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Classic Currents

(1) Tested Commercial Trades Institute by Sylvania 6SQ7 GT Diode Triode 6SQ7GT

(1) Tested Commercial Trades Institute by Sylvania 6SQ7 GT Diode Triode 6SQ7GT

Made by Sylvania

$14.95 USD
$14.95 USD
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(1) Tested Strong Commercial Trades Institute 6SQ7GT Tube.
Date Code 939.
The 312 EIA code indicates that this tube was made by Sylvania.

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

Gm Test = 1500 micromhos
Minimum pass/good = 700
Both diode sections test at 1300 and 1525 where 800 is minimum pass/good.

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