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(1) Tested Balanced Sylvania 12AZ7A Tube Black Plates Halo Date Code ib AAG

(1) Tested Balanced Sylvania 12AZ7A Tube Black Plates Halo Date Code ib AAG

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$18.95 USD
$18.95 USD
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(1) Tested Balanced Sylvania 12AZ7A Tube.
Date Code ib AAG.

Balanced mutual conductance (Gm) with smooth black plates and a top O ring halo getter.

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

Gm Test = 3500-3500 micromhos
Minimum pass/good = 2500-2500

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