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(1) Tested GE 12A8GT Tube Date Code 717 General Electric 12A8 GT Pentagrid Tube

(1) Tested GE 12A8GT Tube Date Code 717 General Electric 12A8 GT Pentagrid Tube

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(1) Tested GE 12A8GT Tube.
Date Code 717.

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

Gm Test = 1350-350 micromhos
Minimum pass/good = 630-190

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