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Classic Currents

(1) Tested 1952 Tung Sol 6F6GT Tube Code 218 Tung-Sol 6F6 GT Power Pentode Tube

(1) Tested 1952 Tung Sol 6F6GT Tube Code 218 Tung-Sol 6F6 GT Power Pentode Tube

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(1) Tested Tung-Sol 6F6GT Tube.
Date Code 218 (18th week of 1952).

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 = 1260

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