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Bill, here are answers to your questions:
1. What has to be added for CPA is the circuit that alternates the phase of the color demodulation every field. There are two tube sockets on the chassis that were originally used for that purpose, and we have some hints of the schematic from a RCA patent. We will also have to install a 3.89 mHz crystal and retune the oscillator circuits.
2. No, the flyback is good.
3. The set belongs to Nick Williams. He has some ideas for a cabinet, but I'm not sure what his final decision is. My own thought is that the best thing to do would be to make a plexiglass cabinet so that people can see the guts.
4. Nick has the original tube, so I've been using a 15GP22. The specs for both are very similar.
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