The tube in the Cunningham data sheet clearly shows the type number C239. This would have to be an error as Cunningham tubes in the series C330 to C340 (and many others) show the type number as C3--. If any C239 tubes exist, they would be very rare.
Dimensioni (LxAxP) incl.pins/tip
x 118 x 38 mm / x 4.65 x 1.50 inch
Peso
36 g / 1.27 oz
Bibliografia
- - Manufacturers Literature
-- Collector info (Sammler)
C239: Cunningham Radio Tubes Manual C-10 1932
Daniel Consales
Just Qvigstad
C239: Cunningham Radio Tubes Manual C-10 1932
Daniel Consales
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