• DocumentCode
    1177226
  • Title

    Photoradio Apparatus and Operating Technique Improvements

  • Author

    Callahan, J.L. ; Whitaker, J.N. ; Shore, Henry

  • Author_Institution
    RCA Communications, Inc., New York City
  • Volume
    23
  • Issue
    12
  • fYear
    1935
  • Firstpage
    1441
  • Lastpage
    1482
  • Abstract
    A brief review of photoradio inception and progress up to 1928 is included in the introductory part of the paper. Improvements to terminal equipment which make possible greater fidelity of half-tone transmission over long-distance radio circuits are described. Radio circuit distortion is discussed and compensation methods suggested. A mathematical analysis of the photoradio keying is appended.
  • Keywords
    Alternators; Amplitude modulation; Circuits; Cities and towns; Facsimile; Fasteners; Optical modulation; Photoelectricity; Radio control; Radio transmitters;
  • fLanguage
    English
  • Journal_Title
    Radio Engineers, Proceedings of the Institute of
  • Publisher
    ieee
  • ISSN
    0731-5996
  • Type

    jour

  • DOI
    10.1109/JRPROC.1935.227939
  • Filename
    1685817
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1177226