Quote:
Originally Posted by kvflyer
I think if the tube number ends in a 4 (excluding the "A"), it is BW for "four elements"...
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ending in P4 means phosphor number 4, a white-emitting phosphor, which is the fourth phosphor registered by the Joint Electronic Device Engineering Council (JEDEC) of the Radio Manufacturers Association (RMA), now the Electronic Industries Association (EIA).
All three-color tubes end in P22, which is the designation for a three-part screen with red, green, and blue phosphors.
So, yes, all the tubes mentioned are monochrome - but I still wanted to ask if there are any unmentioned color tubes.