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(1) Tested Balanced 1953 Sylvania 6SA7 Tube Date Code 352 Pentagrid Converter

(1) Tested Balanced 1953 Sylvania 6SA7 Tube Date Code 352 Pentagrid Converter

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(1) Tested Balanced Sylvania 6SA7 Tube.
Date Code 352 (52nd week of 1953).

Tested on a calibrated Hickok TV-10 military tube tester with no shorts and no leaks with the following results:

Gm Test = 750-750 micromhos
Minimum pass/good = 470-470

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