00000nam 2200000zi 4500 9.894798 CaOODSP 20221107173838 m o d f cr bn||||||||| 201217s1980 oncab ob f000 0 eng d CaOODSP eng rda CaOODSP n-cn--- Co24-3/7-1340-1980E-PDF Loo, Chun, 1937- author. Subjective evaluation of FM/FM protection ratio for television broadcasting by satellite / by Chun Loo ; appendices A and F contributed by G. Chouinard and W.B. Tonner. Ottawa : Communications Research Centre, 1980. 1 online resource (iii, 77 pages) : illustrations. text txt rdacontent computer c rdamedia CRC report ; no. 1340 "December 1980." "Space Technology and Applications Branch." Digitized edition from print [produced by Innovation, Science and Economic Development Canada]. Includes bibliographical references. "This report describes subjective measurements of the interference between two FM TV signals at the same carrier frequency and at different carrier frequencies. The results show that there is no masking of the interference due to additive Gaussian noise in the wanted channel as reported by others. Also, the results do not support the conclusion that an impairment grade of 4.5 on the CCIR scale is subjectively equivalent to just perceptible interference. Finally, a comparison of results of measurements of the protection ratio and its variation with frequency offset with those obtained by others shows reasonably good agreement"--Abstract, page 1. Television Picture quality Evaluation. Television Transmitters and transmission. Artificial satellites in telecommunication Canada. Télévision Qualité de l'image Évaluation. Télévision Émetteurs et transmission. Satellites artificiels dans les télécommunications Canada. Communications Research Centre (Canada), issuing body. CRC report ; no. 1340. (CaOODSP)9.882492 PDF 1.11 MB https://publications.gc.ca/collections/collection_2020/isde-ised/Co24/Co24-3-7-1340-1980-eng.pdf