An NOS '49 Motorola 7VT2 TV - Videokarma.org TV - Video

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An NOS '49 Motorola 7VT2 TV

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#11

12-13-2019, 09:03 PM

EdKozk2

Tinker

Join Date: Mar 2014

Location: Elkhorn, WI

Posts: 542

The wikipedia covers some of the P4 formulations, with and without cadmium or beryllium.

https://en.wikipedia.org/wiki/Phosphor

The table pictured is from a copy of U.A Sanabria's Television Course book published in 1948. The listing for P4 phosphors should use a plus sign instead of a minus.
Ed

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