Portishead Radio (callsign GKA) was a radio station in England that provided worldwide maritime communications and long-range aeronautical communications from 1928 until 2000. It was the world's largest and busiest long-distance HF maritime radio station. In 1974, the station employed 154 radio operators who handled over 20 million words per year. It was originally operated by the General Post Office (GPO), then the Post Office (1969–1981) and subsequently by British Telecom, which was privatised in 1984.