It is owned by Grupo Radiofónico ZER and airs a Regional Mexican format as La Ranchera.
Francisco Ernesto Ruiz, who would go on to become the Spanish radio play-by-play voice of the Houston Astros, was a disc jockey at XETM from 1972 to 1981.
[2] In 2000, XETM was sold to Arnoldo Rodríguez Zermeño, founder of Grupo Radiofónico ZER.
Zermeño moved the station to El Sifón (with studios in Agua Prieta), changed its callsign to XESOS-AM and increased its power to 50 kW daytime on 670 kHz.
In 2003, after the United States Federal Communications Commission complained about interference to other stations on 670, Mexico moved XESOS to 730 kHz at 300 watts of power.