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Classic Currents

(1) Tested 1957 Sylvania 32L7GT Tube Black Glass Date Code 7-13 32L7 GT Tube (a)

(1) Tested 1957 Sylvania 32L7GT Tube Black Glass Date Code 7-13 32L7 GT Tube (a)

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(1) Tested Sylvania 32L7GT 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 = 4500 micromhos
Minimum pass/good = 3000
The rectifier section tests very strong.

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