Yaesu FT DX 1200, Operation Manual

Page: 84 / 140

Page 82
FT
DX
1200 O
PERATING
M
ANUAL
CW C
ONVENIENCE
F
EATURES
U
SING
CW R
EVERSE
If you experience a dif ¿ cult interference situation, where an interfering station cannot readily be eliminated, you may
wish to try receiving using the opposite sideband. This may move the interfering station’s fre T uency in a direction that
may lend itself more readily to rejection.
1. To start, let’s use a typical example where you have
set the CW mode using the default “USB” injec-
tion).
. 1 ow be sure your mode selection is still set for VF 2 -
$ , and then press and hold in the [ MODE
] button for
one second. The “LSB” and “CW” will appear in the
display, indicating that the “LSB” injection side has
now been selected.
3. To return to the normal USB) injection side and
cancel CW 5 everse operation, press and hold in the
[
MODE
] button for one second.
the “USB” and
“CW” will appear in the display).
N
OTES
:
ˆ
When CW 5 everse is engaged, the action of the Tun-
ing 2 ffset Indicator will also be reversed
ˆ
When the incoming signal pitch tone is properly
aligned, the central red marker lights up whether or
not CW
5 everse is engaged.
In the illustration, Figure “ A ” demonstrates the
normal CW injection setup, using the USB side.
In Figure “
B ”, CW 5 everse has been engaged to
receive using LSB-side injection and eliminate
interference.
The bene ¿ cial effect of switching sidebands can
be clearly seen in this example.
[MODE] Button
A
B
Normal CW
(USB)
Carrier
Carrier
QRM
QRM
Signal
RX Passband
RX Passband
Signal
CW Reverse
(LSB)
Retune: Shift to Lower Frequency
Retune: Shift to Higher Frequency
Zero-In