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All content was previously housed at tubecollectors.org.

  • A Few Writings of Lloyd Espenschied
    Long time collector, historian, and electrical engineer Lloyd Espenschied (1889-1986), lived through some very exciting years in wireless technology and his writings can still be viewed as important. The following are a few. Lloyd became a amateur radio operator in 1904 and during summer vacations worked for United Wireless Telegraph Company. He graduated in 1909…
  • Translation of the Robert Champeix Article
    To be added soon
  • Hedy Lamarr & Wireless
    Hedwig Eva Maria Kiesler was born in Austria in 1914 to Jewish parents Emil Kiesler and mother Gertrud. Emil was a wealthy bank director and inspired his daughter to become curious about the world around her, invention and improving the world. Her mother, Tuude, was a concert pianist and introduced Hedwig to piano, ballet, theatre,…
  • Old Time Tube Collections
    Just a small sample of pictures from old time tube collections. The above is an early picture of the Arthur Larson tube collection. Arthur was a patent lawyer but that is not to say all these examples were involved in patent litigation, but some may have. Authors scan from the former Tyne/Vanicek collection. Click all…
  • How the Vacuum Tube Works
    John Howard Morecroft, 1881-1934, was an electrical engineer professor at Columbia University and at the Pratt institute. He was also the expert scientist for the US Navy during WW1. and worked in the laboratory of M. I. Pupin in submarine detection for the Navy. He served as president of the IRE in 1924, wrote several…