VOICE COMMUNICATION IN THE TUBE

London Transport's small-bore tube tunnels represent a hostile environment in which to establish a speech link with moving trains. Deficiencies in the carrier wave system introduced on the Victoria line in 1968 led to experiments with multi-base stations and balanced leaky-feeder cables on the Bakerloo, but coaxial feeders with one-way repeaters are giving better results on the Northern line.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/03735346
• Corporate Authors:

  IPC Transport Press, Limited

  Dorset House, Stamford Street
  London SE1 9LU,   England 
• Authors:
  • Alexander, L M
• Publication Date: 1976-4

Media Info

• Pagination: p. 129-132
• Serial:
  • Railway Gazette International
  • Volume: 133
  • Issue Number: 4
  • Publisher: DVV Media Group
  • ISSN: 0373-5346
  • Serial URL: http://www.railwaygazette.com/about-us.html

Subject/Index Terms

• TRT Terms: Coaxial cables; Communication systems; Positive train control; Rail transit facilities; Railroads; Subways; Telecommunications
• Identifier Terms: London Transport
• Subject Areas: Railroads; Terminals and Facilities;

Filing Info

• Accession Number: 00139501
• Record Type: Publication
• Source Agency: British Railways
• Files: TRIS
• Created Date: Oct 26 1976 12:00AM