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Radio Tower Berlin
The Berliner Funkturm or Funkturm Berlin (Berlin Radio Tower) is a former broadcasting tower in Berlin, Germany. Constructed between 1924 and 1926 to designs by the architect Heinrich Straumer, it was inaugurated on 3 September 1926, on the occasion of the opening of the third Internationale Funkausstellung Berlin, Große Deutsche Funkausstellung (Great German Radio Exhibition) in the grounds of the Messe Berlin trade fair in the borough of Charlottenburg-Wilmersdorf. Nicknamed ''der lange Lulatsch'' ("the lanky lad"), the tower is one of the best-known Berlin#Tourist attractions, points of interest in the city of Berlin and, while no longer used for broadcasting purposes, it remains a protected monument. Construction method The tower is built as one large lattice tower, steel framework construction, similar to the Eiffel Tower in Paris. The and approximately 600-metric ton radio tower was originally planned strictly as a transmitting tower, but later additions included a re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radio Tower
Radio masts and towers are typically tall structures designed to support antennas for telecommunications and broadcasting, including television. There are two main types: guyed and self-supporting structures. They are among the tallest human-made structures. Masts are often named after the broadcasting organizations that originally built them or currently use them. A mast radiator or radiating tower is one in which the metal mast or tower itself is energized and functions as the transmitting antenna. Terminology The terms "mast" and "tower" are often used interchangeably. However, in structural engineering terms, a tower is a self-supporting or cantilevered structure, while a mast is held up by stays or guy-wires. ; A ''mast'': is a guyed mast, a thin structure without the shear strength to stand unsupported, that uses attached guy lines for stability. They may be mounted on the ground or on top of buildings. Typical ''masts'' are of steel lattice or tubular steel cons ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Porcelain
Porcelain (), also called china, is a ceramic material made by heating Industrial mineral, raw materials, generally including kaolinite, in a kiln to temperatures between . The greater strength and translucence of porcelain, relative to other types of pottery, arise mainly from Vitrification#Ceramics, vitrification and the formation of the mineral mullite within the body at these high temperatures. End applications include tableware, ceramic art, decorative ware such as figurines, and products in technology and industry such as Insulator (electricity), electrical insulators and laboratory ware. The manufacturing process used for porcelain is similar to that used for earthenware and stoneware, the two other main types of pottery, although it can be more challenging to produce. It has usually been regarded as the most prestigious type of pottery due to its delicacy, strength, and high degree of whiteness. It is frequently both glazed and decorated. Though definitions vary, po ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Berliner Fernsehturm
The Fernsehturm (; ) in central Berlin was constructed between 1965 and 1969 by the government of the German Democratic Republic as both a functional broadcasting facility and a symbol of Communist power. It remains a landmark today from its position next to Alexanderplatz in the city's Marien Quarter, part of the district of Mitte, visible across most suburban districts of Berlin. With a height of (including antenna) it is the tallest structure in Germany, and the third-tallest structure in the European Union. When built it was the fourth-tallest freestanding structure in the world after the Empire State Building and the John Hancock Center. Of the four tallest structures in the European Union, the Fernsehturm is shorter than the Torreta de Guardamar, shorter than the Riga Radio and TV Tower, and taller than the Trbovlje Power Station. The structure is also more than higher than the old Berlin Radio Tower in the western part of the city, which was built in the 1920s. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eiffel Tower Replicas And Derivatives
As one of the most iconic and recognizable structures in the world, the Eiffel Tower, completed in 1889, has been the inspiration for the creation of over 50 similar towers around the world. Most are not exact replicas, though there are many that resemble it closely, while others look slightly different. The Eiffel Tower has also inspired other towers that are not close resembling replicas and therefore are not listed here, for example the Blackpool Tower. Replicas of known height The tower is tall. Other Eiffel-inspired towers are listed in the table in descending order of scale and height, imperial measurements rounded to the nearest foot: Replicas of unknown height * Centerpiece of the Falconcity of Wonders - a planned new development project in Dubai, UAE, featuring seven modern wonders of the world (planned). (approximate coordinates) * Model in the First World Plaza shopping mall in Genting Highlands, Malaysia * Satteldorf near Crailsheim, Germany. On the top of a co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radio Mast Berlin-Scholzplatz
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 air ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
FM Radio
FM broadcasting is a method of radio broadcasting that uses frequency modulation (FM) of the radio broadcast carrier wave. Invented in 1933 by American engineer Edwin Armstrong, wide-band FM is used worldwide to transmit high fidelity, high-fidelity sound over broadcast radio. FM broadcasting offers higher fidelity—more accurate reproduction of the original program sound—than other broadcasting techniques, such as AM broadcasting. It is also less susceptible to Electromagnetic interference, common forms of interference, having less static and popping sounds than are often heard on AM. Therefore, FM is used for most broadcasts of music and general audio (in the audio spectrum). FM radio stations use the very high frequency range of radio frequency, radio frequencies. Broadcast bands Throughout the world, the FM broadcast band falls within the VHF part of the radio spectrum. Usually 87.5 to 108.0 MHz is used, or some portion of it, with few exceptions: * In the Commo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Superturnstile Antenna
A turnstile antenna, or crossed-dipole antenna, is a radio antenna consisting of a set of two identical dipole antennas mounted at right angles to each other and fed in phase quadrature; the two currents applied to the dipoles are 90° out of phase. filed: September 20, 1935; granted: July 13, 1937 The name reflects the notion the antenna looks like a turnstile when mounted horizontally. The antenna can be used in two possible modes. In ''normal mode'' the antenna radiates horizontally polarized radio waves perpendicular to its axis. In ''axial mode'' the antenna radiates circularly polarized radiation along its axis. Specialized normal mode turnstile antennas called ''superturnstile'' or ''batwing antennas'' are used as television broadcasting antennas. Axial mode turnstiles are widely used for satellite ground station antennas in the VHF and UHF bands, as circular polarization is often used for satellite communication since it is not sensitive to the orientation of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harz
The Harz (), also called the Harz Mountains, is a highland area in northern Germany. It has the highest elevations for that region, and its rugged terrain extends across parts of Lower Saxony, Saxony-Anhalt, and Thuringia. The name ''Harz'' derives from the Middle High German word ''Hardt'' or ''Hart'' (hill forest). The name ''Hercynia'' derives from a Celtic name and could refer to other mountain forests, but has also been applied to the geology of the Harz. The Brocken is the highest summit in the Harz with an elevation of above sea level. The Wurmberg () is the highest peak located entirely within the state of Lower Saxony. Geography Location and extent The Harz has a length of , stretching from the town of Seesen in the northwest to Eisleben in the east, and a width of . It occupies an area of , and is divided into the Upper Harz (''Oberharz'') in the northwest, which is up to 800 m high, apart from the 1,100 m high Brocken massif, and the Lower Harz (''Unterhar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Berlin-Tegel Radio Transmitter
The Transmitter Berlin-Tegel was a broadcasting facility for medium wave in Berlin-Tegel, Germany. It was built in 1933 and used as an aerial wire hung up in a tower of wood framework. In 1940, the height of the tower was reduced to 86 metres. On December 16, 1948 the tower (and a guyed mast under construction, intended to replace the tower) was bombed under orders of the French Commander (Jean Ganeval) at the time, because of concerns of endangering the air traffic of the nearby Berlin Tegel Airport, which was under construction at the time. The transmitters were moved to Königs Wusterhausen and installed there. Nevertheless, the transmitter building is still standing. See also * List of towers 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 ... References External links * * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
T-antenna
A ‘T’-antenna, ‘T’-aerial, or flat-top antenna is a monopole antenna, monopole antenna (radio), radio antenna consisting of one or more horizontal wires suspended between two supporting radio masts and towers, radio masts or buildings and insulated from them at the ends. A vertical wire is connected to the center of the horizontal wires and hangs down close to the ground, connected to the transmitter or radio receiver, receiver. The shape of the antenna resembles the letter "T", hence the name. The transmitter power is applied, or the radio receiver, receiver is connected, between the bottom of the vertical wire and a ground (electricity), ground connection. A closely related antenna is the inverted-L antenna. This is similar to the T-antenna except that the vertical feeder wire, instead of being attached to the center of the horizontal topload wires, is attached at one end. The name comes from its resemblance to an inverted letter "L" (Γ). The T-antenna is an omnidire ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
West Berlin Radio And Television Tower, 1977
West is one of the four cardinal directions or points of the compass. It is the opposite direction from east and is the direction in which the Sun sets on the Earth. Etymology The word "west" is a Germanic word passed into some Romance languages (''ouest'' in French, ''oest'' in Catalan, ''ovest'' in Italian, ''vest'' in Romanian, ''oeste'' in Spanish and Portuguese). As in other languages, the word formation stems from the fact that west is the direction of the setting sun in the evening: 'west' derives from the Indo-European root ''*wes'' reduced from ''*wes-pero'' 'evening, night', cognate with Ancient Greek ἕσπερος hesperos 'evening; evening star; western' and Latin vesper 'evening; west'. Examples of the same formation in other languages include Latin occidens 'west' from occidō 'to go down, to set' and Hebrew מַעֲרָב (maarav) 'west' from עֶרֶב (erev) 'evening'. West is sometimes abbreviated as W. Navigation To go west using a compass for navigatio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Police Radio
Police radio is a radio system used by police and other law enforcement agencies to communicate with one another. Police radio systems almost always use two-way radio systems to allow for communications between police officers and dispatchers. Most modern police radio systems are encrypted, and many jurisdictions have made listening to police radio frequencies as a private citizen illegal. History Before police radio systems were first implemented, police officers assigned to their beat could only communicate with police command using telephone booths, call boxes, police boxes, or physical meetings. Calling for help or signaling other officers could only be done by shouting, using a whistle, or hitting things to make sounds. This meant that properly calling for assistance, reporting an incident or arrest, being dispatched to handle a crime, or requesting police resources was only possible if the officer reached a telephone or call box. The first police radio systems we ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
