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Classic Currents

(1) Tested 1957 Sylvania 6B7 Tube Date Code 7-13 Double Diode Pentode Tube

(1) Tested 1957 Sylvania 6B7 Tube Date Code 7-13 Double Diode Pentode Tube

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(1) Tested Sylvania 6B7 Tube.
Date Code 7-13 (13th 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 = 1000 micromhos
Minimum pass/good = 630
The diode sections test at 1250-1275 where 800-800 is minimum pass/good.

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