Palstar Used AT-5K HF Antenna Tuner

Palstar Used AT-5K HF Antenna Tuner SKU: ZUS-0905


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Used Palstar AT-5K HF Antenna Tuner

This top-of-the-line manual antenna tuner is rated at 3,500 watts and its high-efficiency design assures tuning a wide impedance range with low tuner losses. It covers 160 to 10 meters particularly well due to its use of custom components in critical circuit areas.  High-power balanced output is achieved via its 5 kW Teflon wire balun at the input of the tuner circuit. It has custom large plate variable capacitors (600pF @ 6 kV), it includes a Ferrite 1:1 input balun and a 10 Amp 7 kV Ceramic 3.25” body roller inductor (25 uH) wound with 10-gauge plated solid copper wire. It has a 6-position switchable antenna input switch, peak-and-hold dual cross needle metering with lighting and a cooling fan to extend operating duty cycles. This unit was purchased new and it is in “as new” condition and certified to have never been used on the air. All documentation, parts and shipping containers are included. This unit has been stored in air-conditioned home, non-smoker environment.
The new AT5K 3500 watt antenna tuner covers 15m to 160m with limited Z range on 10m with a power rating of up to 3500 watts PEP. The AT5K takes power handling to the next level over the AT4K, coming in with a rating of 3500 watts single tone continuous performance with low losses & wide Z range. Bands coverage is 160m to 15m with limited Z range on 10m. The AT5K provides balanced OUTPUT with high power 5kW TEFLON cable balun at the INPUT of the tuner circuit for excellent balanced feed antenna operation. The American made AT5K is a unique high-power tuner in the American Ham tradition. This tuner has been nick-named the "Rock Crusher" and is fast becoming the tuner of choice among Hams who demand the best and most robust antenna tuner on the market. The typical unbalanced tuner with a 4:1 balun at the OUTPUT exposes the balun to a wide variety of impedance and reactance that it was never designed to handle. Palstar's AT5K, like its AT4K little brother, has a T-matching network utilizing a 1:1 unbalanced-to-balanced transformer at the INPUT of the network. When the network is properly tuned, a 50 Ohm impedance will be presented both to the input and output of the balun, which allows it to properly perform its important transformation job. Featuring a 6 position antenna selector switch, the AT5K offers forward power metering in two ranges, 300 and 3000 watts. Inside the AT5K you'll find massive custom large-plate (600 pF) variable capacitors rated at 6 kV. This high capacitance means unsurpassed performance on 160 Meters, while specially designed non-metallic end plates allow a minimum capacitance of only 23 pF for 10 Meter tuning, unusually low for a variable capacitor this large. Equally massive is the 35 μH, 10 Amp, 7 kV, Ceramic-body inductor, which is wound with 10 Ga. plated copper wire with silver-plated wheel shaft and contact wheel. Palstar engineering has incorporated the technology found in our popular PM2000A wattmeter into this tuner to provide dual cross-needle metering with active peak and peak hold. Add 11 Ga. (.090" thick) iridite-treated aluminum metalwork and durable powder coated finish on the front panel and top cover, and you have the AT5K, Palstar's top of the line premium quality antenna tuner.
Output Power:3500 Watts single tone continuous, low tuner losses, and wide Z range
HF Bands:15m to 160m with limited Z range on 10m
Tuning:Three controls
Antenna switching:10 Amp RF 6 position mode switch for multiple antennas
Capacitor:custom large plate variable capacitors; 600pF@6 kV
Roller inductor:10 Amp 7kV ceramic 3.25" body roller inductor (35μH) wound with 10 Ga. plated solid copper wire, and silver-plated inductor wheel shaft and contact wheel
Metering:Active crossneedle Peak/Peak Hold with backlighting
Meter power range:0-300 Watts/
0-3000 Watts
Balun:Ferrite 1:1 input balun
Output:Unbalanced/Balanced activated by front panel switch with high power 5 kW Teflon wire balun at input of tuner circuit
Cooling:Fan cooling for extended 100% duty cycle operation
Chassis:.090 ga. aluminium gold iridite coated
Top cover:.090 ga. aluminium powder coated
Front cover:.090 ga. aluminium powder coated
Dimensions:16 1/4" wide x 8 1/4" high x 19 3/4" deep
Shipping weight:30 lbs
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