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USE OF COMMERCIAL BROADCAST FACILITIES FOR EMERGENCY DOD COMMUNICATIONS

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  • Nick England
    1966 report - USE OF COMMERCIAL BROADCAST FACILITIES FOR EMERGENCY DOD COMMUNICATIONS http://www.dtic.mil/dtic/tr/fulltext/u2/800669.pdf This report contains
    Message 1 of 1 , Nov 17, 2012
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      1966 report - "USE OF COMMERCIAL BROADCAST FACILITIES FOR EMERGENCY
      DOD COMMUNICATIONS"

      http://www.dtic.mil/dtic/tr/fulltext/u2/800669.pdf

      This report contains details and results which were obtained during the
      design, installation and testing portion of a program, the intent of which
      kas to demonstrate the technical feasibility of providing emergency DCD teletype
      communications through the use of a distributed network of commercial AM
      broadcast stations. This was accomplished utilizing simplex operation with
      no degradation to the commercial programing material and by duplex operation
      with the insertion " a keyedaudio tone at 425 cycles. The latter introduced
      some annoyannc to the home listener. However, the degree of intelligibility,
      which • • primary consideration in an emergency, was not reduced.
      The system wae OpL-ated in a trace route mode and in a flood mode and was
      capable of being checked on a station-by-station basis by any user. The
      design and
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