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(1) Tested Very Strong RCA U.S.A.F. 6186 Tube Air Force Mil Spec Date Code 4-22

(1) Tested Very Strong RCA U.S.A.F. 6186 Tube Air Force Mil Spec Date Code 4-22

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(1) Tested Very Strong RCA U.S.A.F. (Air Force) 6186 Mil Spec Tube.
Date Code 4-22. 

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

Gm Test = 5000 micromhos
Minimum pass/good = 2500

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