The antenna that receives and transmits signals to the Telstar communication satellite is the largest horn antenna ever built. The microwave antenna is 177 ft long, weighs 340 tons, and rolls on a circular track. A photo of the antenna is shown in Figure P5.9. The Telstar satellite is 34 inches in diameter and moves about 16,000 mph at an altitude of 2500 miles. The antenna must be positioned accurately to 1/10 of a degree, because the microwave beam is 0.2° wide and highly attenuated by the large distance. If the antenna is following the moving satellite, determine the Kv, necessary for the system.

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FIGURE 5.9 Amodel of the antenna for the Telstar System at Andover, Maine. (Photo courtesy of Bel Telephone Laboratories, Inc.)