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(1) Tested Dumont Emerson 6GM6 Tube Date Code 313 SemiRemote Cutoff Pentode Tube

(1) Tested Dumont Emerson 6GM6 Tube Date Code 313 SemiRemote Cutoff Pentode Tube

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(1) Tested Dumont-Emerson 6GM6 Tube.
Date Code 313.
The 312 EIA code indicates that this tube was made by Sylvania for Dumont-Emerson.

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

Gm Test = 2500 micromhos
Minimum pass/good = 1900

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