12
Operating Your AT1500DT
1-800-773- 7931 W W W .PALST AR.CO M
Before Operating
1. To avoid possible damage to the AT1500DT set TUNE, IN-
DUCTOR, and POWER RANGE switches as outlined in the
chart before applying transmitter power.
2. Begin tuning with your transmitter/amp into the tuner set at a
low output power setting (50-100 Watts).
Tuning
1. Select the band and frequency of desired operation.
2. Set TUNE and INDUCTOR controls to the suggested setting
before applying transmitter power (see chart). Actual settings
will vary from antenna to antenna.
3. Set your transmitter/amp to a low power output. If your trans-
mitter has a TUNE position, select that position.
4. If you use a linear amplifier, set it to Standby. Do not use the
linear amplifier until the AT1KM is tuned.
Do not exceed
1200 watts average (single tone)
.
WARNING: DO NOT OPERATE THE AT1500DT
WITH THE COVER OFF.
TUNE
INDUCTOR
SUGGESTED
ACTUAL
SUGGESTED
ACTUAL
160 M
47
73
80 M
47
256
60 M
46
293
40 M
47
321
20 M
46
351
17 M
47
356
15 M
44
357
12 M
42
357
10 M
47
360
BAND
General Description
5
1-800-773- 7931 W W W .PALST AR.CO M
The Palstar AT1500DT Antenna
Tuner is an American made im-
pedance matching network that
can provide unbalanced and
balanced output.
The AT1500DT optimizes the
performance of your antenna
and transmitter or SWL receiver
by providing adjustable imped-
ance matching using a T-type
circuit configuration with a dual-
stator differential variable ca-
pacitor.
The AT1500DT also measures
the power and Voltage Standing
Wave Ratio (VSWR or SWR)
which allows you to tune the
SWR to the lowest ratio possible
for the selected transmission
frequency.
The AT1500DT also features a
precision roller inductor with a
steatite ceramic core. The inno-
vative differential capacitor de-
sign simplifies operation by re-
ducing the number of knobs and
eliminates false peaks while
tuning. It also results in a more
compact case that takes up less
room on the operation desk.
Designed to handle both Bal-
anced line feeds and Coax
feeds the AT1500DT features a
front panel mounted switch to
select between feeds.
Tuning is achieved with the front
panel mounted controls. The
Vernier dial allows for tuning
with precision and accuracy,
while the Inductor crank handle
facilitates coarse adjustments.
