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Old 08-13-2021, 11:37 AM
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AdamAnt316 AdamAnt316 is offline
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Join Date: Mar 2007
Location: MA
Posts: 140
Quote:
Originally Posted by Jon1967us View Post
Could it be a 5FP7?
That's what he meant. Older CRTs (almost?) always have 'P' as the last letter in the designation, followd by a number, to denote the type of phosphor used. A full list can be found here, but the ones most of us are likely to run across are as follows:

P1: Green, medium persistence (used in oscilloscopes, some green monochrome monitors)
P3: Orange, medium persistence (used in amber monochrome monitors, apparently)
P4: Bluish-white, medium persistence (used in black & white TVs)
P7: White/yellow, short/long persistence (used in old radar equipment)
P22: Red/green/blue, medium persistence (used in color TVs, of course)
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