16 Specifications
1-800-773-7931 WWW.PALSTAR.COM
Front Panel Indicators and Controls
Metering PEAK and PEAK HOLD Dual movement cross
needle power and frequency compensated coupler
Controls
Input Tuning Dual-stator differential capacitor (430 - 13 - 430) pF,
5 kV) with 6:1 precision vernier drive
Inductance 15 µH roller inductor; 12 ga. Wire wound on steatite
ceramic core, silver plated bar/wheel 6 position:
Coax 1 tuned and tuner bypass, coax 2 tuned and
tuner bypass, bypass and balanced antenna
Antenna Selector Switch 6 position: Coax 1 tuned and tuner bypass
Coax 2 tuned and tuner bypass
Bypass
Switch wafers are (3kV rated)
Power Range Switch 2 position 300 W /3000 W
Rear Panel Connectors
BYPASS SO239 connector
COAX 1 SO239 connector
COAX 2 SO239 connector
COAX-BAL-WIRE SO239 connector
RF INPUT SO239 connector
12 VDC Input Adaptor for meter light 2.1 mm con. (center positive)
Other
Frequency Coverage 1.8 — 54 MHz
Power Maximum 2000 W PEP SSB, 1500 W single tone continuous
Impedance Range 20 to 1500 Ω 160 m to 10 m (assuming resistive
load) Reduce power for lower Z range
Balanced Output Optional External Balun
Dimensions 5.75”H x 13.2”W x 12”D (incl. terminals)
Weight 12 lbs.
Materials Chassis and top cover is 11 ga. (.090) aluminum
that has been chem.-film treated in gold color. Front
Panel powder-coated and epoxy screened.
General Description 5
1-800-773-7931 WWW.PALSTAR.COM
The Palstar AT2KD Antenna
Tuner is an American made im-
pedance matching network that
can provide unbalanced and
balanced output (with an op-
tional external balun).
The A2KD 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 AT2KD also measures the
power and Voltage Standing
Wave Ratio (SWR) which allows
you to tune the SWR to the low-
est ratio possible for the se-
lected transmission frequency.
The AT2KD 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.
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.
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