1990. 1970s The Marine Broadcasting Offences Act officially outlawed offshore stations, but unlicensed radio continued, moving from ships and sea-based platforms to urban areas in the latter part of the 1960s (despite being already illegal under the Wireless Telegraphy Act 1949). During this period, home-made medium wave (and sometimes short wave) transmitters were often constructed inside cheap, expendable biscuit tins. The main method employed by most medium-wave or short-wave pirate stations during the 1970s involved programming played back on cassette recorders (often powered by a car battery), with a long wire antenna slung up between two trees. The 1970s and 1980s saw a wave of land-based pirate radio, broadcasting mostly in larger towns and cities, transmitting from flats and tower blocks. These included community-focused local stations as well as stations emerging for the first time to specialise in particular music genres. One of the earliest was Radio Jackie originally broadcasting in south west London. Soul music stations would start to appear in the 1970s. The first of these was Radio Invicta, regarded as Europe's first soul music station first broadcasting in 1970. The station would launch the careers of Pete Tong, Gilles Peterson and a number of the shows were presented by what was then known as the "Soul Mafia" - DJs such as Chris Hill and Froggy. 1980s Entering the 1980s, transmitters capable of FM broadcasting were beginning to be picked up reasonably cheaply, with the ability to transmit over a forty-mile radius from a 15-storey tower. Engineers such as Pyers Easton would build them for stations such as London Greek Radio and Kiss FM. In London, a notable moment would be the launching of Britain's first black owned music station Dread Broadcasting Corporation (DBC) in 1980. DBC played reggae and soca as well as other black music and would be instrumental to the later development of black community broadcasting as well as launching the career of BBC presenter Ranking Miss P. Soul stations would become prolific in the early-mid 1980s, with Invicta joined by Horizon Radio, and JFM in 1981. Both of these would broadcast until 1985 when they were followed by Solar Radio and Starpoint. London Weekend Radio (LWR) would start life in 1983 playing contemporary pop music during the day with more specialist shows in the evenings and weekends; however, having briefly closed down, management of the station was handed to club promoter Zak Dee and