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(1) Tested Admiral 6CB6A Tube Date Code 61-30 GE EIA Pentode 6CB6 A Tube

(1) Tested Admiral 6CB6A Tube Date Code 61-30 GE EIA Pentode 6CB6 A Tube

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(1) Tested Admiral 6CB6A Tube.
Date Code 61-30.
The 188 EIA code indicates that this tube was made by GE for Admiral.

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

Gm Test = 3750 micromhos
Minimum pass/good = 3500

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