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I use cable boxes as tuners (RF demodulators) for ham-radio TV signals (ATV, amateur television). Channels 57-60 are in the 70cm ham radio band, and a channel 3 input can be used to get audio and video from a downconverter (a device that converts other ham radio bands to TV channel 3).
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Chris
Quote from another forum: "(Antique TV collecting) always seemed to me to be a fringe hobby that only weirdos did."
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