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Classic Currents

(1) Tested 1956 Tung-Sol 12AY7 Tube Code 613-3 Gray Plates Square D Halo Getter

(1) Tested 1956 Tung-Sol 12AY7 Tube Code 613-3 Gray Plates Square D Halo Getter

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$48.95 USD
$48.95 USD
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(1) Tested Tung-Sol 12AY7 Tube.
Date Code 613-3 (13th week of 1956).

Gray plates with an angled square D halo getter.

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

Gm Test = 1625-1750 micromhos
Minimum pass/good = 1100-1100

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