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(1) Tested GE 6BK7A Tube General Electric 6BK7 A Tube Medium Mu Twin Triode Tube

(1) Tested GE 6BK7A Tube General Electric 6BK7 A Tube Medium Mu Twin Triode Tube

Tested and Guaranteed

$8.95 USD
$8.95 USD
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(1) Tested Strong GE 6BK7A Tube.
The wording is partially worn away but still recognizable as being GE branded.

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

Gm Test = 9250-10,750 micromhos
Minimum pass/good = 5350-5350

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