Kyokuto Hoso Radio (極東放送) was a Japanese commercial radio station broadcasting to Okinawa Prefecture, founded in 1958 as a division of the Far East Broadcasting Company before switching to a secular commercial operation following the reversion of control of Okinawa to Japan, it was headquartered in Urasoe and had JOTF as its callsign.
At the beginning of the Japanese-language specialized station (KSDX), all of it was occupied by Christian-related programs due to the characteristics of religious broadcasting stations, but later PM ("Portable Missionary") plans promoted by FEBC Okinawa in the 1960s saw the dissemination of portable radios for KSDX's reception (1250kc fixed reception) free of charge in order to improve and enrich the faith and lives of poor families who did not have radios.
Taking advantage of this feature, it is said that long sound sources such as classical music and opera were played in full performance in the program.
Due to the close proximity to the U.S. military,[2] it was initially planned to abolish Japanese and English broadcasting at the same time as the reversion to the mainland.
A transmission facility was newly established on Jeju Island (Japanese programs are produced by the FEBC Japan branch in Tokyo).
From October 1973 until the abolition of medium wave broadcasting, time signal commercials were sponsored by the same FM stations in the four major cities (Tokyo, Aichi, Osaka, and Fukuoka).
On the other hand, due to the nature of the organization and the two premier commercial radio stations in Okinawa (RBC and ROK), the Local Private Broadcasting Joint Production Council (Tuesday Club), which consists of AM stations outside the Tokyo metropolitan area (Keihin area) and Osaka, it was consistently non-member until the abolition of medium wave broadcasting.