Prolonged space-wave fadeouts in tropospheric propagation

This paper contains the r es ults of studies performed during the last several years on t he short-term variability of t ropospheric signals received over within-the-horizon paths in Colorado and California. Signal variations of the type observed over such paths have been t ermed "prolonged space-wavE' f adeo uts." They are analyzed as a function of carrier frequency, path characteristics, and meteorological parameters. The study also includes an evaluation of fadeouts observed over a path using a mountain peak as a diffracting knife-edge obstacle between transmitter and receiver.