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Fernsehturm Heidelberg
The Fernsehturm Heidelberg is a transmission tower for FM and DVB-T on the Königstuhl hill of Heidelberg at . It was the property of the City of Heidelberg and sold to the SWR. Because of its exposed location on the crest of the hill the tower itself is only 82 meters high. The Heidelberg TV tower has an open-air observation deck 30 metres up its height, which can be reached by an elevator. The observation deck is now permanently closed for visitors due to safety concerns. The sale of the tower sealed the fate of the observation deck which used to enable tourist a spectacular 360 degrees view of the region. In the first years of its existence the tower was also used as a water tower. The water tank is located within the main body behind the observation deck. 11 digital TV channels on 3 multiplexes are broadcast from the TV tower. DVB-T Frequencies are channel 21 (474 MHz) for the ZDF transponder, 49 (698 MHz) and 60 (698 MHz) for the ARD/ SWR transponders. TV ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Multiplex (television)
A multiplex or mux (called virtual sub-channel in the United States and Canada, and bouquet in France) is a grouping of program services as interleaved data packets for broadcast over a network or modulated multiplexed medium. The program services are split out at the receiving end. In the United Kingdom, a terrestrial ''multiplex'' (usually abbreviated ''mux'') has a fixed bandwidth of 8 MHz CODFM of interleaved H.222 packets containing a number of ''channels''. In the United States, a similar arrangement using 6 MHz 8VSB is often described as a ''channel'' with ''virtual sub-channels''. Pay television multiplexes In regards to television, the term multiplex is often used to refer to a single broadcaster offering multiple channels of programming as a single bundle to its subscribers. The term is most synonymous with premium television services, such as those devoted to films (where the term evokes the symbolism of multiplex cinemas) or sports; for instance, film services may ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Communication Towers In Germany
Communication (from la, communicare, meaning "to share" or "to be in relation with") is usually defined as the transmission of information. The term may also refer to the message communicated through such transmissions or the field of inquiry studying them. There are many disagreements about its precise definition. John Peters argues that the difficulty of defining communication emerges from the fact that communication is both a universal phenomenon and a specific discipline of institutional academic study. One definitional strategy involves limiting what can be included in the category of communication (for example, requiring a "conscious intent" to persuade). By this logic, one possible definition of communication is the act of developing meaning among entities or groups through the use of sufficiently mutually understood signs, symbols, and semiotic conventions. An important distinction is between verbal communication, which happens through the use of a language, and n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Buildings And Structures In Heidelberg
A building, or edifice, is an enclosed structure with a roof and walls standing more or less permanently in one place, such as a house or factory (although there's also portable buildings). Buildings come in a variety of sizes, shapes, and functions, and have been adapted throughout history for a wide number of factors, from building materials available, to weather conditions, land prices, ground conditions, specific uses, prestige, and aesthetic reasons. To better understand the term ''building'' compare the list of nonbuilding structures. Buildings serve several societal needs – 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 division of the human habitat (a place of comfort and safety) and the ''outside'' (a place that at times may be harsh and harmful). Ever since the first cave paintings, buildings have also become objects or canvasses of much artist ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Towers
Several extant building fulfill the engineering definition of a tower: "a tall human structure, always taller than it is wide, for public or regular operational access by humans, but not for living in or office work, and are ''self-supporting'' or ''free-standing'', which means no guy-wires for support." This definition excludes continuously habitable buildings and skyscrapers as well as radio and TV masts. Also excluded because they are not designed for public or regular operational access are bridge towers or pylons, wind turbines, chimneys, transmission towers, sculptures and most large statues and obelisks. Towers are most often built to use their height for various purposes, and can stand alone or as part of a larger structure. Some common purposes are for telecommunications, and as a viewing platform. The Tokyo Skytree, completed in February 2012, is , making it the tallest tower, and third-tallest free-standing structure in the world. Entirely self-support ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Telecommunication Tower Of US-Forces Heidelberg
Telecommunication Tower of US-Forces Heidelberg is an 80 metre tall telecommunication tower of the US Army in Europe on the mountain Königsstuhl, which is part of the City of Heidelberg at . The Telecommunication Tower of US-Army in Europe is one of the few military communication towers built of reinforced concrete and it was built in the late 1950s. It replaced 3 steel beam structures built in the late 1940s. The Telecom Telecommunication Tower Heidelberg, the Fernsehturm Heidelberg (TV tower) and the Landessternwarte Heidelberg-Königstuhl (State owned Observatory) are all close by. The US Army Tower was used for microwave communications to other US Army sites all over southern Germany. The installation was closed in July 2007 and the installation and lot returned to the state of Baden-Württemberg. It used to be run by the US Army 43rd Signal Battalion before it was closed down. Its future use is unknown. It might be used for broadcasting several digital TV (DVB-T) transpon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Telecom Telecommunication Tower Heidelberg
Telecom Telecommunication Tower Heidelberg (german: Fernmeldeturm Heidelberg) is a 102 meter tall (originally 80m, raised to 102m in the 1980s) telecommunication tower built of reinforced concrete in the late 1950s on the mountain Königsstuhl near Heidelberg, Germany. Nearby are Fernsehturm Heidelberg and Telecommunication Tower of US-Forces Heidelberg. Like the other two towers, this structure has been converted from steel beams to reinforced concrete. Only three analog FM radio channels are currently transmitted. Its main use is microwave communications for Deutsche Telekom also known as T-COM (t-home/t-mobile). See also * List of towers Several extant building fulfill the engineering definition of a tower: "a tall human structure, always taller than it is wide, for public or regular operational access by humans, but not for living in or office work, and are ''self-supporting ... External links * http://skyscraperpage.com/diagrams/?b60552 Communication towers in Ge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Digital Audio Broadcasting
Digital radio is the use of digital technology to transmit or receive across the radio spectrum. Digital transmission by radio waves includes digital broadcasting, and especially digital audio radio services. Types In digital broadcasting systems, the analog audio signal is digital audio, digitized, Audio compression (data), compressed using an audio coding format such as AAC+ (MDCT) or MPEG-1 Audio Layer II, MP2, and transmitted using a digital modulation scheme. The aim is to increase the number of radio programs in a given spectrum, to improve the audio quality, to eliminate fading problems in mobile environments, to allow additional datacasting services, and to decrease the transmission power or the number of transmitters required to cover a region. However, analog radio (AM and FM) is still more popular and listening to radio over IP (Internet Protocol) is growing in popularity. In 2012 four digital wireless radio systems are recognized by the International Telecommunicati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Single-frequency Network
A single-frequency network or SFN is a broadcast network where several transmitters simultaneously send the same signal over the same frequency channel. Analog AM and FM radio broadcast networks as well as digital broadcast networks can operate in this manner. SFNs are not generally compatible with analog television transmission, since the SFN results in ghosting due to echoes of the same signal. A simplified form of SFN can be achieved by a low power co-channel repeater, booster or broadcast translator, which is utilized as a gap filler transmitter. The aim of SFNs is efficient utilization of the radio spectrum, allowing a higher number of radio and TV programs in comparison to traditional multi-frequency network (MFN) transmission. An SFN may also increase the coverage area and decrease the outage probability in comparison to an MFN, since the total received signal strength may increase to positions midway between the transmitters. SFN schemes are somewhat analogous to wha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ARD (broadcaster)
ARD is a joint organisation of Germany's regional public-service broadcasters. It was founded in 1950 in West Germany to represent the common interests of the new, decentralised, post-war broadcasting services – in particular the introduction of a joint television network. The ARD has a budget of €6.9 billion, 22,612 employees and is the largest public broadcaster network in the world. The budget comes primarily from a licence fee which every household, company and public institution are required by law to pay. For an ordinary household the fee is currently €18.36 per month. Households living on welfare are exempt from the fee. The fees are not collected directly by the ARD, but by the Beitragsservice (formerly known as Gebühreneinzugszentrale GEZ), a common organisation of the ARD member broadcasters, the second public TV broadcaster ZDF, and Deutschlandradio. ARD maintains and operates a national television network, called ''Das Erste'' ("The First") to differentia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transponder
In telecommunications, a transponder is a device that, upon receiving a signal, emits a different signal in response. The term is a blend of ''transmitter'' and ''responder''. In air navigation or radio frequency identification, a flight transponder is an automated transceiver in an aircraft that emits a coded identifying signal in response to an interrogating received signal. In a communications satellite, a satellite transponder receives signals over a range of uplink frequencies, usually from a satellite ground station; the transponder amplifies them, and re-transmits them on a different set of downlink frequencies to receivers on Earth, often without changing the content of the received signal or signals. Satellite/broadcast communications A communications satellite’s channels are called transponders because each is a separate transceiver or repeater. With digital video data compression and multiplexing, several video and audio channels may travel through a single trans ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Water Tower
A water tower is an elevated structure supporting a water tank constructed at a height sufficient to pressurize a distribution system for potable water, and to provide emergency storage for fire protection. Water towers often operate in conjunction with underground or surface service reservoirs, which store treated water close to where it will be used. Other types of water towers may only store raw (non-potable) water for fire protection or industrial purposes, and may not necessarily be connected to a public water supply. Water towers are able to supply water even during power outages, because they rely on hydrostatic pressure produced by elevation of water (due to gravity) to push the water into domestic and industrial water distribution systems; however, they cannot supply the water for a long time without power, because a pump is typically required to refill the tower. A water tower also serves as a reservoir to help with water needs during peak usage times. The water level ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
