Ugly Capehart Score(?)

[kbmuri]

The CRT is a G.E. 10BP4A. I put the Beltron on it and it scored 90% on emission but the life test was 5 seconds (expected 10 seconds or more). I ran it through the cleaning cycle (not a rejuve cycle). Then it scored 100% on emission and 8-9 seconds on the life test. I expect it to be bright and very useable. Excellent results.

Can anybody ID the CRT in the Sonora metal portable? There's no model number on it, and no tube chart inside or under it. My Sams collection stops around 1951, don't see it in there. The CRT neck and socket have no markings whatsoever, leading me to think it's a rebuild, but I don't want to pull the yoke to see for sure. It tests as NOS on my Beltron (100% emission and 13-14 seconds on the life test). I need to know if the CRT will fit another set of mine. It's a 16 or 17-inch diagonal.

[fsjonsey]

Originally Posted by kbmuri

The CRT is a G.E. 10BP4A. I put the Beltron on it and it scored 90% on emission but the life test was 5 seconds (expected 10 seconds or more). I ran it through the cleaning cycle (not a rejuve cycle). Then it scored 100% on emission and 8-9 seconds on the life test. I expect it to be bright and very useable. Excellent results.

Can anybody ID the CRT in the Sonora metal portable? There's no model number on it, and no tube chart inside or under it. My Sams collection stops around 1951, don't see it in there. The CRT neck and socket have no markings whatsoever, leading me to think it's a rebuild, but I don't want to pull the yoke to see for sure. It tests as NOS on my Beltron (100% emission and 13-14 seconds on the life test). I need to know if the CRT will fit another set of mine. It's a 16 or 17-inch diagonal.

Could be a 17avp4?