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(1) Tested GE 25EH5 Tube Date Code NK General Electric Power Pentode Vacuum Tube

(1) Tested GE 25EH5 Tube Date Code NK General Electric Power Pentode Vacuum Tube

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(1) Tested GE 25EH5 Tube.
Date Code NK.

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

Gm Test = 7875 micromhos
Minimum pass/good = 4500

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