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(1) Tested Sylvania 6GM6 Tube Date Code JBZ-C Pentode Vacuum Tube

(1) Tested Sylvania 6GM6 Tube Date Code JBZ-C Pentode Vacuum Tube

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(1) Tested Sylvania 6GM6 Tube.
Date Code JBZ-C

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

Gm Test = 3000 micromhos
Minimum pass/good = 1900

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