12
Operating Your AT1KM
1-800-773-7931 WWW.PALSTAR.COM
Before Operating
1. To avoid possible damage to the
AT1KM set INPUT, OUTPUT, IN-
DUCTOR, and POWER RANGE
switches as outlined in the charts be-
fore applying transmitter power.
2. Begin tuning with your transmitter/
lamp 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 apply-
ing transmitter power (see chart).
Actual settings will vary from antenna
to antenna.
3. Set your transmitter/amp to a low
power output. If your transmitter has a
TUNE position, select that position.
4. If you use a linear amplifier, set it to
Standby. Do not use the linear ampli-
fier until the AT1KM is tuned.
Do not
exceed 800 watts average (single
tone)
.
5. Set RANGE switch to 300 W
(button out).
6. Set the DIRECT/TUNED mode
switch to BYPASS or the position
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 selec-
tion.
7. Rotate the INPUT, ANTENNA and
INDUCTOR controls for maximum
noise or signal as heard on your re-
ceiver. Refer to preset tuning chart
below.
WARNING: DO NOT OPERATE THE AT1KM
WITH THE COVER OFF.
TUNE INDUCTOR
SUGGESTED ACTUAL SUGGESTED ACTUAL
160 M
55 67
80 M
54 264
60 M
53 304
40 M
52 323
20 M
49 349
17 M
43 350
15 M
42 354
12 M
45 353
10 M
45
350-352
BAND
General Description
5
1-800-773-7931 WWW.PALSTAR.COM
The Palstar AT1KM Antenna
Tuner is an American made im-
pedance matching network that
can provide unbalanced and
balanced output.
The AT1KM optimizes the per-
formance of your antenna and
transmitter or SWL receiver by
providing adjustable impedance
matching using a T-type circuit
configuration with a dual-stator
differential variable capacitor.
The AT1KM 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 AT1KM also features a pre-
cision roller inductor with a stea-
tite ceramic core. The innovative
differential capacitor design sim-
plifies operation by reducing 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 AT1KM 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.
