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Skelton Transmitting Station
The Skelton Transmitting Station is a radio transmitter site at near Skelton, Cumbria, England, about north-west of Penrith, Cumbria, Penrith, run by Babcock International and owned by the Ministry of Defence (United Kingdom), Ministry of Defence. Shortwave broadcasts from this station ended on 30 March 2023, replaced by Woofferton transmitting station, Woofferton. Skelton's lattice mast is the List of tallest structures in the United Kingdom, tallest structure in the UK. History Construction The site was built by J. L. Eve Construction during the Second World War, for long-distance short-wave transmissions, across Europe. Transmissions In 1946, the BBC was heralding the site as being "the World's largest and most powerful (shortwave) radio station". The main purpose of it was shortwave broadcasting. The site was capable of Digital Radio Mondiale (DRM) on at least 3955 kHz and 3975 kHz (75m broadcast band) beamed at 121° towards Germany and Central Europe. On Amp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Skelton Transmitting Station - Geograph
Skelton may refer to: Places United Kingdom * Skelton, Cumbria, England ** Skelton Transmitting Station, a radio transmitter and the tallest structure in the UK * Skelton, East Riding of Yorkshire, England * North Yorkshire, England ** Skelton, Richmondshire ** Skelton-on-Ure or Skelton, Harrogate ** Skelton, York ** Skelton-in-Cleveland or Skelton *** Skelton Castle United States * Skelton, Indiana * Skelton Township, Warrick County, Indiana * Skelton Township, Carlton County, Minnesota * Skelton, West Virginia Antarctica * Skelton Icefalls, Warren Range, Victoria Land * Skelton Glacier, Victoria Land * Skelton Inlet, Victoria Land, the terminus of the Skelton Glacier People * Skelton (surname), a list of people * Skelton Knaggs (1911–1955), English actor * Skelton Yorke, penname of British botanist Margaret Plues (1840–1903) Other uses * Lord of Skelton, a title of peerage in Plantagenet England for the Bruce Dynasty at Skelton, York * , a British sailing trade ship wrecke ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Very Low Frequency
Very low frequency or VLF is the ITU designation for radio frequencies (RF) in the range of 3–30 kHz, corresponding to wavelengths from 100 to 10 km, respectively. The band is also known as the myriameter band or myriameter wave as the wavelengths range from one to ten myriameters (an obsolete metric unit equal to 10 kilometers). Due to its limited bandwidth, audio (voice) transmission is highly impractical in this band, and therefore only low- data-rate coded signals are used. The VLF band is used for a few radio navigation services, government time radio stations (broadcasting time signals to set radio clocks) and secure military communication. Since VLF waves can penetrate at least into saltwater, they are used for military communication with submarines. Propagation characteristics Because of their long wavelengths, VLF radio waves can diffract around large obstacles and so are not blocked by mountain ranges, and they can propagate as ground wave ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Telecommunications In World War II
Telecommunication, often used in its plural form or abbreviated as telecom, is the transmission of information over a distance using electronic means, typically through cables, radio waves, or other communication technologies. These means of transmission may be divided into communication channels for multiplexing, allowing for a single medium to transmit several concurrent communication sessions. Long-distance technologies invented during the 20th and 21st centuries generally use electric power, and include the telegraph, telephone, television, and radio. Early telecommunication networks used metal wires as the medium for transmitting signals. These networks were used for telegraphy and telephony for many decades. In the first decade of the 20th century, a revolution in wireless communication began with breakthroughs including those made in radio communications by Guglielmo Marconi, who won the 1909 Nobel Prize in Physics. Other early pioneers in electrical and electroni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radio Masts And Towers In Europe
Radio is the technology of communicating using radio waves. Radio waves are electromagnetic waves of frequency between 3 hertz (Hz) and 300 gigahertz (GHz). They are generated by an electronic device called a transmitter connected to an antenna which radiates the waves. They can be received by other antennas connected to a radio receiver; this is the fundamental principle of radio communication. In addition to communication, radio is used for radar, radio navigation, remote control, remote sensing, and other applications. In radio communication, used in radio and television broadcasting, cell phones, two-way radios, wireless networking, and satellite communication, among numerous other uses, radio waves are used to carry information across space from a transmitter to a receiver, by modulating the radio signal (impressing an information signal on the radio wave by varying some aspect of the wave) in the transmitter. In radar, used to locate and track objects like ai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Buildings And Structures In Cumbria
A building or edifice is an enclosed Structure#Load-bearing, structure with a roof, walls and window, windows, usually standing permanently in one place, such as a house or factory. Buildings come in a variety of sizes, shapes, and functions, and have been adapted throughout history for numerous factors, from building materials available, to weather conditions, land prices, ground conditions, specific uses, monument, prestige, and aesthetic reasons. To better understand the concept, see ''Nonbuilding structure'' for contrast. Buildings serve several societal needs – occupancy, primarily as shelter from weather, security, living space, privacy, to store belongings, and to comfortably live and work. A building as a shelter represents a physical separation of the :Human habitats, human habitat (a place of comfort and safety) from the ''outside'' (a place that may be harsh and harmful at times). buildings have been objects or canvasses of much architecture, artistic expression. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of VLF-transmitters
A list of VLF-transmitters and LF-transmitters, which work or worked on frequencies below 100 kHz. List of VLF transmissions Demolished References {{Reflist Time signal radio stations Radio navigation Submarines Military radio systems Radio spectrum ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Radio Stations In The United Kingdom
This is a list of radio stations in the United Kingdom. National analogue and digital stations This list does not include stations which broadcast on numerous local digital multiplexes or MW licences to achieve near-national coverage. It also features stations broadcasting in the newer DAB+ Digital Radio standard'' DAB frequencies: *11A - radio stations operated under the Sound Digital multiplex *11D / 12A - radio stations operated under the Digital One multiplex (12A in Scotland and 11D in England, Wales and Northern Ireland) *12B - radio stations operated under the BBC National DAB multiplex DAB DAB+ Semi-national analogue and digital stations Stations which are available nationally on Freeview and satellite and / or broadcast on more than one local DAB multiplex: Local and regional analogue and digital stations BBC Local Radio Local radio stations from the BBC in England and the Channel Islands: BBC Nations Radio BBC radio stations from Scotland, Wales and No ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Tallest Buildings And Structures In Great Britain
This list contains all types of structures in height or more, which is the accepted criterion for a building to qualify as a skyscraper in the United Kingdom. Entries in ''italics'' denote approximate figures. indicates a structure that has been demolished or dismantled or is otherwise no longer standing. Structures taller than 300 metres Structures 250 to 300 metres tall Structures 200 to 250 metres tall Structures 150 to 200 metres tall Timeline of tallest structures Other notable tall structures A separate List of tallest buildings and structures in the United Kingdom by usage#Tallest structures, list also exists for the tallest of each architectural example or class. * Salisbury Cathedral at – tallest church spire in the United Kingdom * Joseph Chamberlain Memorial Clock Tower, Birmingham at – tallest free-standing clock tower in the world * Monument to the Great Fire of London, London at – tallest isolated stone column in the world * Arcelor ... [...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 History of the world's tallest structures, Tallest structures by category, and List of tallest buildings 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. Lists by height This list includes structures of all types over 350 meters (1148 feet). Plus it includes fr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tallest Structure In The UK
This list contains all types of structures in height or more, which is the accepted criterion for a building to qualify as a skyscraper in the United Kingdom. Entries in ''italics'' denote approximate figures. indicates a structure that has been demolished or dismantled or is otherwise no longer standing. Structures taller than 300 metres Structures 250 to 300 metres tall Structures 200 to 250 metres tall Structures 150 to 200 metres tall Timeline of tallest structures Other notable tall structures A separate List of tallest buildings and structures in the United Kingdom by usage#Tallest structures, list also exists for the tallest of each architectural example or class. * Salisbury Cathedral at – tallest church spire in the United Kingdom * Joseph Chamberlain Memorial Clock Tower, Birmingham at – tallest free-standing clock tower in the world * Monument to the Great Fire of London, London at – tallest isolated stone column in the world * Arcelor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SLBM
A submarine-launched ballistic missile (SLBM) is a ballistic missile capable of being launched from submarines. Modern variants usually deliver multiple independently targetable reentry vehicles (MIRVs), each of which carries a nuclear warhead and allows a single launched missile to strike several targets. Submarine-launched ballistic missiles operate in a different way from submarine-launched cruise missiles. Modern submarine-launched ballistic missiles are closely related to intercontinental ballistic missiles (ICBMs), with ranges of over , and in many cases SLBMs and ICBMs may be part of the same family of weapons. History Origins The first practical design of a submarine-based launch platform was developed by the Germans near the end of World War II involving a launch tube which contained a V-2 ballistic missile variant and was towed behind a submarine, known by the code-name ''Prüfstand XII''. The war ended before it could be tested, but the engineers who had worked o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Communication With Submarines
Communication with submarines is a field within military communications that presents technical challenges and requires specialized technology. Because radio waves do not travel well through good electrical conductors like salt water, submerged submarines are cut off from radio communication with their command authorities at ordinary radio frequencies. Submarines can surface and raise an antenna above the sea level, or float a tethered buoy carrying an antenna, then use ordinary radio transmissions; however, this makes them vulnerable to detection by anti-submarine warfare forces. Early submarines during World War II mostly travelled on the surface because of their limited underwater speed and endurance, and dived mainly to evade immediate threats or for stealthy approach to their targets. During the Cold War, however, nuclear-powered submarines were developed that could stay submerged for months. In the event of a nuclear war, submerged ballistic missile submarines have to be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
