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Tested Matched Pair BRT Radio ECH81 Tubes (6AJ8 Tubes) with Boxes Codes YD1 7H

Tested Matched Pair BRT Radio ECH81 Tubes (6AJ8 Tubes) with Boxes Codes YD1 7H

Made in Germany

$42.95 USD
$42.95 USD
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Tested Matched Pair of BRT Radio ECH81 Tubes (6AJ8) with Original Boxes.
Date Code 2689 on one tube with very small etched date codes of YD1 7H on both near the bottom bases.
Made in Germany.

Tubes are matched for Gm testing (see below), etched 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 = 1400-2725 and 1450-2725 micromhos
Minimum pass/good = 800-1650

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