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(1) Tested Sylvania X155 6BZ8 Tube Date Code YHG Sylvania 6BZ8 Pentode Tube

(1) Tested Sylvania X155 6BZ8 Tube Date Code YHG Sylvania 6BZ8 Pentode Tube

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(1) Tested Sylvania X155 6BZ8 Tube.
Date Code YHG.

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

Gm Test = 6500-6250 micromhos
Minimum pass/good = 3800-3800

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