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(1) Tested Sylvania 6K7 Tube Date Code N2R Pentode Black Metal Vacuum Tube

(1) Tested Sylvania 6K7 Tube Date Code N2R Pentode Black Metal Vacuum Tube

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(1) Tested Sylvania 6K7 Tube.
Date Code N2R.

This tube tests as NOS.

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

Gm Test = 1425 micromhos
Minimum pass/good = 910
Average NOS = 1365

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