If Shift Operation (Ssb/Cw/Rtty/Pkt Modes) - Yaesu FT DX 9000 CONTEST Operation Manual

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.
Rotate the [ SHIFT ] control to the left or right to reduce
the interference.
A
DVICE
The position of the IF Shift system may be ob-
served on the LCD.
Referring to Figure (A), note the depic-
tion of the IF DSP filter as the thick line,
with the [ SHIFT ] control in the 12 o'clock
position. In Figure (B), an interfering sig-
nal has appeared inside the original pass-
band. In Figure (C), you can see the ef-
fect of rotating the [ SHIFT ] control so as
to reduce the interference level by mov-
ing the filter passband so that the interfer-
ence is outside of the passband.
FT 9000 C O
DX ONTEST
I I I I I
NTERFERENCE NTERFERENCE NTERFERENCE
NTERFERENCE NTERFERENCE
( SSB/CW/RTTY/PKT M
PERATION
A
IF BANDWIDTH
M
PERATION ANUAL
R R R R R
EJECTION ( S S S S S
EJECTION EJECTION
EJECTION EJECTION
LCD Display
VDD
[ SHIFT ] Knob
IF Shift system may be
observed on the LCD
B
Desired Signal Desired Signal
QRM
IF BANDWIDTH
)
3 3 3 3 3
IGN IGN IGN IGNALS ALS ALS ALS WITHIN WITHIN WITHIN WITHIN KHZ KHZ KHZ
IGN ALS WITHIN KHZ KHZ
)
ODES
BIAS TEMP SWR
C
QRM
IF BANDWIDTH
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