On April 15, 1974, "Earth Rock 102" made its debut. Drake-Chenault, owners of KXOA-FM (107.9 FM), attempted to sue KSFM because KXOA-FM had recently used the "Earth Rock" name on the air. As a result, in July 1974, KSFM was rebranded as "Earth Radio 102". Within six months of its debut, "KSFM Earth Radio 102" reached number six in the Sacramento ratings. When the station management only delivered a $25 monthly pay raise, much of the air staff left to run KSJO in San Jose, where they installed the Earth Rock format. Nonetheless, KSFM continued to obtain positive ratings.