FM Osaka (エフエム大阪) is an FM radio station in Osaka, Japan. The station is an affiliate of Japan FM Network (JFN). FM Osaka started broadcasting on April 1, 1970. It was the second commercial FM radio station to launch in Japan after FM Aichi. During its early years, FM Osaka transmitted from Mount Ikoma but later moved to Mount Iimori in June 1971, increasing its reception by 30%. FM Osaka's main studios are located at "Minatomachi River Place" in Minato, Naniwa, Osaka, in use since July 22, 2002. Its previous studios was at the Asahi Shimbun Osaka Headquarters building in Nakanoshima. It was one of the thirteen commercial radio stations that took part in the pilot project that would become Radiko in 2010.