4
Table of Contents
1-800-773- 7931 W W W .PALST AR.CO M
Important safeguards
2
Table of Contents
4
General Description
5
Specifications
6
Installation
7
Unpacking
7
Location
7
Installation Procedures
7
AT1500DT Schematic
8
Rear Panel Connections 10
Front Panel Description
11
Operating Your AT1500DT 12
Before Operating
12
Tuning
12
Notes
14
Service and Warranty
15
Thank you for purchasing a
Palstar AT1500DT Antenna
Tuner. This antenna tuner has
been designed and manufac-
tured to high quality standards,
and will provide reliable opera-
tion for many years.
Please carefully read the
Owner’s Manual in order to take
advantage of the many interest-
ing features that will provide
years of enjoyable amateur
radio operation.
Operating Your AT11500DT cont’d
13
1-800-773- 7931 W W W .PALST AR.CO M
5. Set RANGE switch to 300 W (button out).
6. Set the DIRECT/TUNED mode switch to BYPASS or the posi-
tion matching your antenna connection. To tune your antenna,
the switch selection must be set to: COAX 1 TUNED, COAX
2 TUNED or WIRE (BALANCED ANTENNA). Selecting
COAX 1 DIRECT, COAX 2 DIRECT or BYPASS bypasses the
tuning selection.
7. Rotate the TUNE and INDUCTOR controls for maximum
noise or signal as heard on your receiver. Refer to preset tun-
ing chart below.
8. Key your transmitter and adjust the power level for a reading
of 100-150 watts on the FORWARD scale. Adjust the TUNE
and INDUCTOR controls for a minimum REFLECTED reading
while maintaining a FORWARD reading of 50-100 watts using
your transmitter power control.
9. Read the SWR on the red scale at the point where the two
needles intersect. Repeat tuning the TUNE and INDUCTOR
controls until the lowest SWR reading is obtained.
This procedure takes patience the first time. The
TUNE control varies the capacitor and provide
fine adjustments. The roller inductor crank con-
trol provides coarse adjustment.
10. When you have tuned your antenna to the best SWR, record
the settings of the INPUT, ANTENNA and INDUCTANCE
controls on the chart above for future reference. When you
retune, use these settings as your starting point.
