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Page 50 FT
DX
1200 OPERATING MANUAL
INTERFERENCE REJECTION
R.FLT
(
ROOFING FILTERS
)
1arrow-band 5oo¿ng Filters of 1 kH], 6 kH], 3 kH] bandwidths are provided in the ¿rst IF, right after the ¿rst mixer.
These ¿lters provide protection for the nd mixer, 'S3, and other circuitry that follow and can dramatically improve
reception on a very crowded band during a contest, etc.). Typically, the $UT2 selection mode is satisfactory for most
operating situations.
3ress the
[
R.FLT
]
button to toggle the 5oofing Filter
selection.
AUTO*
1
Æ
3 kHz
Æ
6 kHz
Æ
15 kHz
Æ
AUTO
.....
*1 The “$UT2” selection mode selects the optimum bandwidth of
the 5oo¿ng ¿lter for the reception mode.
In this case, the selected bandwidth in the 5.FLT column of the
.ey Function 'isplay glows green 1ormally glows blue).
ADVICE:
In the $0F0 mode, only the 1 kH] 5oo¿ng Filter
is utili]ed.
$s you repeatedly press the
[
R.FLT
]
button, the
selected 5oo¿ng Filter bandwidth will be displayed
in the 5.FLT column of the .ey Function 'isplay
on the TFT display, denoting the 5oo¿ng Filter cur-
rently in use.
Typically, this selection will be set to “$UT2.”
QUICK POINT:
The “$UT2” selection of the 5oo¿ng Filter is based on
the operating mode. However, you may override the au-
tomatic selection, if band conditions warrant a different
usually, a tighter) selection.
[
R.FLT
]
Button
TERMINOLOGY:
$5oo¿ng Filter,” as its name implies, places a “5oof”
over the receiver IF system bandwidth. Starting at the
¿rst mixer, the 5oo¿ng ¿lter protects the circuitry down-
stream from strong signals, just as a roof on a house
protects the contents from rain and snow.
KEY FUNCTION DISPLAY
Indicates the receiver
,)5RR¿QJ)LOWHU
52


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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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