1963 Zenith 29JC20 restoration

[Tomcomm]

I have been sensitive to narrow band R-Y, B-y chroma verses wide band I,Q chroma since I got my 21CT55 up and running. This was my observation of picture quality based on a side by side comparison with a CTC 4.


When I bought my 21CT55 for $50 in '64, I brought it into the house after I got it working and ran it along side my Dad's old CTC4 he left me. Both had 21FBP22s so it was a good comparison of narrow bw color R-Y B-Y vs. full bw color I Q. The extension of full color into fine detail on the CTC2B was startling! Color persisted in fireworks until extinction which I never saw before. The CTC4 fireworks turned into white long before extinction. The CTC2B carried full color way into the shadows, the CTC4 went gray to black. I kept the CTC4 in the house for the kids but brought the CTC2B back to the garage workshop for further study. Ease of working on the chassis and CRT "forced" me to destroy the cabinet and configure the remains into the vertical chassis configuration I am blessed with today. That’s alright with me. I respect the original CT restores but that’s not my thing.

[Zenith6S321]

Thanks for the kind words guys. Your assistance to overcome difficulties with these old sets really helps.

Dave