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Page 19FT
DX
1200 OPERATING MANUAL
FRONT PANEL CONTROLS & SWITCHES
[
NOTCH
]
Switch
3ressing this button allows you to adjust the center
freTuency of the IF 1otch ¿lter using the
[
NOTCH
]
knob. While activated, the “
NOTCH
” indicator in
the 'S3 display illuminates. 3ress the
[
NOTCH
]
switch brieÀy to toggle the IF 1otch ¿lter onoff.
[
NOTCH
]
Knob
3ress the
[
NOTCH
]
switch to turn the IF 12TCH
¿lter on or off. 5otate the inner
[
NOTCH
]
knob to
adjust the center freTuency of the IF 12TCH ¿lter.
The null position of the IF 12TCH filter can be
observed on the display. Furthermore, the display
will show the center freTuency of the IF 12TCH
¿lter for 3 seconds whenever the
[
NOTCH
]
knob is
turned.
[
CONT/APF
]
Knob
CONT
In the SSB, $0, and F0 modes, press the
[
CONT/
APF
]
switch then turn the outer
[
CONT/APF
]
knob
to select the desired C21T2U5 ¿lter response. The
C21T2U5 ¿lter is engaged via the
[
CONT/APF
]
switch.
APF
In the CW mode, press the
[
CONT/APF
]
switch and
then turn the outer
[
CONT/APF
]
knob to select the
desired $3F $udio 3eak Filter) response. The $3F
is engaged via the
[
CONT/APF
]
switch.
[
CONT/APF
]
Switch
3ressing this button allows you to select the 'S3
Contour filter response using the
[
CONT/APF
]
knob. While activated, the “
CONTOUR
” indicator
in the 'S3 display illuminates. 3ress the
[
CONT/
APF
]
knob brieÀy to toggle the IF Contour ¿lter on
off.
In the CW mode, pressing this button will activate
the $3F $udio 3eak Filter) which provides a very
narrow audio bandwidth. While activated, the “
APF
indicator in the 'S3 display illuminates.
[
SHIFT
]
Knob
(
EXCEPT ON AM AND FM MODE
)
5otate the inner
[
SHIFT
]
to move the passband of
the IF 'S3 filter by 0 H] steps. The total adjust-
ment range is 1 kH]. The position of the passband
can be observed on the display. Furthermore, the
display will show the shift value of the IF SHIFT for
3 seconds whenever the
[
SHIFT
]
knob is turned.
[
WIDTH
]
Knob
(
EXCEPT ON AM AND FM MODE
)
5otate the outer
[
WIDTH
]
knob to set the overall
bandwidth of the IF 'S3 filter. Counter-clockwise
rotation reduces the bandwidth, while clockwise
rotation increases the bandwidth. The current band-
width can be observed on the display. Furthermore,
the TFT display will show the bandwidth of the IF
passband for 3 seconds whenever the
[
WIDTH
]
knob
is turned.
[
BK-IN
]
Switch
This button turns the CW break-in capability on and
off. While CW break-in is activated, the “
BK-IN
icon appears in the TFT display.
[
AF
]
Knob
The inner
[
AF
]
knob sets the receiver audio volume
level. Typically, you will operate with this control set
between the o’clock and 10 o’clock positions.
[
RF/SQL
]
Knob
ADVICE:
This control may be selected between the “SQL” and
5F G$I1” functions via the 0enu Item “
038 RF
SQL VR
”.
RF
The outer
[
RF/SQL
]
knob is the receiver 5F gain
control, which adjusts the gain of the receiver 5F
and IF ampli¿er stages. This control is normally left
in the fully clockwise position.
SQL
This knob sets the signal level threshold, below
which the receiver audio is muted, in all modes. It
is very useful during local rag-chews, to eliminate
noise between incoming transmissions. This control
is normally kept fully counter-clockwise off), ex-
cept when scanning and during F0 operation.
[
MONI
]
(
Monitor
)
Switch
This button enables the transmit monitor in all
modes. While activated, the
MONI
” icon appears in
the TFT display.
A
DVICE:
When using headphones, the 0onitor function is
very helpful while adjusting the 3arametric (Tual-
i]er or other voice Tuality adjustments. The voice
heard in the headphones represents the transmitted
audio Tualities.
21


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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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