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GWN Television
GWN7 was an Australian Television broadcasting in Australia, television network serving all of Western Australia outside metropolitan Perth. It launched on 10 March 1967 as ''BTW-3'' in Bunbury, Western Australia, Bunbury. It was an affiliate of the Seven Network and served one of the largest geographic television markets in the world—almost one-third of the continent. The network's name, ''GWN'', is an acronym of Golden West Network, the network's name from 1979 to when the current name was adopted in 2011. In 2021, GWN7's parent company Prime Media Group merged with Seven and the brand was retired in 2022. History Origins GWN began life as a group of smaller, independent stations: *10 March 1967: BTW–3 Bunbury, Western Australia, Bunbury **28 August 1968: GSW–9 Mount Barker, Western Australia, Mount Barker – relay **29 August 1974: GSW–10 Albany, Western Australia, Albany – relay *18 June 1971: VEW–8 Kalgoorlie **29 November 1971: VEW–3 Kambalda – relay ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
576i
576i is a standard-definition television, standard-definition digital video mode, originally used for digitizing analog television in most countries of the world where the utility frequency for electric power distribution is 50 Hz. Because of its close association with the legacy color encoding systems, it is often referred to as PAL, PAL/SECAM or SECAM when compared to its 60 Hz (typically, see PAL-M) NTSC-colour-encoded counterpart, 480i. The ''576'' identifies a vertical resolution of 576 lines, and the ''i'' identifies it as an Interlaced video, interlaced resolution. The field rate, which is 50 Hertz, Hz, is sometimes included when identifying the video mode, i.e. 576i50; another notation, endorsed by both the International Telecommunication Union in BT.601 and SMPTE in SMPTE 259M, includes the frame rate, as in 576i/25. Operation In analogue television, the full Raster scan, raster uses 625 lines, with 49 lines having no image content to allow time for cathode r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
