Available online: https://www.meted.ucar.edu/training_module.php?id=1394Published by: The University Corporation for Atmospheric Research ; 2018
As a society we have become dependent on satellite communications, but satellites fail with alarming frequency. Before the advent of satellites, long distance communications were carried out with high frequency (HF) radio transmissions. This lesson examines the factors that control long-distance radio communications, with an emphasis on refraction in the ionosphere, frequency selection, and the effects of solar radiation.
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Format: Digital (Standard Copyright)
Tags: Radio wave ; Ionosphere ; Lesson/ Tutorial Add tag