You could do one better if you make an S-video input. If you have a source of S-video, like a Channel Master CM7000 converter box. Then you would not have any cross luma-cross chroma degradation. You need to find the place in the TV set where the composite signal is separated into luma and chroma, where it feeds the luma delay line, and chroma decoder, and inject a buffered and amplified luma and chroma at those points. S-video on a CT100 should look really good, with the real red, green and blue in the CRT.
I modified a CTC100 diagram showing how I'd build it. Needs a 2nd 6CL6 tube. You need one for luma, and a separate one for chroma. I haven't built it, don't have a CT100, so YMMV. Use a pair of the interface circuits
http://www.antiqueradio.org/art/RCA_...pter_Plans.jpg to feed the 6CK6 tubes in my diagram. Though, for the chroma interface circuit, omit the DC restore diode, and change the bias so the chroma 6CL6 doesn't clip.
01-23-2013, 07:53 PM
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