Magness's cable systems made money from individual subscribers in each town, while the microwave business made money relaying the signals of the Big Three networks to 21 broadcast stations, serving TCI's own cable systems at the same time. Traveling to some sites on horseback, Magness built a 130-mile microwave relay from Salt Lake City-unheard of in those days-making it possible for residents of the lonely outpost of Great Falls, Montana, to see their first live World Series game in 1961.16
