THREE_CHANNEL_420_TO_450_MHz_ATV_TRANSMITTER

Published:2009/6/18 4:59:00 Author:May | From:SeekIC

This transmitter is a 2-watt PEP output device for 420- to 450-MHz amateur TV operation. It has three crystal-controlled channels and will accept standard NTSC video input. It also has a 4.5-MHz sound subcarrier capability. Because this transmitter has AM modulation, audio can be transmitted in AM form on the RE carrier by applying audio to the video input. Bandwidth of audio can be restricted to 20 kHz by placing a 0.002-pF capacitor across R34. A complete kit of parts, including PC board is available from North Country Radio, P.O. Box 53, Wykagyl Station, New Rochelle, NY 10804-0053A.



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