LCD.
Typically, this selection will be set to "AUTO."
The Roofing Filter selection will be memorized
independently on each VFO in the VFO stack.
Roofing Filter bandwidth
will be indicated
Page 162
( RXU-9000 RXU-9000 )
RXU-9000 RXU-9000
RXU-9000
NIT NIT NIT NIT NIT
ROOFING/R.FLT ( R
[ ROOFING ] Swicth
O
PERATION
6 kHz 3 kHz AUTO
)
F
OOFING ILTERS
LCD Display
VDD
VFO-B R F
OOFING ILTER
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 [ R.FIL ] switch to toggle the Roof-
ing Filter selection.
AUTO 15 kHz 6 kHz
A
DVICE
As you repeatedly press the [ R.FIL ] switch, the
selected bandwidth will appear on the LCD.
Typically, this selection will be set to "AUTO."
When "AUTO" is selected, the LED imbed-
ded in the switch will go out (there always is a
roofing filter in the receiver path).
The Roofing Filter selection will be memorized
independently on each VFO in the VFO stack.
Q
UICK
The "AUTO" selection of the Roofing Filter is
based on the operating mode. However, you
may override the automatic selection, if band
conditions warrant a different (usually, a
tighter) selection.
The AUTO mode Roofing Filter selections are
shown below:
AM/FM/FM-PKT
LSB/USB/PKT
CW/RTTY
FT 9000 C
DX ONTEST
BIAS TEMP SWR
[ SUB RX ] Switch
O
PERATION
3 kHz AUTO
P
OINT
15 kHz
6 kHz
3 kHz
O M
PERATION ANUAL