Ten-Tec JUPITER - Page 13

Be sure to keep both speaker leads
ungrounded
if
you
connect
them
to
any station accessories.
1.4. FRONT PANEL
CONNECTORS AND INDICATORS
Three front panel jacks connect the
operator’s microphone, key or keyer,
and headphones to the transceiver. Four
LEDs provide the operator with
transceiver status information.
1.4.1. PHONES
This
is
a
standard
jack
used
for
connecting
8-ohm
stereo
or
mono
headphones.
However,
because
dropping
resistors
reduce
the
output
to
headphone
level
at
this
jack,
it
cannot
provide
sufficient
audio
level
to
drive
an
external
speaker.
Use
the
rear
panel
EXT
SPEAKER
jack
for
that
purpose.
1.4.2. KEY
Two methods are available for keying
the transceiver in CW mode. The front
panel KEY jack provides CW with a
straight key, bug, or external keyer. To
use JUPITER's internal keyer with your
iambic or single lever paddle, refer to
Figure 3 and use the 1/4" stereo plug
(#35017) supplied in the packing kit. A
front panel MENU function allows the
operator to configure the jack to accept
either a monaural (2-circuit — *mono"
input (like a straight key, bug, or
external keyer), or a "stereo" paddle
input. The factory value on power-up
(or RESET) is to accept a *mono" input.
Older Ten-Tec keyers with a phono plug
output will work with JUPITER via a
RadioShack™ рай #274-320 (ог
equivalent) male phono plug to 1/4"
mono male adapter. Refer to paragraph
3.2 for more information оп MENU
functions.
12
common
Figure
1-2
Paddle
Wiring
for
Built-in
Keyer
1.4.3. MICROPHONE
The Ten-Tec standard 4-pin MIC jack
accommodates a low impedance microphone
and
provides
a
polarizing
voltage
of
+9
VDC to power an electret microphone. Any
Ten-Tec microphone, using our 4-ріп
connector,
works
without
change.
Most
dynamic,
ceramic,
crystal,
or
electret
microphones also work with this transceiver.
When adapting another microphone for use
with JUPITER, please refer to the wiring
diagram in Figure 1-3. The JUPITER
packing kit includes а spare 4-ріп
microphone plug (#35057). Be sure to use
shielded са е to prevent апу КЕ
interference. Electret microphones and
some with built-in preamplifiers will require
the *9 VDC available at pin 4.
PTT
Front View of 538
Figure 1-3 Microphone Connections
74269 Second Printing
Моде! 538 JUPITER
30 August, 2001