Vol. 4, No. 6April 18, 2023July 19, 2024By Libby62View FullscreenOn the Cover The Amperex 211G power TriodeIn this issueThe Condor Radio ValveOld-Time Data on Navy TubesThe Milkotron – Another DeForest Invention?More on the Tube Flash and HeatersCollector Profile: Bigger Than AverageThe Long-Ignored CompactronMrs. K’s Lost Tubes
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