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Tested Matched Pair Amperex 34GD5 Tubes & Boxes Codes 70-26 Power Output Pentode

Tested Matched Pair Amperex 34GD5 Tubes & Boxes Codes 70-26 Power Output Pentode

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Tested Matched pair of Amperex 34GD5 Tubes with original Boxes.
Date Codes 70-26.
Tubes are closely matched for mutual conductance (Gm), date codes and internal structure - of which they are identical.

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

Gm Test = 5150 and 5000 micromhos
Minimum pass/good = 2850
Average NOS rating = 4200

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