IMPROVEMENTS IN THE COASTAL HARBOR RADIO TELEPHONE SYSTEM AND THEIR EFFECT ON THE USER

This paper describes recent improvements in the coastal Harbor Radiotelephone System. The major improvement is a noise adaptive land-based receiver which can reliably detect an A3A carrier in a noise environment that varies from a typical low of 40 dB above thermal for quiet locations, to a typical high of 90 dB above thermal for noisy locations. In all cases, the receiver will only be included in the selection process if a usable audio signal is present during the initial ship transmission. New operating procedures are discussed which explain the interaction between the user and the noise adaptive receiver. A typical call sequence is described detailing the system operation during: a) the user's initial transmission when receiver selection occurs, and b) subsequent transmissions when only the selected receiver is on line.

  • Supplemental Notes:
    • Symposium Papers presented at RTCM Assembly Meeting April 17-20, 1978, Detroit, Michigan and Windsor, Canada. With the participation of International Association of Great Lakes Ports. Volume I, WARC 79 and Satellites and Advanced Systems.
  • Corporate Authors:

    Radio Technical Commission for Marine Services

    /Federal Communications Commission
    Washington, DC  USA  20554
  • Authors:
    • Chriss, W H
  • Publication Date: 1978

Media Info

  • Pagination: 10 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00184771
  • Record Type: Publication
  • Source Agency: Radio Technical Commission for Marine Services
  • Report/Paper Numbers: Paper No. 1.D
  • Files: TRIS
  • Created Date: Jan 13 1979 12:00AM