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Bod Transmitter
The Bod Transmitter (also known as the Brașov Transmitter) is the name of the transmitter facility for the central longwave radio station near Bod, Romania. The transmitter was designed by the engineer Gheorghe Cartianu-Popescu and built in 1933–34. At the time it was one of the tallest structures in Europe. The transmitter—the first longwave radio station in Eastern Europe—was inaugurated in the presence of Guglielmo Marconi Guglielmo Giovanni Maria Marconi, 1st Marquis of Marconi (; 25 April 187420 July 1937) was an Italians, Italian inventor and electrical engineering, electrical engineer, known for his creation of a practical radio wave-based Wireless telegrap .... The Bod Transmitter currently operates on a frequency of 153 kHz with an output power of 1,200 kW although this value mas not always used. During nighttime, power was lowered to half. During the 80's and 90's, probably to reduce costs, spare energy and parts and reduce wear out, its power var ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hertz
The hertz (symbol: Hz) is the unit of frequency in the International System of Units (SI), equivalent to one event (or cycle) per second. The hertz is an SI derived unit whose expression in terms of SI base units is s−1, meaning that one hertz is the reciprocal of one second. It is named after Heinrich Rudolf Hertz (1857–1894), the first person to provide conclusive proof of the existence of electromagnetic waves. Hertz are commonly expressed in multiples: kilohertz (kHz), megahertz (MHz), gigahertz (GHz), terahertz (THz). Some of the unit's most common uses are in the description of periodic waveforms and musical tones, particularly those used in radio- and audio-related applications. It is also used to describe the clock speeds at which computers and other electronics are driven. The units are sometimes also used as a representation of the energy of a photon, via the Planck relation ''E'' = ''hν'', where ''E'' is the photon's energy, ''ν'' is its frequency ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transmitter Sites In Romania
In electronics and telecommunications, a radio transmitter or just transmitter is an electronic device which produces radio waves with an antenna. The transmitter itself generates a radio frequency alternating current, which is applied to the antenna. When excited by this alternating current, the antenna radiates radio waves. Transmitters are necessary component parts of all electronic devices that communicate by radio, such as radio and television broadcasting stations, cell phones, walkie-talkies, 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 for communication purposes; or radiolocation, such as radar and navigational transmitters. Generators of radio waves for heating or industrial purposes, such as microwave ovens or diathermy equipment, are not usually called tra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Towers In Romania
A tower is a tall structure, taller than it is wide, often by a significant factor. Towers are distinguished from masts by their lack of guy-wires and are therefore, along with tall buildings, self-supporting structures. Towers are specifically distinguished from buildings in that they are built not to be habitable but to serve other functions using the height of the tower. For example, the height of a clock tower improves the visibility of the clock, and the height of a tower in a fortified building such as a castle increases the visibility of the surroundings for defensive purposes. Towers may also be built for observation, leisure, or telecommunication purposes. A tower can stand alone or be supported by adjacent buildings, or it may be a feature on top of a larger structure or building. Etymology Old English ''torr'' is from Latin ''turris'' via Old French ''tor''. The Latin term together with Greek τύρσις was loaned from a pre-Indo-European Mediterranean lan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radio In Romania
The mass media in Romania refers to mass media outlets based in Romania. Television, magazines, and newspapers are all operated by both state-owned and for-profit corporations which depend on advertising, subscription, and other sales-related revenues. The Constitution of Romania guarantees freedom of speech. As a country in transition, the Romanian media system is under transformation. Reporters Without Borders ranks Romania 42nd in its Worldwide Press Freedom Index, from 2013. Freedom House ranked it as "partly free" in 2014.Freedom House , Romania, 2014 History Romania's newspaper market thrived after the 1989 revolution, but many newspapers subsequently closed because of rising costs. Most households in Bucharest have cable TV. There are hundreds of cable distributors offering access to Romanian,[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Famous Transmission Sites
In the following there are lists of sites of notable radio transmitters. During the early history of radio many countries had only a few high power radio stations, operated either by the government or large corporations, which broadcast to the population or to other countries. Because of the large number of transmission sites, this list is not complete. Outside of Europe senders and repeater stations are emphatically presented from international services. Legend Europe Austria Belarus * Molodecno (VLF) Belgium * Schoten (FM, TV* Transmitter Wavre, Wavre (MW, SW shut down) FM DAB TV) *Overijse (MW closed) Bosnia and Herzegovina * Mostre transmitter (MW) Bulgaria *Kaliakra (MW) *Vakarel (LW, MW) Croatia *Grbre transmitter (MW) * Deanovec transmitter (MW, KW) Czech Republic * Liblice (LW closed 1.1.2021) * Liblice (MW closed) *Topolná (LW dismantled) * Mělník-Chloumek (MW closed) *Dobrochov (MW closed) * Jested (FM) Denmark * Kalundborg (LW, MW) Finland *Lahti (LW, S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Guyed Mast
A guyed mast or guyed tower is a tall thin vertical structure that depends on guy lines (diagonal tensioned cables attached to the ground) for stability. The mast itself has the compressive strength to support its own weight, but does not have the shear strength to stand unsupported. It requires guy lines to stay upright and to resist lateral forces such as wind loads. Guy lines are usually spaced at equal angles about the structure's base. Guyed masts are used for telecommunications, sailing, and meteorology. The tallest guyed mast in the world is currently the KVLY-TV mast near Blanchard, North Dakota, USA. Two subtypes exist. A ''partially guyed tower'' is a structure consisting of a guyed mast on top of a freestanding tower. The guys may be anchored to the top of the freestanding structure, or to the ground. A famous tower of this type is the Gerbrandy Tower. An ''additionally guyed tower'' is a freestanding tower which either has guys attached temporarily to add ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Watt
The watt (symbol: W) is the unit of power or radiant flux in the International System of Units (SI), equal to 1 joule per second or 1 kg⋅m2⋅s−3. It is used to quantify the rate of energy transfer. The watt is named after James Watt (1736–1819), an 18th-century Scottish inventor, mechanical engineer, and chemist who improved the Newcomen engine with his own steam engine in 1776. Watt's invention was fundamental for the Industrial Revolution. Overview When an object's velocity is held constant at one metre per second against a constant opposing force of one newton, the rate at which work is done is one watt. : \mathrm In terms of electromagnetism, one watt is the rate at which electrical work is performed when a current of one ampere (A) flows across an electrical potential difference of one volt (V), meaning the watt is equivalent to the volt-ampere (the latter unit, however, is used for a different quantity from the real power of an electrical circuit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radio Free Europe/Radio Liberty
Radio Free Europe/Radio Liberty (RFE/RL) is a United States government funded organization that broadcasts and reports news, information, and analysis to countries in Eastern Europe, Central Asia, Caucasus, and the Middle East where it says that "the free flow of information is either banned by government authorities or not fully developed". RFE/RL is a private, non-profit 501(c)(3) corporation supervised by the U.S. Agency for Global Media, an independent government agency overseeing all U.S. federal government international broadcasting services. Daisy Sindelar is the vice president and editor-in-chief of RFE. RFE/RL broadcasts in 27 languages to 23 countries. The organization has been headquartered in Prague, Czech Republic, since 1995, and has 21 local bureaus with over 500 core staff and 1,300 stringers and freelancers in countries throughout their broadcast region. In addition, it has 700 employees at its headquarters and corporate office in Washington, D.C. Radio Free E ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Guglielmo Marconi
Guglielmo Giovanni Maria Marconi, 1st Marquis of Marconi (; 25 April 187420 July 1937) was an Italian inventor and electrical engineer, known for his creation of a practical radio wave-based wireless telegraph system. This led to Marconi being credited as the inventor of radio, and he shared the 1909 Nobel Prize in Physics with Karl Ferdinand Braun "in recognition of their contributions to the development of wireless telegraphy".Guglielmo Marconi: The Nobel Prize in Physics 1909 . nobelprize.org Marconi was also an entrepreneur, businessman, and founder of The Wireless Telegraph & Signal Company in the |
Gheorghe Cartianu-Popescu
Gheorghe Cartianu-Popescu (8 August 1907–26 June 1982) was a Romanian engineer. He was born in Borca, Neamț County. After attending elementary school in his native commune and in Dobrovăț, Iași County, he went to high school in Bacău, graduating in 1926. Cartianu-Popescu then went to Politehnica University of Bucharest to study engineering, while also attending courses at the Faculty of Mathematics of the University of Bucharest. He received his engineering degree from Politehnica University in 1932, and in 1968 he obtained a Ph.D. degree in engineering from the same university. Cartianu-Popescu designed the Bod Transmitter, which was built in 1933–1934. He was elected a corresponding member of the Romanian Academy in 1963. at the Romanian Academy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
