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(1) Tested National Union Type 38 Tube Code 5213 Audio Output Pentode Tube (a)

(1) Tested National Union Type 38 Tube Code 5213 Audio Output Pentode Tube (a)

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$14.95 USD
$14.95 USD
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(1) Tested National Union Type 38 Tube.
Date Code 5213.

This tube tests as NOS.

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

Gm Test = 1150 micromhos
Minimum pass/good = 660
NOS Rating = 990

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