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Classic Currents

(1) Tested RCA Radiotron Cunningham Type 55 Tube Date Code V1 Engraved Base

(1) Tested RCA Radiotron Cunningham Type 55 Tube Date Code V1 Engraved Base

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(1) Tested RCA Radiotron Cunningham Type 55 Engraved Base Tube.
Date Code VI.

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

Gm Test = 1100 micromhos
Minimum pass/good = 610
Both diode sections test at 1250-1575 where 800-800 is minimum pass/good.

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