5_W_ATV_TRANSMITTER_FOR_440_MHz_Circuit Diagram World 
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2016-04-11 13:26  
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The circuit will produce typically 6 W RE output on synch tips. A crystal oscillator drives a doubler to produce a 220-MHz output.Another doubler produces 440 MHz to drive the power amplifier. A high-level series modulator provides the video modulation capa-bility. A sound subcarrier is generated using a VCO circuit and combined with the video information. A complete kit of parts, includ-ing the PC board, is available from North Country Radio, P.O.Box 53, Wykagyl Station, New Rochelle, NY 10804-0053A.