XEWA-AM and XHEWA-FM is a Mexican radio station that serves the San Luis Potosí area. It started broadcasting in the 1950s as a relay of XEW-AM 900 kHz in Mexico City, remaining so until the late 1980s when changes to the format occurred. Later the station became Ke Buena, broadcasting from San Luis Potosí to the entire Mexican Republic; by this point, it was the most powerful station in Mexico with 150 kW of power.