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Mystery solved?
Tim, I hope you still have this kit TV set. A good friend of mine just gave me an unbuilt tube color-TV kit, and it is likely the same one that you have. I compared things such as part locations on the convergence board and some of the tube layout and numbers on the chassis from your pictures, and they match.
Your set is likely a CTV-20-K made by Commercial Trades Institute in Chicago, Illinois. I have not yet checked everything that I have, but it might include full documentation of the set if we are lucky. The bad news is, we did not yet find the main chassis for this kit. But, I do have the CRT and, with luck, all of the other parts of the kit, as well as most or all of the original lessons and exam materials that were apparently spread over 20 segments, each with its own board or other set of parts as the kit as built. Mine is from late 1973, from the dates on a few of the parts such as the UHF tuner. That is VERY late to be selling an all-tube color TV set, but the logic was probably "This is what your customers will be bringing in for repair". If you never did fix your set's vertical problem, maybe I can find the schematic or other information to help.
How did I find your three-year-old discussion? I did a Google search for the 19GWP22 CRT in the kit. (-:
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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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