Satellite System Interference Tests at Andover, Maine

Because of the shortage of suitable frequencies, it appears that it will be necessary for satellite communication systems and ground microwave systems to operate in the same frequency band. To do this without excessive interference between them requires that stringent criteria be met. This paper presents the results of radio interference tests from two test transmitter sites into the Andover, Maine, earth station receiver for experimental satellite communications. Although these sites were only 23.5 miles and 55 miles from Andover, an analysis of the results indicated that they could be used as locations for ground microwave systems with few limitations.