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KW amplifiers
    50 MHz, Push-Pull 4-400As, 1200 W, 1961. details
    HF+6M, 4CX1000A, 1500 W, 1971. details
    144 MHz, 4CX1000A, 1500 W, 1995. details

Small amplifiers
    HF, 8072, 200 W, 1992; see QEX, Nov 2001. photo
    50 MHz, 6146, 50 W, 1951.
    50 MHz, 2-6146, 100 W, 1963.
    144 MHz, 8072, 200W, 1988. details  

Conversions and modifications
    Heath SB-220, 50 MHz conversion.
    Raytrack, 50 MHz, modifications. details  


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