Ten-Tec JUPITER - Page 32

3.9. SWEEP RANGE
This MNU item uses the MULTI control
to select one of JUPITER” s eight sweep
ranges listed below. They range from
quite narrow spans suitable for a look
either side of a narrow CW or digital
mode passband to wide survey sweeps
past ham band edges.
Sweep Widths
240 Hz
2.4 kHz
12 kHz
Table 3-2 JUPITER Sweep Ranges
3.10. High Boost
HIGH BOOST increases the relative
level of higher frequencies in the
receiver audio as an aid to operators
whose hearing has some loss at those
frequencies.
3.11. Contrast
This MNU item adjusts the contrast of
the front panel display to suit ambient
lighting conditions and operator taste,
3.12. Noise Blanker
This position provides OFF/ON control
of the DSP Noise Blanker via the
MULTI control.
3.13. NB Selection
In this position of the MNU highlight,
MULTI sets the Noise Blanker to one of
seven threshold levels.
3.14. Speech Processor
When you select SPEECH PROC in the
MNU, MULTI sets the relative level of
transmit speech processing from 0 to
74269 Second Printing
Model 538 JUPITER
30 August, 2001
100%. A moderate amount of speech
processing increases the “punch” of your
signal, but too high a setting impairs
intelligibility.
3.15. Using External Amplifiers
3.15.1. OPERATION WITH A МОМ —
QSK AMPLIFIER
The EXY T/R phono connector provides
an open collector output for keying а
non-QSK linear amplifier Тһе EXT
T/R DELAY menu function uses the
MULTI knob to control the transmit-to-
receive changeover (hang) time on the
EXT T/R output. It is useful for keying
а non- Ten-Tec external linear amplifier.
The range of adjustment runs from very
short to a maximum of 2.6 seconds.
This guards against hot-switching your
amplifier.
Refer to Figure 3-1 for required
connections and use shielded cable for
the keying line. The EXT T/R
connection is по! a relay similar to those
found on many older transceivers. It is a
transistor switch rated for a maximum
of 24 volts and 200 mA оп the keying
line of your amplifier.
Many vacuum tube linear amplifiers
such as those formerly manufactured by
Collins, Drake, and Heathkit use keying
voltages of 100 volts or higher. Further,
some older amplifiers have a negative
keying voltage instead of positive.
You cannot connect these directly to
JUPITER. Please check your linear
amplifier operator's manual before
connecting the equipment to
JUPITER.
ТЕ your amplifier does use negative
keying polarity or а higher keying
voltage or current value than JUPITER
can tolerate, you must use an isolation
relay or equivalent level-shifting circuit
in the control line between your linear
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