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Originally Posted by cbenham
Is the composite interface you added the one in the June, 1956, RCA Broadcast News?
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I know of two RCA circuits from that era. One used three 6BQ7's and the other a single 12AT7, which I built. It will be used this weekend at the ETF convention to demonstrate precisely what true NTSC color TV looked like in 1958 when the first color videotape program was broadcast.