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(1) Tested Strong Sylvania 7H7 Tube Sylvania Loctal Tube Loktal Pentode Tube

(1) Tested Strong Sylvania 7H7 Tube Sylvania Loctal Tube Loktal Pentode Tube

Tested and Guaranteed

$9.95 USD
$9.95 USD
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(1) Tested Strong Sylvania 7H7 Tube.

The wording is partially worn off but still legible.

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

Gm Test = 4250 micromhos
Minimum pass/good = 2400

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