Radio Television Hong Kong (RTHK) is the public broadcasting service in Hong Kong. GOW, the predecessor to RTHK, was established in 1928 as the first broadcasting service in Hong Kong. As a government department under the Commerce and Economic Development Bureau of the Hong Kong Government that directly supported by annual government funding, RTHK's educational, entertainment, and public affairs programmes are broadcast on its eight radio channels and four television channels, as well as commercial television channels. The British Hong Kong Government launched its first radio broadcasting station, known as "GOW", on 20 June 1928, with a starting staff of only six people. Several name changes occurred over the next few years, and it eventually became known as "Radio Hong Kong" (RHK) () in 1948. In 1949, broadcasting operations were taken over by the Government Information Services (GIS), but by 1954, RHK had managed to establish itself as an independent department. Up until 1966, the radio station was only on-air for three periods during the day; at morning, lunchtime, and evening. This was partly due to many of the presenters being part-time freelancers who had to fit their radio appearances in with their normal daily working schedule. In 1969, the station's medium wave AM transmitting station was moved from a waterfront site in Hung Hom to the summit of Golden Hill in the New Territories. Although the new transmitters were much more powerful, the mountain-top site proved unsuitable for medium wave transmissions and reception in some areas has remained problematic ever since. In March 1969, RHK moved its headquarters to new purpose-built studios located at Broadcasting House () in Kowloon Tong. A Public Affairs Television Unit was established in 1970 to produce TV programmes for required broadcast by independent channels. At that time, RTHK did not have its own television broadcast transmitters. In 1973, RTHK set up its own radio newsroom. Prior to this, all news had been prepared by Government Information Services staff.