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(1) Tested Zenith 6HS8 Tube Date Code 642 Sharp Cutoff Twin Pentode Tube

(1) Tested Zenith 6HS8 Tube Date Code 642 Sharp Cutoff Twin Pentode Tube

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(1) Tested Zenith 6HS8 Tube.
Date Code 642.
The 322 EIA code indicates that this tube was made by Tung-Sol for Zenith.

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

Gm Test = 550-650 micromhos
Minimum pass/good = 450-450

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