As New Jersey DOT converted the former Erie-Lackawanna suburban lines to high-voltage ac and undertook ac electrification of the North Jersey Coast route, it found that the new high-performance, chopper-equipped electric multiple unit cars rendered existing communication and signal lines unusable as the result of electromagnetic interference. While heavily-shielded cables could reduce the interference, it proved more economical to use a frequency-division multiplex single-sideband carrier system with shielded coaxial video cable. The entire electrified right-of-way now has this video cable installation capable of transmitting up to 60 4Hz over a basedband carrier well above the traction frequency and harmonic noise spectrum. Carrier terminals were distributed at 26 points in substation buildings and signal bungalows. Conventional video pair cable between transmission points and limited use of heavily shielded telephone distribution cables dramatically reduced communication system cost. The system is designed to have circuit integrity under failure conditions.

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  • Corporate Authors:

    Murphy-Richter Publishing Company

    20 North Wacker Driver
    Chicago, IL  United States  60606
  • Publication Date: 1984-8

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Filing Info

  • Accession Number: 00387923
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Aug 30 1984 12:00AM