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In Reply to: GE tube markings W and WA on JG5670 ??? posted by Tweaker456 on March 7, 2015 at 15:34:43:
"W" generally denotes a ruggedized version of the type and "A" (or B or C) denotes an improved version where "improved" can mean many things such as increased dissipation, controlled heater current and so on.
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Follow Ups
- RE: GE tube markings W and WA on JG5670 ??? - Steve O 20:58:53 03/07/15 (1)
- RE: GE tube markings W and WA on JG5670 ??? - Camrahnbay 08:14:15 03/09/15 (0)