Vol. 4, No. 5April 18, 2023August 15, 2023By Libby4 View Fullscreen On the Cover The “Liberty Valve” as once sold by the Radio Apparatus Co. of Pottstown, Pa In this issue Some Historic British Tubes Magnatron DC-112 Early German Radar Transmitting Technology TCA Board Meeting, Aug. 27 TCA Member Meeting, Aug. 27 “Forbidden” Tube Pins Bendix “Red Bank” Tubes
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