In 1939 KFSD was slated to move from the U.S. Grant to a former country club east of downtown called "Emerald Hills". But the station did not move until 1948 due to the proximity of Emerald Hills to the Chollas Naval towers. In 1948, when KFSD moved to Emerald Hills, the facility was outfitted with the finest equipment available, primarily from RCA. Emerald Hills was built to completely house the KFSD studios, transmitter, and offices. From Emerald Hills, San Diego's first FM station signed on the air in 1948: KFSD-FM.