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(1) Tested Sylvania 4BQ7A Tube Date Code ig AAG 4BQ7 A Twin Triode Tube

(1) Tested Sylvania 4BQ7A Tube Date Code ig AAG 4BQ7 A Twin Triode Tube

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(1) Tested Sylvania 4BQ7A Tube.
Date Code ig AAG.

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

Gm Test = 5250-5500 micromhos
Minimum pass/good = 4000-4000

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