If Shift Operation (Ssb/Cw/Rtty/Pkt/Am Modes) - Yaesu FTDX-9000D Operation Manual

I
IF SHIFT O
IF Shift allows you to vary the DSP filter passband higher or lower, without changing the pitch of the incoming signal, so as
to reduce or eliminate interference. Because the carrier tuning frequency is not varied, there is no need to re-tune the
operating frequency when eliminating the interference. The total passband tuning range for the IF Shift system is ± 1 kHz.
Main (VFO-A) Band IF Shift Operation
Rotate the Main (VFO-A) band's SHIFT (#
to the left or right to reduce the interference.
Sub (VFO-B) Band IF Shift Operation
1. Press the Sub (VFO-B) band's RX switch (#
engage Dual Receive operation.
2. Rotate the Sub (VFO-B) band's SHIFT (#
trol to the left or right to reduce the interference.
Advice
The position of the IF Shift system may be observed on
the TFT.
Referring to Figure (A), note the depiction of the
IF DSP filter as the thick line, with the SHIFT
control in the 12 o'clock position. In Figure (B),
an interfering signal has appeared inside the origi-
nal passband. In Figure (C), you can see the effect
of rotating the SHIFT control so as to reduce
the interference level by moving the filter pass-
band so that the interference is outside of the pass-
band.
FT 9000D O
R
SSB/CW/RTTY/PKT/AM M
) control
) to
) con-
A
IF BANDWIDTH
M
(S
SUB(VFO-B)
SHIFT knob
MAIN (VFO-A)
Desired Signal Desired Signal
B
QRM
IF BANDWIDTH
3 )
IF Shift system may be
observed on the
MAIN(VFO-A)
SHIFT knob
SUB(VFO-B)
RX switch
SUB (VFO-B)
MAIN(VFO-A)
IF Shift system may be
observed on the TFT
SUB(VFO-B)
IF Shift system may be
observed on the TFT
C
QRM
IF BANDWIDTH
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