These tests were carried out to test the use of direct printing onboard ships using voice-frequency techniques and VHF channels in the maritime mobile band. Specific tests were made to determine the reliability of direct printing equipment between ships in port and the shore and the interference from and to adjacent VHF channels. The tests revealed that the most simple way of direct printing without any error correcting system is insufficient. Recommendations are made to correct this. Interference with adjacent VHF channels was neglectable. Better frequency stability is required for direct printing than is required for regular radiotelephony service in VHF equipment. Recommendations are made to request channels for this service.

  • Supplemental Notes:
    • Presented at the April 24-26th 1972 New Orleans RTCM Assembly Meeting. Volume 1--Papers AA and A thru F--Marine Traffic Systems, Volume 2--Papers G thru L-Safe Ship Operations, Volume 3--Papers M thru Q-Maritime Satellite Systems, Volume 4--Papers R thru Z-Trends in Maritime Communications. Sold only as a complete four volume set, $10.00 per set.
  • Corporate Authors:

    Radio Technical Commission for Marine Services

    P.O. Box 19087
    Washington, DC  United States  20036
  • Authors:
    • Hylkema, H T
  • Publication Date: 1972-4

Media Info

  • Pagination: 17 p.
  • Serial:
    • Volume: 4

Subject/Index Terms

Filing Info

  • Accession Number: 00048086
  • Record Type: Publication
  • Source Agency: Radio Technical Commission for Marine Services
  • Files: TRIS
  • Created Date: Oct 31 1973 12:00AM