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Classic Currents

(1) Tested 1952 Sylvania 7H7 Tube with Box Date Code 226 Loctal Tube Loktal Tube

(1) Tested 1952 Sylvania 7H7 Tube with Box Date Code 226 Loctal Tube Loktal Tube

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$12.95 USD
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(1) Tested Sylvania 7H7 Tube with Original Box.
Date Code 226 (26th week of 1952).

The wording is partially worn but still very legible.

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

Gm Test = 3250 micromhos
Minimum pass/good = 2400

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