U20539 Used Elecraft KPA500 Solid State Amplifier 500 Watts 160-6M

U20539 Used Elecraft KPA500 Solid State Amplifier 500 Watts 160-6M

This pre-owned Elecraft KPA500 linear amplifier is in perfect cosmetic and physical condition with no flaws, scuffs, or blemishes. The matte-black anodized front panel, backlit character LCD, multi-color LED bargraphs, and tactile band-selection pushbuttons are pristine. On the rear chassis, the high-volume cooling exhaust fan, SO-239 RF input/output ports, RS-232 serial control jacks, AUX1 D-sub connector, RCA keying/ALC jacks, and AC mains rocker switch are immaculate with clean contacts and bright plating. It comes configured with a 220V/240V AC power cord, control interface cables, a printed owner's manual, and a parts envelope containing the factory Allen wrench.

The Elecraft KPA500 is a compact, high-efficiency solid-state power amplifier delivering 500 Watts of continuous or PEP output across all amateur bands from 160 meters through 6 meters (1.8 to 54 MHz). Powered by a rugged, highly linear modern LDMOS transistor pair, it requires only 25 to 40 Watts of RF drive, making it a natural companion for 100W transceivers as well as QRP rigs equipped with a low-power driver. It features instantaneous silent PIN-diode T/R switching for seamless full-break-in CW (QSK) and fast digital modes (FT8, RTTY). With automatic band switching via RF frequency counter or transceiver CAT tracking, extensive microprocessor protection against high SWR and overdrive, variable-speed whisper cooling, and seamless integration with the matching KAT500 auto-tuner and K3/K3S series transceivers, the KPA500 represents the pinnacle of compact, reliable desk power.

Condition

• Cosmetic Condition: Perfect condition throughout. Free of scratches, nicks, or cosmetic blemishes on all cabinet surfaces and front bezel.

• Front Panel & Controls: Backlit LCD telemetry screen is clear, LED power/SWR bargraph lenses are spotless, and all push-buttons and power switches click firmly.

• Rear Panel & Connections: RF input and output SO-239 ports, grounding post, RCA sockets, and D-sub control interfaces are clean and tight. Exhaust fan and finger guard are pristine.

• Cables & Hardware: Includes a heavy-duty 220V/240V power cord, secondary AC cable, rig control patch cables, manual, and the original small envelope containing the Allen hex key. (Note: Internal transformer taps and voltage switch should always be verified to match your local mains supply before operating).

Key Features

• 500W Output Power: Delivers a solid 500 Watts continuous or PEP on 160M through 6M in SSB, CW, and digital modes.

• Low Drive Requirement: Achieves full output with just 25W–40W of input drive.

• No Warm-Up / Instant-On: Solid-state architecture provides immediate full-power operation without tube warm-up delays.

• Full Break-In (QSK) CW: Ultra-fast, silent PIN-diode transmit/receive switching enables effortless QSK CW and fast-turnaround digital operation.

• Dual Multi-Color LED Bargraphs: Displays real-time peak/average Forward Power (up to 700W scale) and standing wave ratio (SWR).

• Advanced Monitoring & Protection: Microprocessor continuously tracks forward/reflected power, drive level, LDMOS junction temperatures, and supply rail voltages.

• Multi-Speed Low-Noise Fan: Proportional fan speed algorithm keeps internal temperatures low with minimal acoustic distraction.

• Extensive Transceiver Interfacing: RS-232, AUX1, and band-voltage inputs allow seamless automated tracking with Elecraft, Yaesu, Icom, and Kenwood rigs.

What's Included

• Elecraft KPA500 500W Solid-State Linear Amplifier

• 220V/240V AC Power Cable 
  

• Transceiver Interface Patch Cables

• Small Parts Envelope with Allen Hex Wrench

• Elecraft KPA500 Printed Owner's Manual 

Comes With Our 90-Day Warranty!

Serial Number: 4545

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