Yaesu FT DX 1200 Operation Manual page 21

F
RONT
[ NOTCH ]
Switch
ressing this button allows you to adjust the center
fre uency of the IF otch lter using the [ NOTCH ]
knob. While activated, the "NOTCH" indicator in
S display illuminates. ress the [ NOTCH ]
the
switch brie y to toggle the IF otch lter on off.
[ NOTCH ] Knob
ress the [ NOTCH ] switch to turn the IF
lter on or off. otate the inner [ NOTCH ] knob to
adjust the center fre uency of the IF
The null position of the IF
observed on the display. Furthermore, the display
will show the center fre uency of the IF
lter for 3 seconds whenever the [ NOTCH ] knob is
turned.
[ CONT/APF ] Knob
CONT
In the SSB, , and F
APF ] switch then turn the outer [ CONT/APF ] knob
to select the desired C
lter is engaged via the [ CONT/APF ]
C T U
switch.
APF
In the CW mode, press the [ CONT/APF ] switch and
then turn the outer [ CONT/APF ] knob to select the
desired F udio eak Filter) response. The
is engaged via the [ CONT/APF ] switch.
[ CONT/APF ] Switch
ressing this button allows you to select the
Contour filter response using the [ CONT/APF ]
knob. While activated, the "CONTOUR" indicator
S display illuminates. ress the [ CONT/
in the
APF ] knob brie y to toggle the IF Contour lter on
off.
In the CW mode, pressing this button will activate
the F udio eak Filter) which provides a very
narrow audio bandwidth. While activated, the "APF"
indicator in the S display illuminates.
[ SHIFT ] Knob
( E
XCEPT ON
otate the inner [ SHIFT ] to move the passband of
the IF S 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
( E
XCEPT ON
otate the outer [ WIDTH ] knob to set the overall
bandwidth of the IF
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.
F T 12 00 O
DX PERATING
P
ANEL
TCH
TCH lter.
TCH filter can be
TCH
modes, press the [ CONT/
T U lter response. The
S
)
AM FM
AND MODE
)
AM FM
AND MODE
S filter. Counter-clockwise
M
ANUAL
C
ONTROLS
[ 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
A :
DVICE
This control may be selected between the "SQL" and
" F G I " functions via the
SQL VR".
RF
The outer [ RF/SQL ] knob is the receiver F gain
control, which adjusts the gain of the receiver
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 F
F
[ 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
very helpful while adjusting the arametric
i er or other voice uality adjustments. The voice
heard in the headphones represents the transmitted
audio ualities.
& S
WITCHES
enu Item "038 RF
operation.
onitor function is
Page 19
F
ual-