XHRM was tentatively assigned in 1967 to José Luis Rivas Marentes, with the proposed frequency of 99.3 MHz. Rivas Marentes, doing business as Radio Moderna Mexicana, S.A., obtained the concession—now for 92.5 FM—on January 19, 1972; while other concessions had been issued earlier, XHRM is recognized as Baja California's first FM station. 92.5 FM debuted in February 1979 as San Diego's first Urban contemporary FM station, featuring soul, rap, and gospel music. Although owned by a Mexican company (as required by Mexican law), it was programmed by a U.S. company. At the time, it was the only San Diego station managed by blacks and programmed specifically for the black community.