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Radio Kootwijk
Radio Kootwijk is a hamlet in the Netherlands, Dutch municipality of Apeldoorn. It is situated in a heather and forest rich territory in the Veluwe region, east of the sandhills of the Kootwijkerzand and the town of Kootwijk. Radio Kootwijk has a combined statistical listing with Hoog Soeren, the hamlet consists of about 37 houses. The village is known for its iconic radio transmitter. Radio transmitter The housing accommodations of Radio Kootwijk arose as a result of the building of a shortwave radio transmitter with the same name, starting in 1918. The transmitter played an important role in the 20th century as a communication facility between the Netherlands and its then colony of Dutch East Indies. In 1923 Dutch KPN, PTT started trans-oceanic telegraphy using a longwave transmitter (a 400 kW high frequency alternator) from the German Telefunken company under the callsign PCG, on 24 kHz and 48 kHz. By 1925 the longwave transmitter was changed by a shortwave tube based, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hamlet (place)
A hamlet is a human settlement that is smaller than a town or village. This is often simply an informal description of a smaller settlement or possibly a subdivision or satellite entity to a larger settlement. Sometimes a hamlet is defined for official or Administrative division, administrative purposes. The word and concept of a hamlet can be traced back to Anglo-Normans, Norman England, where the Old French came to apply to small human settlements. Etymology The word comes from Anglo-Norman language, Anglo-Norman ', corresponding to Old French ', the diminutive of Old French ' meaning a little village. This, in turn, is a diminutive of Old French ', possibly borrowed from (West Germanic languages, West Germanic) Franconian languages. It is related to the modern French ', Dutch language, Dutch ', Frisian languages, Frisian ', German ', Old English ', and Modern English ''home''. By country Afghanistan In Afghanistan, the counterpart of the hamlet is the Qila, qala ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transmitter
In electronics and telecommunications, a radio transmitter or just transmitter (often abbreviated as XMTR or TX in technical documents) is an electronic device which produces radio waves with an antenna (radio), antenna with the purpose of signal transmission to a radio receiver. The transmitter itself generates a radio frequency alternating current, which is applied to the Antenna (radio), antenna. When excited by this alternating current, the antenna Electromagnetic radiation, radiates radio waves. Transmitters are necessary component parts of all electronic devices that communicate by radio communication, radio, such as radio broadcasting, radio (audio) and television broadcasting stations, cell phones, walkie-talkies, Wireless LAN, wireless computer networks, Bluetooth enabled devices, garage door openers, two-way radios in aircraft, ships, spacecraft, radar sets and navigational beacons. The term ''transmitter'' is usually limited to equipment that generates radio waves fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mindhunters
''Mindhunters'' is a 2004 crime slasher film directed by Renny Harlin and starring Kathryn Morris, LL Cool J, Jonny Lee Miller, Patricia Velásquez, Clifton Collins Jr., Christian Slater, and Val Kilmer. It was written by Wayne Kramer and Kevin Brodbin with an uncredited rewrite by Ehren Kruger. Unusually, the last country to receive this film was the United States in 2005, because of the film's distribution rights being changed from 20th Century Fox to Dimension Films. In the film, a group of FBI profilers in training are tasked with tracking a serial killer to pass their exam. But they find themselves targeted by an actual killer. The team suspect that one of their members is their enemy, hiding among them. Plot Profiler Jake Harris is the instructor of the Mindhunters, a group of FBI agents training as profilers. His training approach consists of assigning them variants of real investigations, including sets, props, and actors, to play out each scenario. Alongside H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monument
A monument is a type of structure that was explicitly created to commemorate a person or event, or which has become relevant to a social group as a part of their remembrance of historic times or cultural heritage, due to its artistic, historical, political, technical or architectural importance. Examples of monuments include statues, (war) memorials, historical buildings, archaeological sites, and cultural assets. If there is a public interest in its preservation, a monument can for example be listed as a UNESCO World Heritage Site. The ''Palgrave Macmillan, Palgrave Encyclopedia of Cultural Heritage and Conflict'' gives the next definition of monument:Monuments result from social practices of construction or conservation of material artifacts through which the ideology of their promoters is manifested. The concept of the modern monument emerged with the development of capital and the nation-state in the fifteenth century when the ruling classes began to build and conserve what w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Julius Maria Luthmann
Julius may refer to: People * Julius (name), a masculine given name and surname (includes a list of people with the name) * Julius (nomen), the name of a Roman family (includes a list of Ancient Romans with the name) ** Julius Caesar (100–44 BC), Roman military and political leader and one of the most influential men of classical antiquity * Julius (judge royal) (fl. before 1135), noble in the Kingdom of Hungary * Julius, Count of Lippe-Biesterfeld (1812–1884), German noble * Julius, Duke of Brunswick-Lüneburg (1528–1589), German noble Arts and entertainment * Julius (''Everybody Hates Chris''), a character from the American sitcom * "Julius" (song), by Phish, 1994 Other uses * Julius (chimpanzee), a chimpanzee at Kristiansand Zoo and Amusement Park in Norway * Julius (month), the month of the ancient Roman calendar originally called ''Quintilis'' and renamed for Julius Caesar * Julius (restaurant), a tavern in Greenwich Village, New York City * Julius (software), a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Communications Satellite
A communications satellite is an artificial satellite that relays and amplifies radio telecommunication signals via a Transponder (satellite communications), transponder; it creates a communication channel between a source transmitter and a Radio receiver, receiver at different locations on Earth. Communications satellites are used for television, telephone, radio, internet, and military applications. Many communications satellites are in geostationary orbit above the equator, so that the satellite appears stationary at the same point in the sky; therefore the satellite dish antennas of ground stations can be aimed permanently at that spot and do not have to move to track the satellite. Others form satellite constellations in low Earth orbit, where antennas on the ground have to follow the position of the satellites and switch between satellites frequently. The radio waves used for telecommunications links travel by Line-of-sight propagation, line of sight and so are obstructe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nazi Germany
Nazi Germany, officially known as the German Reich and later the Greater German Reich, was the German Reich, German state between 1933 and 1945, when Adolf Hitler and the Nazi Party controlled the country, transforming it into a Totalitarianism, totalitarian dictatorship. The Third Reich, meaning "Third Realm" or "Third Empire", referred to the Nazi claim that Nazi Germany was the successor to the earlier Holy Roman Empire (800–1806) and German Empire (1871–1918). The Third Reich, which the Nazis referred to as the Thousand-Year Reich, ended in May 1945, after 12 years, when the Allies of World War II, Allies defeated Germany and entered the capital, Berlin, End of World War II in Europe, ending World War II in Europe. After Hitler was appointed Chancellor of Germany in 1933, the Nazi Party began to eliminate political opposition and consolidate power. A 1934 German referendum confirmed Hitler as sole ''Führer'' (leader). Power was centralised in Hitler's person, an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World War II
World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the world's countries participated, with many nations mobilising all resources in pursuit of total war. Tanks in World War II, Tanks and Air warfare of World War II, aircraft played major roles, enabling the strategic bombing of cities and delivery of the Atomic bombings of Hiroshima and Nagasaki, first and only nuclear weapons ever used in war. World War II is the List of wars by death toll, deadliest conflict in history, causing World War II casualties, the death of 70 to 85 million people, more than half of whom were civilians. Millions died in genocides, including the Holocaust, and by massacres, starvation, and disease. After the Allied victory, Allied-occupied Germany, Germany, Allied-occupied Austria, Austria, Occupation of Japan, Japan, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Telefunken
Telefunken was a German radio and television producer, founded in Berlin in 1903 as a joint venture between Siemens & Halske and the ''AEG (German company), Allgemeine Elektrizitäts-Gesellschaft'' (AEG) ("General electricity company"). Prior to World War I, the company set up the first world-wide network of communications and was the first in the world to sell electronic televisions with cathode-ray tubes, in Germany in 1934. The brand had several incarnations: * ''Gesellschaft für drahtlose Telegraphie Gesellschaft mit beschränkter Haftung, m.b.H., System Telefunken'', founded in 1903 as a joint venture between AEG and Siemens & Halske * ''Telefunken, Gesellschaft für drahtlose Telegraphie m.b.H.'', in 1923; since 1941 as subsidiary of AEG alone * ''Telefunken Gesellschaft mit beschränkter Haftung, GmbH'', in 1955 * ''Telefunken Aktiengesellschaft (AG)'', in 1963 * ''Allgemeine Elektrizitäts-Gesellschaft AEG-Telefunken'', created in 1967 through a merger between Telefunken ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
High Frequency Alternator
An Alexanderson alternator is a rotating machine, developed by Ernst Alexanderson beginning in 1904, for the generation of high-frequency alternating current for use as a radio transmitter. It was one of the first devices capable of generating the continuous radio waves needed for transmission of amplitude modulated (AM) signals by radio. It was used from about 1910 in a few "superpower" longwave radiotelegraphy stations to transmit transoceanic message traffic by Morse code to similar stations all over the world. Although superseded in the early 1920s by the development of vacuum-tube transmitters, the Alexanderson alternator continued to be used until World War II. It is on the list of IEEE Milestones as a key achievement in electrical engineering. History Prior developments After radio waves were discovered in 1887, the first generation of radio transmitters, the spark gap transmitters, produced strings of ''damped waves'', pulses of radio waves which died out to zero ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Longwave
In radio, longwave (also spelled long wave or long-wave and commonly abbreviated LW) is the part of the radio spectrum with wavelengths longer than what was originally called the medium-wave (MW) broadcasting band. The term is historic, dating from the early 20th century, when the radio spectrum was considered to consist of LW, MW, and short-wave (SW) radio bands. Most modern radio systems and devices use wavelengths which would then have been considered 'ultra-short' (i.e. VHF, UHF, and microwave). In contemporary usage, the term ''longwave'' is not defined precisely, and its intended meaning varies. It may be used for radio wavelengths longer than 1,000 m i.e. frequencies smaller than 300 kilohertz (kHz), including the International Telecommunication Union (ITU) low frequency (LF, 30–300 kHz) and very low frequency (VLF, 3–30 kHz) bands. Sometimes the upper limit is taken to be higher than 300 kHz, but not above the start of the medium wave ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
