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(1) Tested Admiral 6SN7GT Tube Black Plates Foil Getter Date Code 226 6SN7 GT

(1) Tested Admiral 6SN7GT Tube Black Plates Foil Getter Date Code 226 6SN7 GT

Made by Sylvania

$24.95 USD
$24.95 USD
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(1) Tested Admiral 6SN7GT Tube.
Date Code 226.
The 312 EIA code indicates that this was made by Sylvania for Admiral.

Black staggered plates and a bottom foil D getter.

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

Gm Test = 2875-3000 micromhos
Minimum pass/good = 1650-1650

Further tested under real operating conditions on an amplifier and presenting no microphonics.

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