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(1) Tested Admiral 12AU7 Tube Code 5-27 Gray Plates Raytheon EIA Twin Triode

(1) Tested Admiral 12AU7 Tube Code 5-27 Gray Plates Raytheon EIA Twin Triode

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$14.95 USD
$14.95 USD
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(1) Tested Admiral 12AU7 Tube.
Date Code 5-27.
The 280 EIA code indicates that this tube was made by Raytheon for Admiral.

Grey plates with a square halo getter.

This tube tests above NOS specs.

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

Test Result = 2400-2625 micromhos
Minimum pass/good = 1400-1400
NOS Target Value = 2100-2100

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