Ten-Tec JUPITER - Page 23

and tracks them with a set of adaptive
filters. NR suppresses broadband noise
by as much as 15 dB depending upon the
noise statistics.
2.5.6. AN (Automatic Notch)
Pushing the alternate action AN button
enables this sophisticated DSP algorithm
and puts its indicator in reverse video at
the top of the screen. There is no
frequency adjustment for the automatic
notch. It seeks out and nulls all constant
carriers in the receiver passband. This
notch works well for SSB modes but is
not useful in CW nor digital modes
because it tends to notch out the desired
signal as well as the QRM.
2.5.7. 5 Meter
While JUPITER is receiving, the
“meter” at the right of the VFO B display
shows received signal strength in S-
units. Each S-unit represents а 6-dB
change in signal level. 59 occurs at the
standard 50 uV level. The meter has a
numeric readout and a bar graph.
In transmit, the same meter displays
either forward power (PWR) or standing
wave ratio (SWR) based on its MNU
setting.
2.5.8. Заџејсћ
This control is operational in all modes.
To adjust, push the SQL button to bring
up the SQUELCH bar graph and legend
which shows that the MULTI control is
connected to that function SQUELCH
mutes the receiver audio unless a signal
greater in strength than the control
setting is present. To set SQL properly,
tune to a clear frequency and adjust the
SQUELCH (via MULTI) control just into
the threshold for receiver muting.
2.5.9. RF Attenuator
This function, useful when very strong
signals overload the receiver, introduces
20-dB attenuation to all signals. То
2-8
enable ог disable Ше attenuator, push the
АТТМ button.
2.5.10. Lock
The LOCK button on the front panel
disables the VFO А tuning knob and the
optional Model 3023 tuning knob. With
LOCK enabled all other JUPITER
functions including direct frequency
entry from the serial port or Model 3027
keypad remain available. А red LED
above the button indicates the locked
condition.
2.6. TRANSMITTER AND
TRANSCEIVER OPERATION
2.6.1. CW Operation
Attach an appropriate CW keying device
to the fron panel KEY jack (see
paragraph 1.4.2). Select CW mode. The
default value of JUPITER's firmware is
to accept input from a straight key, bug,
or external keyer through the key jack
via a “толо” (2-circuit) ріш.
JUPITER's CW keying is full break-in
by default. Adjustable timing via the
MNU screen, detailed in paragraph 3.2,
can provide much longer switching
times between transmit and receive to
suit operator taste. MNU can also
enable JUPITER to accept input to the
internal keyer from your paddies. The
red ALC and TX LEDs on the front panel
will light during CW transmission.
2.6.2. Push-to-Talk USB/LSB
Operation
Select
either
USB
or
LSB
and
key
the
transceiver
by
pressing
Ше
microphone's
PTT
(push-to-talk)
button.
The
red
TX
LED
on
JUPITER's
front
panel
will
light
to
indicate
you
аге
now
transmitting.
While
speaking
into
the
microphone,
advance
the
MIC
control
until
the
red
ALC
LED
on
the
front
panel
begins
to
flash.
The
ALC
LED
indicates
that
the
transceiver
is
generating
full
74269 Second Printing
Model 538 JUPITER
30 August, 2001