At the CRT page Sphere often mentions flat face for 5xxx(F) tubes. In one case, 5UP1(F), the description explicitly states "Electrostatic CRT with flat face (F)".
Albert
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On Thu, Jun 4, 2020 at 08:44 PM, Michael W. Lynch wrote:
Greg wrote:
This particular scope uses a 5DEP1(F) CRT. I my search for a replacement I
learned that the are a few used CRTs available which also sport a (S) suffix
on their part number. The few data sheets that were found do not allude to
the >differences between the (F) and (S) suffix tubes. I am making a basic
assumption that this refers to the face of the tube being either flat or
spherical shape respectively
I think that I read somewhere that this indicates the write speed of the
phosphor. S for slow and F for fast. This may not be accurate.
--
Michael Lynch
Dardanelle, Arkansas
