Comparative 100 Mc measurements at distances far beyond the radio horizon

Results of 100 Mc measurements are evaluated in terms of distributions of hourly medians of transmission loss. Transmitters were located at elevations of approximately 6200, 8800, and 14100 feet above mean sea level on the eastern slope of the Rocky Mountains. Receiving sites were located at distances of 230 and 400 miles from the transmitters. Various types of antennas were employed for transmitting and receiving. The results of studies of fading rate and fading range are reported for the 400 mile site by comparing signals received simultaneously on two different antennas. These results are compared to those expected from the application of the tropospheric scattering theory.