Operation Manual

Page 106 FT DX 9000MP OPERATION MANUAL
USING CW REVERSE
If you experience a difficult interference situation, where
an interfering station cannot readily be eliminated, you may
wish to try receiving using the opposite sideband. This
may throw the interfering station’s frequency in a direc-
tion 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” injection)
onto the Main (VFO-A) receiver.
2. Now be sure your mode selection is still set for the
Main (VFO-A) register, and press the CW mode
key (# ) once more. The “LSB” LED will blink for
three seconds, indicating that the “LSB” injection side
has now been selected.
3. When using Dual Receive, just press the B Mode
key (# ), then press the CW key to engage CW
Reverse on the Sub (VFO-B) receiver, in exactly the
same was as for the Main receiver.
Press the CW mode key once more to return to the nor-
mal (USB) injection side and cancel CW Reverse opera-
tion.
CW CONVENIENCE FEATURES
In the illustration, Figure A demonstrates the normal
CW injection setup, using the USB side. In Figure
B, CW Reverse has been engaged, so as to receive
using LSB-side injection to eliminate interference.
The beneficial effect of switching sidebands can
clearly be seen in this example.
Retune
(Shift to Frequency)
Lower
Retune (Shift to Frequency)Higher
Zero-In
MODE Switch
Main Tuning Dial KnobBK-IN Switch
Note
When CW Reverse is engaged, the Tuning Meter action
will concurrently be reversed as to its indication.
When the incoming signal pitch tone is properly aligned,
the central LED lights up whether or not CW Reverse is
engaged.
RX Passband
RX Passband
Carrier
Carrier
QRM
QRM
Signal
Signal
Normal CW
( )
CW Reverse
( )
USB
LSB
B
A