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Description
Eimac "Zahl" VT-158 transmitting quad triode with grid and plate "loop" circuit. No. 188 stamped on exterior of glass. Eimac, Heinz & Kaufman and Machlett all produced VT-158 tubes. According to Wikipedia, the VT-158, also known as the Zahl tube, was a vacuum tube invented by American physicist Harold A. Zahl in the 1930s and used during World War II and the Korean War. It allowed the radar technology at the time to detect low-flying planes by generating enough power to produce ultrahigh frequency energy.
Type
image
Identifier
EA0F39C7-DD13-41C2-81A1-158273249100 2003-1-797
Subject
Radar transmitters Triodes Vacuum-tubes Eitel-McCullough, Inc United States. Army. Signal Corps World War, 1939-1945 Korean War, 1950-1953 Nineteen forties Nineteen fifties Zahl, Harold A. (Harold Adelbert), 1904-1973
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