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001 | 9.894428 |
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003 | CaOODSP |
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005 | 20221107173732 |
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006 | m o d f |
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007 | cr bn||||||||| |
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008 | 201207t19851986oncab ob f000 0 eng d |
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020 | |z0662151186|q(print) |
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040 | |aCaOODSP|beng|erda|cCaOODSP |
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043 | |an-cn---|ar------ |
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045 | |ax8x8 |
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086 | 1 |aCo24-3/7-1391-1985E-PDF|zCo24-3/2-1391E |
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100 | 1 |aButler, R. S. |q(Richard Somerton), |d1939- |eauthor. |
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245 | 14|aThe Northwest Passage propagation experiment : |breport of the 1983-1984 measurement program / |cby R.S. Butler. |
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264 | 1|aOttawa : |bCommunications Research Centre, |c1985. |
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264 | 4|c©1986 |
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300 | |a1 online resource (42 pages) : |billustrations, maps. |
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336 | |atext|btxt|2rdacontent |
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337 | |acomputer|bc|2rdamedia |
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338 | |aonline resource|bcr|2rdacarrier |
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490 | 1 |aCRC report ; |vno. 1391 |
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500 | |aIssued also in French under title: L'expérience de propagation dans le passage du Nord-Ouest : rapport du programme de mesure 1983-1984. |
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500 | |a"Radar and Communications Technology Branch." |
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500 | |a"Ottawa, September 1985." |
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500 | |aDigitized edition from print [produced by Innovation, Science and Economic Development Canada]. |
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500 | |aSome pages rotated in this copy. |
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504 | |aIncludes bibliographical references (page 20). |
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520 | 3 |a"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. |
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530 | |aIssued also in print format. |
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650 | 0|aRadio wave propagation|zNorthwest Passage|xMeasurement. |
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650 | 0|aShortwave radio|xTransmitters and transmission. |
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650 | 0|aRadio|xInstallation on ships. |
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710 | 2 |aCommunications Research Centre (Canada), |eissuing body. |
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775 | 08|tL'expérience de propagation dans le passage du Nord-Ouest : |w(CaOODSP)9.894429 |
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830 | #0|aCRC report ;|vno. 1391.|w(CaOODSP)9.882492 |
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856 | 40|qPDF|s1.30 MB|uhttps://publications.gc.ca/collections/collection_2020/isde-ised/Co24/Co24-3-7-1391-1985-eng.pdf |
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