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.[1] In 1974, the station employed 154 radio operators who handled over 20 million words per year.[2] 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.