Reverse Cw Sideband - Yaesu FT-1000MP Operating Manual

Operation
rWsde Selection
Press the mode button (to the left
of the main tuning knob) correspond-
I I O LSBI /
ing to the mode you wish to operate
- -
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for now, we suggest an SSB mode:
@?zi i J
USB if you have selected a band
rn
above 10 MHz, or LSB otherwise. The
green LED in each button indicates
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the selected band, and an a pair of
rn
LEDs within the bandwidth panel (to
the left of the mode buttons) indicates which IF
filter pair is currently selected for that mode.
CW and RPTY have "reverse" modes that are
selected by pressing their button twice (see the
box at the right), and AM Synchronous tuning is
activated in the same manner. Asso, Packet op-
eration can be toggled laetween LSB and
FM
(for
29 MHz operation) in the same way. These spe-
cial features are covered later.
Additionally, notice that the bargraph meter
format changes to the appropriate tuning display
for the selected m d e (covered later).
If you have selected
an
SSB mode, both 2.4K
LEDs (2nd & 3rd IF) should be lit. If not, press
2 . 4 ~ .
This bandwidth provides good fidelity for
SSB reception and should be used unless QRM
from stations on adjacent frequencies becomes a
problem (as described later). The selectable
bandwidth (filter combination) depends on which
optional IF filters you have installed; therefore
some combinations may not be possible,
Adjust the
MAIN
AF
GAIN
(in- AF
GAIN
ner) control for comfortable
MA'N
volume on signals or noise in
the loudspeaker or head-
phones. The outer
sue
AF
GAIN
control is used with the Sub
VFO operation and is ex-
plained in greater detail later.
-
Special Note for CW Mode
-
Reverse CW sideband
When you switch modes between CW and
USB, you may notice that the frequency of
received signal stays the same (even though
the panel frequency may change slightly).
Also notice that the pitch of a received signal
decreases as you increase the dial frequency.
However, switching to LSB from CW normally
requires retuning the desired station. This can
be especially inconvenient if you enjoy
working the lower W F bands (40 meters and
below) where LSB mode is used.
To eliminate the need for retuning in this
situation, you may switch the receiver CW
carrier oscillator injection to the reverse
side(LSB). When you press ew, you should
notice that the green LED in the USE3 mode
button blinks for a second or two. This informs
you of the default carrier offset (upper) for CW.
To switch to lower injection side by simply
pressing the C V V button again, you should see
the displayed frequency shift and the LSB
When using the reverse sideband (LSB) for
CW reception, you can freely switch between
LSB and CW without having to retune a
station. Note that in LSB and CW modes the
received signal pitch now increases as you
increase the dial frequency.
To return the receiver to the default (upper)
sideband, simply press Cw again.
C a r r ~ e r
N o r m a l C W
C a r r ~ e r
Operating Nint
-
an added benefit from this
feature is Q R M rejection. If you have
interference on a CW station that the IF SHIFT
does not eliminate, you can try switching to the
reverse sideband, retuning the signal, and
trying the IF SHIFT again.
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