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Classic Currents

(1) Tested RCA JAN CRC 12SF7 Tube Date Code H5E Mil Spec 12SF7 Cutoff Pentode

(1) Tested RCA JAN CRC 12SF7 Tube Date Code H5E Mil Spec 12SF7 Cutoff Pentode

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(1) Tested RCA JAN-CRC-12SF7 Tube.
Date Code H5E.

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

Gm Test = 2150 micromhos
Minimum pass/good = 1260
The diode section tests at 1325 where 800 is minimum pass/good.

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