"History - Preservation - Application"

 2012 - TCA's Fourteenth Year
When you join the TCA you automatically get the current year's back issues! If you have questions, please contact TCA's editor, Lud Sibley: tubelore@jeffnet.org.

Volume 14, Number 1 - February, 2012
  • The Electrad Diode
    History of the Diode as a trademark.
  • Manufacture of a High Frequency Transmitting Tube
    From Electrical Communication (International Telephone & Telegraph Corporation) Sept. 1951.
  • More on the 5918
    Notes on the thorated tungsten version of the 895.
  • Excess Emission
    Radio and Television Maintenance, Feb 1951.
    • Hytron
      History of the Hytron Corporation and their Hytronic Labs.
    • Hytron HY-Numbered Tubes
      A list of HY-Numbered Tubes.
    • Review: Lee de Forest - King of Radio, Television and film
      An insightful biography of Lee de Forest.
    • Electronic Tubes Help Win Battles
      Sylvania News, Aug. - Sept. 1944
    • 1999-2011 Subject and Author Indices
    On The Cover: University of Electro-Communications in Tokyo receives a LRS Relay tube and its AEG amplifier.
    Volume 14, Number 2 - April, 2012
    • Another Curve Tracer
      Hytron's ultra-modern curve tracer, Nov. 1947 Electronics.
    • The History of Eimac
      Jack McCullough's story of the founding of Eimac.
    • German FuG 25a "Erstling" IFF Transponder of WW II
      GEMA's 1941 IFF transponder
  • Weird Tube of the Month
    LB4 Burgess Radiovisor Bridge.
    • Review: Aidade do Eletron - Anos de Progresso na Electronica
      The Age of the Electron - 100 Years of Progress in Electronics.
    • Mercury: The New Asbestos
      The new frontier of litigation mining.
    • Chemical Highlights of Tube Manufacture
      Sylvania News, Feb - March 1944
    • A British Thomson-Houston Audion
      First radio valve made by Mr. R. C. Clinker of 1915.
    On The Cover: 30's Marconi Valves data booklet.