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Classic Currents

Tested Matched Pair Raytheon 12GN7A 12HG7 Tubes with Boxes Made in Japan Code N4

Tested Matched Pair Raytheon 12GN7A 12HG7 Tubes with Boxes Made in Japan Code N4

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$22.95 USD
$22.95 USD
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Tested Matched Pair of Raytheon 12GN7A/12HG7 Tubes with Original Boxes.
 Date Codes N4. Made in Japan.

Tubes are closely matched for mutual conductance (Gm), date codes and internal structure - of which they are identical.
These tubes both test as NOS.

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

Gm Test = 15,500 and 14,500 micromhos
Minimum pass/good = 9500
Average NOS rating = 14,250

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