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(1) Tested Sylvania 7F7 Tube Loctal Tube Double Triode Vacuum Tube

(1) Tested Sylvania 7F7 Tube Loctal Tube Double Triode Vacuum Tube

Tested and Guaranteed

$14.95 USD
$14.95 USD
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(1) Tested Sylvania 7F7 Tube.

The wording is slightly 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 = 1200-1125 micromhos
Minimum pass/good = 820-820

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