paragraph_text: The two systems were to run on a trial basis for six months; early television sets supported both resolutions. However, the Baird system, which used a mechanical camera for filmed programming and Farnsworth image dissector cameras for live programming, proved too cumbersome and visually inferior, and ended with closedown (at 22:00) on Saturday 13 February 1937.

paragraph_text: Socutera (the acronym stands for: Stichting ter bevordering van Sociale en Culturele doeleinden door Televisie en Radio; English: "Foundation for the promotion of Social and Cultural purposes on Television and Radio") is a special broadcaster on the Netherlands Public Broadcasting system, which is allowed to broadcast on radio and television because of their spiritual background. Article 2.42 of the Dutch media law (the "Mediawet") accommodates faith-based radio and television broadcasters which unlike regular public broadcasters (several of which are also faith-based) do not have to have a minimum number of members.

paragraph_text: The world's first commercial broadcast automation audio compression system was developed by Oscar Bonello, an engineering professor at the University of Buenos Aires. In 1983, using the psychoacoustic principle of the masking of critical bands first published in 1967, he started developing a practical application based on the recently developed IBM PC computer, and the broadcast automation system was launched in 1987 under the name Audicom. Twenty years later, almost all the radio stations in the world were using similar technology manufactured by a number of companies.

paragraph_text: After a series of test transmissions and special broadcasts that began in August, regular BBC television broadcasts officially resumed on 1 October 1936, from a converted wing of Alexandra Palace in London, which housed two studios, various scenery stores, make-up areas, dressing rooms, offices, and the transmitter itself, now broadcasting on the VHF band. BBC television initially used two systems, on alternate weeks: the 240-line Baird intermediate film system and the 405-line Marconi-EMI system, each making the BBC the world's first regular high-definition television service, broadcasting Monday to Saturday from 15:00 to 16:00 and 21:00 to 22:00.

paragraph_text: Melodifestivalen 1989 was the selection for the 29th song to represent Sweden at the Eurovision Song Contest. It was the 28th time that this system of picking a song had been used. 1,223 songs were submitted to SVT for the competition. The hostess, Yvonne Ryding, was the 1984 Miss Universe. The final was broadcast on SVT1 and was surprisingly not broadcast on radio. The show was watched by 5,328,000 people.

paragraph_text: Melodifestivalen 1962 (known as Eurovisionsschlagern, svensk final) was the selection for the fifth song to represent Sweden at the Eurovision Song Contest. It was the fourth time that this system of picking a song had been used. One singer performed the song with a large orchestra and one with a smaller orchestra. Seven songs were submitted to SVT for the competition, of which one was disqualified. The final was broadcast on Sveriges Radio TV but was not broadcast on radio. Inger Berggren performed "Sol och vår" at Eurovision.

paragraph_text: Vic Latino (born Victor J. Canales in Long Island, New York) is an American radio and television personality of Spanish descent. He is co-founder of JVC Broadcasting which owns radio stations on Long Island and in the state of Florida.

paragraph_text: Melodifestivalen 1979 was the selection for the 19th song to represent Sweden at the Eurovision Song Contest. It was the 18th time that this system of picking a song had been used. 452 songs were submitted to SVT for the competition. The final was broadcast on TV1 but was not broadcast on radio.

paragraph_text: Melodifestivalen 1986 was the selection for the 26th song to represent Sweden at the Eurovision Song Contest. It was the 25th time that this system of picking a song had been used. 90 songs were submitted to SVT for the competition. The final was broadcast on TV1 and was not broadcast on radio. No orchestra was used, and instead the ten songs were broadcast as music videos. The five songs that qualified for the second round were performed live to backing track.

paragraph_text: Melodifestivalen 2001 was the selection for the 41st song to represent Sweden at the Eurovision Song Contest. It was the 42nd time that this system of picking a song had been used. 1,567 songs were submitted to SVT for the competition. The final was broadcast on SVT1 and Sveriges Radio's P4 network.

paragraph_text: Melodifestivalen 1980 was the selection for the 20th song to represent Sweden at the Eurovision Song Contest. It was the 19th time that this system of picking a song had been used. 120 songs were submitted to SVT for the competition. The final was broadcast on TV1 but was not broadcast on radio.

paragraph_text: CKKQ-FM, known as 100.3 The Q or The Q, is a broadcast radio station in Victoria, British Columbia, Canada. CKKQ broadcasts online and at a frequency of 100.3 MHz on the FM band. The station has broadcast a mainstream rock format since its inception, but has a more classic rock sound since 2001, when sister station CKXM-AM/FM became The Zone @ 91.3 with the CJZN calls and an alternative rock format. It used to have an adult album alternative lean up until Pattison took over the station from OK Radio.

paragraph_text: Melodifestivalen 1975 was the selection for the 16th song to represent Sweden at the Eurovision Song Contest. It was the 15th time that this system of picking a song had been used. 10 songwriters were selected by SVT for the competition. The final was broadcast on TV1 but was not broadcast on radio.

paragraph_text: WXNX is a commercial radio station licensed to Sanibel, Florida, broadcasting to the Fort Myers/Naples area on 93.7 FM. WXNX airs an Active Rock and Alternative Rock hybrid radio format similar to Richmond, Virginia's now-defunct "Y-101" as a new rock alternative station, since it's a mixed format approach, the format label "Modern Rock" is an acceptable status

paragraph_text: Melodifestivalen 1982 was the selection for the 22nd song to represent Sweden at the Eurovision Song Contest. It was the 21st time that this system of picking a song had been used. 90 songs were submitted to SVT for the competition. The final was broadcast on TV1 but was not broadcast on radio.

paragraph_text: Melodifestivalen 1974 was the selection for the 15th song to represent Sweden at the Eurovision Song Contest. It was the 14th time that this system of picking a song had been used. 10 songwriters were selected by SR for the competition. The final was broadcast on TV1 but was not broadcast on radio. ABBA went on to win that year's Eurovision Song Contest in Brighton, Sweden's first Eurovision win.

paragraph_text: Melodifestivalen 1972 was the selection for the 13th song to represent Sweden at the Eurovision Song Contest. It was the 12th time that this system of picking a song had been used. Approximately 1000 songs were submitted to Sveriges Radio for the competition. The final was broadcast on TV1 but was not broadcast on radio.

paragraph_text: The PBA on KBS was a presentation of Philippine Basketball Association games on Kanlaon Broadcasting System (now the Radio Philippines Network), and was the first broadcaster of the PBA on television.

paragraph_text: 101.8 WCR FM - Wolverhampton Community Radio is a radio station that broadcasts to the city of Wolverhampton, England, on the VHF frequency of 101.8 under an Ofcom - Community Radio licence, from the centre of Wolverhampton. The station aims to be a vibrant and informative station that provides the City with an alternative service.

paragraph_text: In the early years of coverage the BBC had exclusive radio coverage with a picture of the pitch marked in the Radio Times with numbered squares to help the listener follow the match on the radio. The first FA Cup Final on Radio was in 1926 between Bolton Wanderers and Manchester City but this was only broadcast in Manchester, the first national final on BBC Radio was between Arsenal and Cardiff in 1927. The first final on BBC Television was in 1937 in a match which featured Sunderland and Preston North End but this was not televised in full. The following season's final between Preston and Huddersfield was covered in full by the BBC. When ITV was formed in 1955 they shared final coverage with the BBC in one of the only club matches shown live on television, during the 1970s and 1980s coverage became more elaborate with BBC and ITV trying to steal viewers from the others by starting coverage earlier and earlier some starting as early as 9 a.m. which was six hours before kick off. Nowadays, this continues with Setanta and ESPN having all-day broadcasts from Wembley, but terrestrial TV coverage usually begins two hours before kick off. The sharing of rights between BBC and ITV continued from 1955 to 1988, when ITV lost coverage to the new Sports Channel which later became Sky Sports.

Question: For how long did the radio match broadcaster alternate different broadcasting systems?
Answer: six months