James H. Rose's Los Banos Broadcasting Company, owner of KLBS 1330 AM, obtained the construction permit for 95.9 MHz in Los Banos, California on March 10, 1964. Several months later, Los Banos Broadcasting Company was sold to John R. McAdam and Edwin Cordeiro. The FM station did not sign on until 1967. In October 1979, new ownership filed to move the station to 104.7 MHz, which brought with it a class increase and a wider coverage area. KLBS-FM signed on the new frequency in the spring of 1980, retaining its progressive rock format; the station was known as "K-105" and had the slogan of "The Central Valley's Rock and Roll Alternative".
