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      Technology

      Radio's New Kingdom

      Amateurs Now Talk on the Five-meter Waveband

      • By Orrin E. Dunlap on June 1, 1927
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      ABOUT THE AUTHOR(S)

        Recent Articles by Orrin E. Dunlap

        • New Power Tube Has Economical Filament, Reflectors are Efficient and more
        • Wanted--A Radio Fan's Paradise
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