RCA CPA Color Prototype

[Steve McVoy]

Pardon me for not posting to the original thread, but I can't find it.

It has been a while since I've had time to work on the CPA prototype that Nick Williams owns. When I left it in July it was producing a raster and a black and white picture.

Since then, the original CRT that came with the chassis has gone to air, so we are using a 15GP22 instead. Getting the chassis to work with the 15G was easy.

Next was to get the color demodulators working on NTSC. Today I got the set to produce a NTSC color bar pattern for the first time since probably 1953.

You can see the restoration of this chassis here:

http://www.earlytelevision.org/rca_cpa_restoration.html