Quote:
Originally Posted by miniman82
I completed a 17CP4 metal cone tube that is still holding vacuum today, which proved the basic operation of the equipment at the museum. That tube mistakenly had a gun with a 12v filament installed in it, we still don't know how that happened but at least the tube works.
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Maybe you should write the EIA (or successor of same) for the designation of this unique tube.
Looking at Frank's tube site, the last 17" CRT code was the 17EZP22*, so I guess you have the world's only 17FAP4.
*noting the real oddity of the 17QCP(n) series available with many different types of phosphor.