4RK, better known as ABC Capricornia is one of the ABC's original regional radio stations, predating the corporation's inception on 1 July 1932. 4RK, as it was known at the time, began broadcasting on 29 July 1931 and was owned by the Australian Broadcasting Company. The power was initially 2 kilowatts. The transmitting equipment was established by Keith Thow of STC. The station became part of the ABC in 1932, but retained its original callsign. The station was the second regional ABC radio station in Australia and celebrated its 75th birthday in 2006.