If Shift Operation - Yaesu FTDX5000 Series Operating Manual

I
NTERFERENCE
IF SHIFT O
The IF Shift allows you to vary the DSP filter passband higher or lower, (without changing the pitch of the incoming signal)
to reduce or eliminate interference. Because the carrier tuning frequency is not varied, there is no need to re-tune the
operating frequency when using the IF Shift to eliminating the interference. The total passband tuning range for the IF Shift
system is ±1 kHz.
VFO-A IF SHIFT Operation
 Press the ( VFO-A )[ SHIFT ] button. The ( VFO-
A )[ SHIFT ] button glows red, and the center position
of the IF passband will be indicated in the SUB
DISPLAY-II window. The ( VFO-A )[ SELECT ] knob
will now function as the IF SHIFT knob.
 Rotate the ( VFO-A )[ SELECT ] knob to the left or right
to reduce the interference.
 Press the ( VFO-A )[ RESET ] button briefly to quickly
move the filter passband to center.
 To turn the IF SHIFT operation "off", press the ( VFO-
A )[ SHIFT ] button again. The red LED of the ( VFO-
A )[ SHIFT ] button turns off, and the filter passband
will move to the center. However, the last setting of
the IF SHIFT control will be retained until you change
it again.
Refer to Figure "A" and notice the depiction of the IF
DSP filter as a thick line in the center of the passband,
no shift (the [ SHIFT ] button glows red). In Figure "B",
an interfering signal has appeared inside the original
passband. In Figure "C", you can see the effect of ro-
tating the [ SELECT ]( shift ) knob and moving the fil-
ter so that the interference is outside of the passband.
A :
DVICE
You may select the display pattern shown in the SUB DIS-
PLAY window from three patterns via Menu item "019
DISP SELECT". See page 122 for details.
Page 60
R
EJECTION ( S
PERATION ( SSB/CW/RTTY/PKT M
( VFO-A )[ SHIFT ] Button
[ RESET ] Button
( VFO-A )[ SELECT ] Knob
)
3
IGNALS WITHIN KHZ
VFO-B IF SHIFT Operation
 Press the ( VFO-B )[ SHIFT ] button. The ( VFO-
B )[ SHIFT ] button glows red, and the center position
of the IF passband will be indicated in the SUB
DISPLAY-III window. The ( VFO-B )[ SELECT ]
knob will now function as the IF SHIFT knob.
 Rotate the ( VFO-B )[ SELECT ] knob to the left or
right to reduce the interference.
 Press the ( VFO-B )[ RESET ] button briefly to quickly
move the filter passband to center.
 To turn the IF SHIFT operation "off", press the ( VFO-
B )[ SHIFT ] button again. The red LED of the ( VFO-
B )[ SHIFT ] button turns off, and the filter passband
will move to the center. However, the last setting of
the IF SHIFT control will be retained until you change
it again.
A
Desired Signal
QRM
IF
BANDWIDTH BANDWIDTH
FT 5000 O
DX
)
ODES
( VFO-B )[ SHIFT ] Button
[ RESET ] Button
( VFO-B )[ SELECT ] Knob
B C
Desired Signal Desired Signal
QRM
IF IF
BANDWIDTH
M
PERATING ANUAL