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AMPHF - 3-500ZHFLinear Amplifier I am downsizing due to loss of eyesight. My Homebrew amp I built over yes must go. It originally used a 4-400, and still could, but I converted it to a 3-500Z. The tube is in very good shape. Tuned input. It puts out 400 watts, with 600 watts input. 2000 volts at 300ma. The power supply is newer. Hardly used. 80 -- 10 meters. Must have valid license to purchase. I am an extra class since 1968, an EE professional engineer and an ex-ET in The Navy. $300 Plus $100 packing and shipping. Two boxes. I will ship tube in separate box for extra $25. USPS Money Order, or Walmart Money order. Listing #1766357 by K7RK Submitted on 04/28/26 Submitted from IP 15.218.34.22 Click to Contact Back to Previous Page

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