KSAH first signed on the air November 1, 1986. It was owned by Gandadores, Inc. and broadcast at 10,000 watts by day, 1,000 watts by night.[3] It aired a Regional Mexican music format.
In 2010, the AM station's Regional Mexican format started to be simulcast on 104.1 KSAH-FM. In June 2012, the music format moved exclusively to 104.1 FM and the AM station switched to Spanish-language sports talk, as an ESPN Deportes RadioNetwork affiliate. In 2018, the sports format was discontinued and the two stations returned to simulcasting their programming. The FM station's transmitter is located about 30 miles south of San Antonio in Atascosa County, Texas, in the community of Hindes.[4] Simulcasting helps listeners in other parts of the San Antonio market hear KSAH-FM's programming by tuning in AM 720.