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(1) Tested Silvertone 8FQ7 Tube Silvertone Medium Mu Twin Triode Vacuum Tube

(1) Tested Silvertone 8FQ7 Tube Silvertone Medium Mu Twin Triode Vacuum Tube

Tested and Guaranteed

$6.95 USD
$6.95 USD
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(1) Tested Silvertone 8FQ7 Tube.

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

Gm Test = 2750-2500 micromhos
Minimum pass/good = 1650-1650

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