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Classic Currents

(1) Tested 1957 Sylvania 7A7 Tube Code 726 Sylvania 7A7 Tube Loctal Pentode Tube

(1) Tested 1957 Sylvania 7A7 Tube Code 726 Sylvania 7A7 Tube Loctal Pentode Tube

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(1) Tested Sylvania 7A7 Tube.
Date Code 726 (26th week of 1957).

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

Gm Test = 1625 micromhos
Minimum pass/good = 1100

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