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Output pentode type 38

Jacob Roschy Martin Renz Ernst Erb Bernhard Nagel Eilert Menke 
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Forum » Valves / tubes - Semiconductors » VALVES/TUBES / SEMICONDUCTORS in RADIOMUSEUM » Output pentode type 38
John Dodgshun
John Dodgshun
NZ  Articles: 14
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05.Sep.21 09:13

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According to John Stokes, 70 years of Radio Tubes & Valves, the 38 was first introduced in July 1931.