RADIATING CABLES FOR RITA. AN ASSESSMENT OF THE CHARACTERISTICS OF RADIATING CABLES AS A MEDIUM FOR TRANSMISSION OF RADIO MESSAGES TO RECEIVERS MOUNTED IN CARS TRAVELLING ON MAIN ROADS. FINAL REPORT - PART 1: SUMMARY REPORT

The report describes a TRRL programme of research carried out in conjunction with STL to evaluate leaky cables in a road environment. The project was designed to evaluate the suitability of using radiating cables as transmitting antennae to achieve radio communication with suitably equipped vehicles travelling within a 1 km long energised block. The TRRL investigated lf inductive loop techniques concentrating work at 105 mhz for European trials. The degree of control of the coverage area was found to be consistent with the need to conserve spectrum and also that longitudinally closely spaced message sections are possible employing a common carrier frequency. The coupling achievable with radiating cables would allow simple receivers to be used at power levels compatible with simple solid state techniques. The work showed the feasibility of a reliable vehicle communication system for RITA (Road Information Transmitted Aurally) by means of radiating cables. /TRRL/

  • Corporate Authors:

    Standard Telecommunication Laboratories, Limited

    London Road
    Harlow, Essex,   England 
  • Authors:
    • Johannessen, R
  • Publication Date: 1975-2

Media Info

  • Features: Figures; Tables;
  • Pagination: 29 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00193975
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Report/Paper Numbers: Monograph
  • Files: ITRD, TRIS
  • Created Date: Jun 13 1979 12:00AM