Introduction to Satellite Communication » Exercise - 143. First geostationary satellite in the world was launched in : (a) 1952 (b) 1965 (c) 1975 (d) 1980
Introduction to Satellite Communication » Exercise - 122. For satellite communication the frequency should ….. the critical frequency of ionosphere. (a) Equal to (b) Less than (c) More than (d) None of the above
Introduction to Satellite Communication » Exercise - 279. A carrier is amplitude modulated by two sine waves of different frequencies upto 40% and 60%. The resulting overall modulation index is : (a) 1 (b) 0.72 (c) 0.4 (d) 0.6