00000nam 2200000zi 4500 9.872579 CaOODSP 20221107163701 m o d f cr ||||||||||| 190507e19510215onca #of f000 0 eng d CaOODSP eng rda CaOODSP n-cn--- DR50-1/1951E-PDF Meek, J. H., author. Ionospheric observer's instruction manual / J.H. Meek, C.A. McKerrow. Ottawa : Defence Research Telecommunications Establishment, Radio Physics Laborartory, 15 February 1951. 1 online resource (81 unnumbered pages) : illustrations text txt rdacontent computer c rdamedia online resource cr rdacarrier Digitized edition from print [produced by Innovation, Science and Economic Development Canada]. "A knowledge of the prevailing characteristics of the ionosphere is of considerable importance to all services using radio as a means of long distance communication. Since the characteristics of the ionosphere are by no means constant, regular radio measurements are made for the prediction of the characteristics and for purposes of study"--Introduction. gccst Telecommunications gccst Radio McKerrow, C. A., author. Canada. Defence Research Board. PDF 9.04 MB https://publications.gc.ca/collections/collection_2019/isde-ised/DR50-1-1951-eng.pdf