KAGO signed on in 1923 on 1220 kHz as KFJI. In 1927 it moved to 1200 kHz. As a result of the 1928 reallocations it moved to 1370 kHz. It moved to 1210 kHz in 1932 then to 1240 kHz in 1941 as a result of the NARBA agreement. It moved to 1150 kHz in 1950.