FOR SALE: Beautiful Homebrew 4-400A Pair Linear Amplifier - excellent shape. Here is a self-contained desktop 2000 watt linear amplifier for 80-10m. Uses the tried and true combination of TWO 4-400A EIMAC tubes. Comes with complete documentation and the original article from which it was built. Has VACUUM VARIABLE plate capacitor. Full metering of BOTH TUBES grid current (switchable.) Also has meters for 3000V Plate Supply Voltage, plate current, and RF output. Needs AC fuse holder replaced and one resistor is broken. Everything else checks good and the power supply is tested OK. Cabinent is thoroughly shielded inside and out. Hinged lid for easy access. Comes with a schematic, notes, and the complete, detailed construction article. Wired for 120V AC operation and comes with locking power cord. Spare (NEW) Eimac 4-400A available with amplifier purchase for $50.00 New tube alone for $75.00 plus shipping. Available for $350.00 plus shipping (Heavy)
See: http://www.af4k.com/radios.htm Additional photos on request.
