KSSE, KSSD, and KSSC are commercial FM radio stations serving Southern California at the 107.1 MHz frequency. KSSE is licensed to Arcadia, California and broadcasts to the Los Angeles metropolitan area. KSSD is licensed to Fallbrook, California and serves northern San Diego County. KSSC is licensed to Ventura, California and its signal covers Ventura County. The first two stations simulcast with KLYY in Riverside, airing a Spanish Adult Hits format known as "Viva 107.1". KSSC formerly aired a separate Spanish adult contemporary format branded as "La Suavecita 107.1". From 1991 to 2019, the three stations formed a same-channel trimulcast covering Southern California from Ventura to San Diego. As of December 31, 2019, KSSC in Ventura switched to José, reforming the trimulcast on 107.1.