The Vivian broadcast tower—which, at , became the second-tallest transmission tower in the Southern United States at that time—was activated on May 1, 1961. The transmitter allowed the station to extended its signal deeper into parts of northwestern Louisiana and northeastern Texas that previously could not receive the station either adequately or at all as well as increasing its city-grade coverage deeper into the Shreveport area and extending up to to the south of the city. On that date, the station's call letters were changed to KTAL-TV, which served as both a reference to channel 6's three-state service area—Texas, Arkansas, and Louisiana—and to its new transmission tower. (The station was also phonetically referred to as "K-Tal" "Kay-Tall" on an alternative basis until the mid-1970s.)