Harold A. Zahl

Aug 24, 1904 - Mar 11, 1973

Harold Adelbert Zahl was an American physicist who had a 35-year career with the U.S. Army Signal Corps Laboratories, where he served as the Director of Research at Fort Monmouth and made major contributions to radar development. He is perhaps most famous for inventing the GA-4 Transmitter-Receiver Tube and the VT-158, which became known as the Zahl tube.
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