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Classic Currents

(1) Tested 1957 Western Electric 408A Tube Black Plates Square Getter Code 5726

(1) Tested 1957 Western Electric 408A Tube Black Plates Square Getter Code 5726

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$18.95 USD
$18.95 USD
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(1) Tested 1957 Western Electric 408A Tube.

Date Code 5726 which places the production of this tube to April - June of 1957.

Black plates with a top square D getter.

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

Gm Test = 4625 micromhos
Minimum pass/good = 2480

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