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Tested Matched Pair National Union Type 24A Tubes Engraved Bases Codes J

Tested Matched Pair National Union Type 24A Tubes Engraved Bases Codes J

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$32.95 USD
$32.95 USD
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Tested Matched Pair of National Union Type 24A Engraved Base Tubes.
Date Codes J.

Tubes are very closely matched for Gm testing (see below), date codes and internal structure - they are identical.

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

Gm Test = 1025 and 1000 micromhos
Minimum pass/good = 630

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