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Page 53FT
DX
1200 OPERATING MANUAL
IF BANDWIDTH
Desired Signal Desired Signal Desired Signal
QRMQRM
IF BANDWIDTH IF BANDWIDTH
SHIFT SHIFT SHIFT
INTERFERENCE REJECTION
IF SHIFT OPERATION
(
SSB/CW/RTTY/PKT MODES
)
IF SHIFT allows you to move the 'S3 ¿lter passband higher or lower, without changing the pitch of the incoming sig-
nal, and thus reduces or eliminates interference. Because the carrier tuning freTuency is not varied, there is no need to
re-tune the operating freTuency to eliminate the interference. The total passband tuning range for the IF SHIFT system
is 1 kH].
1. 5otate the
[
SHIFT
]
knob to the left or right to re-
duce the interference.
A
DVICE:
The display will show the shift value of the IF
SHIFT for 3 seconds whenever the
[
SHIFT
]
knob is
turned.
5eferring to Figure “
A
”, note the depiction of the
IF 'S3 ¿lter as the thick line, with the
[
SHIFT
]
knob in the 1 o’clock position. In Figure “
B
”, an
interfering signal has appeared inside the original
passband. In Figure “
C
”, you can see the effect
of rotating the
[
SHIFT
]
knob. The interference
level is reduced by moving the ¿lter passband so
that the interference is outside of the passband.
[
SHIFT
]
Knob
A B C
SHIFT INDICATOR
55


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  • Green Light on VFO A and MEM is flashing and no audio. Even tried Factory Reset and still flashing. How do I fix this? Submitted on 6-12-2022 at 07:37

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