Westinghouse K840CK15 Restoration

[etype2]

Originally Posted by trinescope

I looked at the screen on my set with a jeweler's loupe and noticed quite a few of the phosphor dots, especially the red ones, have irregular "holes" in them, probably from the manufacturing process. Sometimes it seems the whole 15GP22 production run was almost more like a prototype run instead.

RCA had 15GP22’s in pre-production as early as June, 1953 which they shared with other manufactures. The date codes on my 15GP22 indicate it was manufactured the 13th week of 1954. There was some indication that Westinghouse was manufacturing their own 15GP22’s. Any truth to this? Or were they just assembling the tubes on the line? I know that Westinghouse was working on a single gun color CRT about the same time, so they had the capability.