00000nam 2200000zi 4500 9.894428 CaOODSP 20221107173732 m o d f cr bn||||||||| 201207t19851986oncab ob f000 0 eng d 0662151186 (print) CaOODSP eng rda CaOODSP n-cn--- r------ x8x8 Co24-3/7-1391-1985E-PDF Co24-3/2-1391E Butler, R. S. (Richard Somerton), 1939- author. The Northwest Passage propagation experiment : report of the 1983-1984 measurement program / by R.S. Butler. Ottawa : Communications Research Centre, 1985. ©1986 1 online resource (42 pages) : illustrations, maps. text txt rdacontent computer c rdamedia online resource cr rdacarrier CRC report ; no. 1391 Issued also in French under title: L'expérience de propagation dans le passage du Nord-Ouest : rapport du programme de mesure 1983-1984. "Radar and Communications Technology Branch." "Ottawa, September 1985." Digitized edition from print [produced by Innovation, Science and Economic Development Canada]. Some pages rotated in this copy. Includes bibliographical references (page 20). "An experiment was undertaken in 1982 to study radio propagation conditions in the VHF and UHF bands in the Canadian Arctic Islands near latitude 75°N. There were five UHF paths having both ends elevated to study point-to-point relay links. At VHF there were nine paths from near sea level to sites at various elevations to study links from ship to shore. Path lengths were in the range 60 to 100 km and were representative of the paths needed for a maritime mobile communication system to cover the entire Northwest Passage. This report covers the measurements made between September 1983 and January 1985. Annual, seasonal, and worst-month statistics are presented and analyzed. It is concluded that reliable VHF communications can be provided to ships in the Northwest Passage using modest transmitter powers (less than 3 watts per 25 kHz voice channel), while very low transmitter powers (less than 0.1 watts per channel) would be adequate for UHF relay links between VHF sites"--Abstract, page 1. Issued also in print format. Radio wave propagation Northwest Passage Measurement. Shortwave radio Transmitters and transmission. Radio Installation on ships. Communications Research Centre (Canada), issuing body. L'expérience de propagation dans le passage du Nord-Ouest : (CaOODSP)9.894429 CRC report ; no. 1391. (CaOODSP)9.882492 PDF 1.30 MB https://publications.gc.ca/collections/collection_2020/isde-ised/Co24/Co24-3-7-1391-1985-eng.pdf