Phase-Difference Variations in 9,350-Megacycle Radio Signals Arriving at Spaced Antennas

The phase difference between 9,350 megacycle-per-second radio signals received from a common transmitter at two horizontally spaced antennas was measured by the Electrical Engineering Research Laboratory of the University of Texas during March, 1955. The transmitter was located on Cheyenne Mountain in Colorado and the site of the receiver was at Fort Carson, 3.5 miles distant. The elevation angle of the transmitter as seen from the receivers was 9 degrees. This paper presents and discusses the results of these measurements.