Found: 15GP22 (I think)

[N2IXK]

Really looks like a test jig, but I can't see a service shop seeing enough color sets back then to justify such a thing. Perhaps from the development labs of a set maker who was planning to license the RCA designs?

The fact that the tube is a commercial 15GP22, and not the developmental type C-73599 would lead me to believe that this thing was built after the CT-100 was on the market.

[WISCOJIM]

Originally Posted by N2IXK

Really looks like a test jig, but I can't see a service shop seeing enough color sets back then to justify such a thing. Perhaps from the development labs of a set maker who was planning to license the RCA designs?

The fact that the tube is a commercial 15GP22, and not the developmental type C-73599 would lead me to believe that this thing was built after the CT-100 was on the market.

Perhaps a Motorola prototype or test jig? It was found in the middle of Motorolaland. (Although it lacks the copper mounts that went into Motorolas production models.)

[oldradio99]

I believe he worked for Motorola and Zenith.

[N2IXK]

That could explain it, then. Could have been part of a laboratory "breadboard" or something like that.

[earlyfilm]

Originally Posted by oldradio99

I believe he worked for Motorola and Zenith.

Interesting! Motorola started with RCA CRT's, then switched to CBS Hytron, then when the 19 inchers started failing in warranty, back to RCA CRT's.

James