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Description
Heintz and Kaufman Type 255X Gammatron, an experimental 750 watt version of the tetrode triode, the only known example of this tube. Serial number 939. Filament voltage 12V, 15 A, plate voltage 4000v.
Type
image
Identifier
7209077B-07DE-482F-9BC5-659058941600 2003-1-207
Subject
Gammatrons Heintz and Kaufman Vacuum-tubes (LCSH) Heintz, Ralph M., Sr
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