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(1) Tested Zytron 6SQ7GT Tube with Box Date Code 708 6SQ7 GT Vacuum Tube

(1) Tested Zytron 6SQ7GT Tube with Box Date Code 708 6SQ7 GT Vacuum Tube

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(1) Tested Zytron 6SQ7GT Tube.
Date Code 708.

One panel of the box has dried sticker label remnants.

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

Gm Test = 1500 micromhos
Minimum pass/good = 700
Each diode section tests at 1400-1300 where 800 is minimum pass/good.

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