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(1) Tested Crosley 12CU6 Tube Date Code 5509 CBS Hytron EIA Code Beam Power Tube

(1) Tested Crosley 12CU6 Tube Date Code 5509 CBS Hytron EIA Code Beam Power Tube

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(1) Tested Crosley 12CU6 Tube.
Date Code 5509.
The 210 EIA code indicates that this tube was made by CBS Hytron for Crosley.

THe wording on the base is slightly faded but still legible.

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


Gm Test = 4800 micromhos
Minimum pass/good = 2800

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