Successful Rebuilt of a 15GP22 at ETF

[jr_tech]

Originally Posted by colorfixer

I for one am optimistic that with the frit application from RACS, the puzzle might be solved.

Something occurred to me: On the 15G' the red phosphor is much less efficient than that of the green and blue. This was corrected by driving the red gun harder to make up for the lesser light output of the original red. Since the red gun is being driven harder, it serves to reason that it would wear faster.

Since the gun is being redone as part of the rebuilding process, could the red gun be built heavier or with greater output relative to the other two, so that it lasts longer? Surely technology in electron gun construction has progressed over the last 60 odd years to allow for better lifespan and better emission. (ducking for cover)

Dispenser Cathode, perhaps?

http://www.semiconassociates.com/products/crt.aspx

jr