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Llanidloes Transmitting Station
The Llanidloes transmitting station is a broadcasting and telecommunications facility consisting of a self-supporting 23 m lattice mast erected on land that is itself about 245 m above sea level about 1 km to the west of the town of Llanidloes in Powys, Wales. It was originally built by the BBC, entering service just before Christmas 1966 transmitting the now-defunct 405-line VHF television system. Transmissions of the original three FM radio services began in February 1967. Currently, the transmitter provides DVB-T digital television to the area, along with FM radio. With only 2 W ERP, the television broadcasts only cover the town of Llanidloes to the east, the radio broadcasts reach somewhat further east along the Severn valley towards Llandinam. Specifications and history As built, the 405-line television and VHF FM radio services came (indirectly) from Wenvoe near Cardiff, and this site was therefore classed as a relay of Wenvoe. UHF television wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Long Mountain Transmitting Station
The Long Mountain transmitting station is sited on a ridge about east of Welshpool in Powys, Mid Wales and has been broadcasting UHF terrestrial TV and VHF FM radio services since the late 1970s. The site has a self-supporting 170' (52 metre) high lattice steel mast and was fed with an SHF link from Blaenplwyf via Llangurig. Despite not taking its signal off-air, it was originally classed as a 625-line UHF TV relay of Blaenplwyf. The transmitter originally radiated 1 kW providing TV and radio to an area including Newtown and Oswestry. Being only from the England/Wales border, coverage extended to several towns in England – Shrewsbury included. Long Mountain became re-classed as main transmitter in its own right (albeit a very low power one) with the advent of digital terrestrial TV from the site on 4 November 2009. In addition to this, it currently transmits FM radio and a single multiplex of DAB Digital radio. Services available Analogue television 17 Sep ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Super High Frequency
Super high frequency (SHF) is the ITU designation for radio frequencies (RF) in the range between 3 and 30 gigahertz (GHz). This band of frequencies is also known as the centimetre band or centimetre wave as the wavelengths range from one to ten centimetres. These frequencies fall within the microwave band, so radio waves with these frequencies are called microwaves. The small wavelength of microwaves allows them to be directed in narrow beams by aperture antennas such as parabolic dishes and horn antennas, so they are used for point-to-point communication and data links This article from the beginning of the microwave era predicted the future value of microwaves for point-to-point communication. and for radar. This frequency range is used for most radar transmitters, wireless LANs, satellite communication, microwave radio relay links, satellite phones (S band), and numerous short range terrestrial data links. They are also used for heating in industrial microwave heatin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Masts
The tallest structure in the world is the Burj Khalifa skyscraper at . Listed are guyed masts (such as telecommunication masts), self-supporting towers (such as the CN Tower), skyscrapers (such as the Willis Tower), oil platforms, electricity transmission towers, and bridge support towers. This list is organized by absolute height. See List of tallest buildings and structures, List of tallest freestanding structures and List of tallest buildings and List of tallest towers for additional information about these types of structures. Terminology Terminological and listing criteria follow Council on Tall Buildings and Urban Habitat definitions. Guyed masts are differentiated from towers – the latter not featuring any guy wires or other support structures; and buildings are differentiated from towers – the former having at least 50% of occupiable floor space although both are self-supporting structures. List by height This list includes structures with a minimum height of to k ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
BBC Radio 1
BBC Radio 1 is a British national radio station owned and operated by the BBC. It specialises in modern popular music and current chart hits throughout the day. The station provides alternative genres at night, including electronica, dance, hip hop and indie, while its sister station 1Xtra plays black contemporary music, including hip hop and R&B. Radio 1 also runs two online streams, Radio 1 Dance, dedicated to dance music, and Radio 1 Relax, dedicated to chill-out music; both are available to listen only on BBC Sounds. Radio 1 broadcasts throughout the UK on FM between and , digital radio, digital TV and BBC Sounds. It was launched in 1967 to meet the demand for music generated by pirate radio stations, when the average age of the UK population was 27. The BBC claims that it targets the 15–29 age group, and the average age of its UK audience since 2009 is 30. BBC Radio 1 started 24-hour broadcasting on 1 May 1991. According to RAJAR, the station broadcasts to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
BBC Radio Cymru
BBC Radio Cymru is a Welsh language radio network owned and operated by BBC Cymru Wales, a division of the BBC. It broadcasts on two stations across Wales on FM, DAB, digital TV and online. The main network broadcasts for hours a day from 5:30am to midnight with overnight programming simulcast from the BBC World Service after closedown. A second station, Radio Cymru 2, providing separate music and sports programming, broadcasts on digital and online platforms. Radio Cymru's managing editor is Dafydd Meredydd, a former presenter and producer for both stations. Overview BBC Radio Cymru began broadcasting on the morning of Monday 3 January 1977 – its first programme was an extended news bulletin presented at 6:45am by Gwyn Llewellyn and Geraint Jones. This was followed at 7am by the first edition of the breakfast magazine show ', presented by Hywel Gwynfryn with contributions from a network of local reporters in studios across Wales. The first record played on Radio Cymr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
BBC Radio 4
BBC Radio 4 is a British national radio station owned and operated by the BBC that replaced the BBC Home Service in 1967. It broadcasts a wide variety of spoken-word programmes, including news, drama, comedy, science and history from the BBC's headquarters at Broadcasting House, London. The station controller is Mohit Bakaya. Broadcasting throughout the United Kingdom, the Isle of Man and the Channel Islands on FM, LW and DAB, and on BBC Sounds, it can be received in the eastern counties of Ireland, northern France and Northern Europe. It is available on Freeview, Sky, and Virgin Media. Radio 4 currently reaches over 10 million listeners, making it the UK's second most-popular radio station after Radio 2. BBC Radio 4 broadcasts news programmes such as ''Today'' and ''The World at One'', heralded on air by the Greenwich Time Signal pips or the chimes of Big Ben. The pips are only accurate on FM, LW, and MW; there is a delay on digital radio of three to five seconds and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
BBC Radio 3
BBC Radio 3 is a British national radio station owned and operated by the BBC. It replaced the BBC Third Programme in 1967 and broadcasts classical music and opera, with jazz, world music, Radio drama, drama, High culture, culture and the arts also featuring. The station describes itself as "the world's most significant commissioner of new music", and through its BBC Radio 3 New Generation Artists scheme, New Generation Artists scheme promotes young musicians of all nationalities. The station broadcasts the The Proms, BBC Proms concerts, live and in full, each summer in addition to performances by the BBC Orchestras and Singers. There are regular productions of both classic plays and newly commissioned drama. Radio 3 won the Sony Radio Academy UK Station of the Year Gold Award for 2009 and was nominated again in 2011. According to RAJAR, the station broadcasts to a weekly audience of 1.7 million with a listening share of 1.3% as of September 2022. History Radio 3 is the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
BBC Radio 2
BBC Radio 2 is a British national radio station owned and operated by the BBC. It is the most popular station in the United Kingdom with over 15 million weekly listeners. Since launching in 1967, the station broadcasts a wide range of content. The Radio 2 about page says: "With a repertoire covering more than 40 years, Radio 2 plays the widest selection of music on the radio—from classic and mainstream pop to a specialist portfolio including classical, country, folk, jazz, soul, rock 'n' roll, gospel and blues." Radio 2 broadcasts throughout the UK on FM between and from studios in Wogan House, adjacent to Broadcasting House in central London. Programmes are broadcast on FM radio, digital radio via DAB, digital television and BBC Sounds. According to RAJAR, the station broadcasts to a weekly audience of 14.4 million with a listening share of 16.1% as of September 2022. History 1967–1986 The network was launched at 5:30am on Saturday 30 September 1967, replacing ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frequency Modulation
Frequency modulation (FM) is the encoding of information in a carrier wave by varying the instantaneous frequency of the wave. The technology is used in telecommunications, radio broadcasting, signal processing, and Run-length limited#FM: .280.2C1.29 RLL, computing. In Analog signal, analog frequency modulation, such as radio broadcasting, of an audio signal representing voice or music, the instantaneous frequency deviation, i.e. the difference between the frequency of the carrier and its center frequency, has a functional relation to the modulating signal amplitude. Digital data can be encoded and transmitted with a type of frequency modulation known as frequency-shift keying (FSK), in which the instantaneous frequency of the carrier is shifted among a set of frequencies. The frequencies may represent digits, such as '0' and '1'. FSK is widely used in computer modems, such as fax modems, telephone caller ID systems, garage door openers, and other low-frequency transmissions. R ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Digital 3&4
Digital 3&4 is a consortium consisting of ITV plc, STV Group plc and the Channel Four Television Corporation, which operates a multiplex broadcasting from a number of transmitter sites in the United Kingdom, carrying television and radio channels, together with interactive services, from both ITV and Channel 4. Unlike other multiplexes, the regional ITV broadcaster has control over which services are to be broadcast on their allotted amount of the capacity, leading to small regional differences across the country. Channels carried *ITV1 / STV *ITV1 +1 / STV +1 (except Channel Islands) *ITV2 *ITV3 *ITV4 *ITVBe (Channel Islands only, in the GB mainland it's on COM4) *Channel 4 * S4C (Wales only) *Channel 4 +1 *Film4 *More4 * E4 *E4 +1 * Channel 5 *Freeview Information page *Accessible TV Guide See also *List of digital terrestrial television channels (UK) This is a list of the current channels available on digital terrestrial television (DTT) in the United Kingdom, and thos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Digital Switchover
The digital television transition, also called the digital switchover (DSO), the analogue switch/sign-off (ASO), the digital migration, or the analogue shutdown, is the process in which older analogue television broadcasting technology is converted to and replaced by digital television. Conducted by individual nations on different schedules, this primarily involves the conversion of analogue terrestrial television broadcasting infrastructure to digital terrestrial (DTT), a major benefit being extra frequencies on the radio spectrum and lower broadcasting costs, as well as improved viewing qualities for consumers. The transition may also involve analogue cable conversion to digital cable or Internet Protocol television, as well as analog to digital satellite television. Transition of land based broadcasting was begun by some countries around 2000. By contrast, transition of satellite television systems was well underway or completed in many countries by this time. It is an i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
BBC Two Wales
BBC Two Wales is the national variation of BBC Two for BBC Cymru Wales. It is broadcast from BBC Cymru Wales New Broadcasting House, Central Square in Cardiff with live continuity provided by a team of announcer/directors. The channel opts out from the main BBC Two schedule. From 5 November 2001 until 2 January 2009, BBC Two Wales was the name of the analogue service broadcasting to Wales, and was the brand used on the digital service outside the broadcasting hours used by BBC 2W. BBC 2W was the sister channel to BBC Two Wales, until the Digital terrestrial television in the United Kingdom#Digital switchover, digital switchover saw the end of analogue broadcasts in Wales. The specific BBC 2W service was closed down and the BBC Two Wales brand used. Programming Programming is much the same as BBC Two, with the exception of some Welsh-oriented programming. Frequently, schedules are changed as a result of an additional programme being inserted and other programmes seen on the BBC ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
