Ten-Tec JUPITER - Page 21

А and МЕО В displays will now
exchange contents, each transferring its
frequency and mode to the other one.
A=B copies the МЕО A frequency and
mode to the VFO B register.
2.4.7. Lock Button
Pushing the LCK button locks the main
tuning to prevent disturbing JUPITER's
frequency by inadvertent movement of
the knob. А nearby red LED lights
when the frequency is locked. Push
LOCK again to re-activate the tuning
knob.
2.4.8. RIT & ХІТ Buttons
Alternate presses of Ше RIT button
activate or disable the RIT/XIT
(Receiver / Transmitter Incremental
Tuning) control. In the active RIT state,
the control offsets the receiver frequency
from that in the VFO A display without
changing the transmit frequency. The
control has a +/ 10 kHz range. The
setting appears at the right of the display
under the VFO A frequency range. RIT
is normally off.
XIT offsets the transmit frequency from
that in the VFO A display without
changing the receive frequency.
Otherwise it works the same as RIT and
is normally off.
JUPITER will activate only one of the
Incremental Tuning modes at a time.
2.4.9, Mode Selection
JUPITER transceives in USB, LSB, CW,
AM and FM modes within the 160
through 10-meter amateur bands. Use
either USB or LSB as appropriate for the
digital modulation modes (RITY,
AMTOR, PSK31, PACTOR, et cetera).
Select the modulation mode by repeated
presses of the MODE button until the
desired mode shows on the display to the
left of the VFO A readout.
2-6
2.4.10. VFO Operation
JUPITER has two tuning registers or
“VFOs”, each of which displays and
holds
an
operating
frequency
and
mode.
The larger (main) display is VFO A.
VFO B is the smaller (alternate) display.
To the left of each VFO readout is one
of
the
following
legends:
RxTx,
Rx,
Tx,
or a blank. They keep the operator
aware of which VFO is active in receive
and transmit states.
Before transmitting, it is wise to note
which frequency the active transmit
VFO holds.
2.4.11. Split Operation Example
When the SPLIT mode is active, the
receiving frequency and mode are in the
A display (marked Rx) and the
transmitting frequency and mode are in
the
B
display
(marked
Tx).
Pressing
SPLIT again restores the RxTx
designator to VFO A and leaves VFO B
with inactive status.
For example: a DX station 5
transmitting on 14.195 and listening for
calls around 14.200. Tune the VFO А
display frequency to the calling
frequency near 14.200. Tap the A=B
button
to
equalize
both
VFOs
at
14.200.
Tap
the
SPLIT
key.
Now
retune
VFO
A
to
the
DX
at
14.195.
МЕО
A
now
controls the receive frequency. VFO B
controls your transmit frequency and
you are ready to join the action.
2.4.12. Reverse-Split Example
With
JUPITER
іп
SPLIT-frequency
operation,
the
momentary-action
REV
key
exchanges
the
frequency
and
mode
between
VFOs
A
and
B
while
you
press
it.
REV
is
a
convenient
operating
aid
in
situations
such
as
the
one
below.
74269 Second Printing
Model 538 JUPITER
30 August, 2001