Videokarma.org TV - Video - Vintage Television & Radio Forums - Can a 5BP4 be tested on a Sencore CR-7000?

Videokarma.org TV - Video - Vintage Television & Radio Forums (http://www.videokarma.org/index.php)

- Early B&W and Projection TV (http://www.videokarma.org/forumdisplay.php?f=19)

- - Can a 5BP4 be tested on a Sencore CR-7000? (http://www.videokarma.org/showthread.php?t=261711)

Jon F

05-27-2014 09:28 PM

Can a 5BP4 be tested on a Sencore CR-7000?

I have a 5BP4 with good filament, is there anyway to test this CRT beyond that? I have a Sencore CR-7000

Thanks!

Steve McVoy

05-28-2014 05:19 AM

My experience is that 5BP4s, like 7JP4s, can only be tested in a working set. 5BP4s were made with very different phosphors, and even with good emission, some produce relatively bright pictures, while others make terrible ones. RCA and Sylvania seem to be the best, while DuMont are the worst.

All times are GMT -5. The time now is 03:14 PM.