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Classic Currents

(1) Tested GM (General Motors) 6R7G Tube Engraved Base Date Code 07

(1) Tested GM (General Motors) 6R7G Tube Engraved Base Date Code 07

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(1) Tested GM (General Motors) 6R7G Engraved Base Tube.
Date Code 07.

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

Gm Test = 2250 micromhos
Minimum pass/good = 1200
The diode sections test at 2100-3000 where 800-800 is minimum pass/good.

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