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(1) Tested GE 6J7 Tube Date Code 58-13 General Electric 6J7 Sharp Cutoff Pentode

(1) Tested GE 6J7 Tube Date Code 58-13 General Electric 6J7 Sharp Cutoff Pentode

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(1) Tested GE 6J7 Tube.
Date Code 58-13.

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

Test = 1200 micromhos
Minimum pass/good = 770

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