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Tested Matched Balanced Pair 1947 Western Electric JW 5847 Tubes Codes 713 & 752

Tested Matched Balanced Pair 1947 Western Electric JW 5847 Tubes Codes 713 & 752

Tested and Guaranteed

$54.95 USD
$54.95 USD
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Tested Matched and Balanced Pair of 1957 Western Electric JW 5847 Tubes (404A).
Date Codes 713 and 752 place the production of both to January - March of 1957 and October - December of 1957.

Tubes are matched for Gm testing (see below) and internal structure - they are identical.
Black plates with top square angled D getters.

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

Gm Test = 7250 and 7250 micromhos
Minimum pass/good = 4600

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