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Classic Currents

(1) Tested 1943 Sylvania 6U7G Tube Date Code Z3R Remote Cutoff Pentode Tube

(1) Tested 1943 Sylvania 6U7G Tube Date Code Z3R Remote Cutoff Pentode Tube

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(1) Tested Sylvania 6U7G Tube.
Date Code Z3R (January to March of 1943).

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

Gm Test = 1650 micromhos
Minimum pass/good = 1000

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