On 2020-02-10 11:05 a.m., Nicholas Stock wrote:
Other tubes with P12 phosphor are 3JP12’s as far as I can tell. Some of the
datasheets for others say they were available as P12, but I rarely find them
for sale anywhere....
the description from JEDEC says P12 was intended for radar. see attched)
some REGISTERED at P12 include 5CP12,5AJP12,7LP12,16AFP12, 7AGP12,
3ACP12A, 19Wp12, 3BMP12, 17QCP12, 12AWP12, 5EKP12, 19DXP12.
the larger sizes are consistent with Radar use.
Sylvania or Dumont in Particular advertised that they would build ANY
CRT with any available phosphor given a suitable sized order, so
presumably any scope tube could have existed as a P12 - (or P7) version.
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Charles MacDonald VA3CPY Stittsville Ontario
[email protected] Just Beyond the Fringe
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