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Old 12-21-2020, 02:05 PM
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bigaudioal bigaudioal is offline
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Join Date: Mar 2012
Location: Gaithersburg, MD
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Yup, viewable phosphor coated screen diameter is around 17 1/2 inches. If it was a 16AP4 (as the socket is stamped) that area would be around 14 1/2 inches according to the tube data sheets for these CRTs. Crazy weird.

Quote:
Originally Posted by Kevin Kuehn View Post
If you measure the viewable area from the front and it's around 18" you'll know it's not a 16" tube.
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