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Nador Transmitter
Nador transmitter is the main transmission facility for longwave and shortwave of Medi 1 Radio, a privately owned broadcasting company of Morocco. It is situated approximately 18 kilometres south of the city of Nador and a few kilometres south of Selouane at 35°2'29"N and 2°55'7"W. The longwave transmitter of the Nador facility, which works on 171 kHz, had originally a transmission power of 2000 kilowatts. After 2009 the original equipment had been replaced by a new set of Thomson Broadcast S7HP solid-state transmitters with an output of 1600 kW. This modernization project incorporated a refurbishment of the three guyed masts, each 380 metres tall, thus the tallest structures in Africa after the demolition of the OMEGA Navigation System in Paynesville, Liberia in 2011. In addition the Nador facility is also equipped with two Thomson 250 kW shortwave transmitters. One of these transmitters carried the main program of Morocco's state broadcaster SNRT on varying ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radio Masts And Towers
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. In the case of a mast radiator or radiating tower, the whole mast or tower is itself 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 guys. Broadcast engineers in the UK use the same terminology. A mast is a ground-based or rooftop structure that supports antennas at a height where they can satisfactorily send or receive radio waves. Typical masts are of steel lattice or tubular steel construction. Masts themselves play no part in t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nador
Nador ( Riffian-Berber: ⵏⴰⴷⵓⵔ) is a coastal city and provincial capital in the northeastern Rif region of Morocco with a population of about 161,726 (2014 census). Nador city is separated from the Mediterranean Sea by a salt lagoon named ''Rbḥar Ameẓẓyan'' in Berber (''Mar Chica'' in Spanish) and is south of the Spanish city of Melilla. Nador was founded in the 19th century by local Berber tribes and was under Spanish occupation from 1912 until Morocco's independence in 1956. The Nador Province has over 600,000 inhabitants, predominantly of Rif- Berber ethnicity. Nador is considered the second largest city in the Oriental East after Wejda. Etymology The city name originated from the local Amazigh tribes of Has Nador, which was a small village near the Nador lagoon. Overview The economy of Nador and Nador province includes fishery, agriculture, some light and heavy industry. In the summer months of June to August thousands of people originating from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Morocco
Morocco (),, ) officially the Kingdom of Morocco, is the westernmost country in the Maghreb region of North Africa. It overlooks the Mediterranean Sea to the north and the Atlantic Ocean to the west, and has land borders with Algeria to the east, and the disputed territory of Western Sahara to the south. Mauritania lies to the south of Western Sahara. Morocco also claims the Spanish exclaves of Ceuta, Melilla and Peñón de Vélez de la Gomera, and several small Spanish-controlled islands off its coast. It spans an area of or , with a population of roughly 37 million. Its official and predominant religion is Islam, and the official languages are Arabic and Berber; the Moroccan dialect of Arabic and French are also widely spoken. Moroccan identity and culture is a mix of Arab, Berber, and European cultures. Its capital is Rabat, while its largest city is Casablanca. In a region inhabited since the Paleolithic Era over 300,000 years ago, the first Moroccan s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MEDI 1
Medi1 Radio ( ar, مدي 1, also known as Radio Méditerranée Internationale) is a private, commercial Moroccan radio network. Medi 1 has an audience of around 23 million people. It is emitted from Nador transmitter on 171 kHz longwave, and via internet and satellite. History and profile Medi 1 Radio is owned by various banks and private companies from both Morocco and France. The station started broadcasting in 1980 and is based in Tangier, Morocco. The radio station broadcasts throughout the Maghreb countries and it is a bilingual station broadcasting its programming in both Arabic and French. Medi 1 was managed by Pierre Casalta from its foundation until 2010. The station officially says it is politically independent, however, two former Medi 1 journalists, writing for L'Obs, described it as the "voice of the King", noting its subjective coverage of the monarchy. Its slogan is ''Medi 1, la radio du grand Maghreb''. See also * Medi1 TV * Communications in Morocco The fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Selouane
Selouane (Tarifit: Seřwan, ⵙⴻⵔⵡⴰⵏ; Arabic: سلوان) is a town in Nador Province, Oriental, Morocco Morocco (),, ) officially the Kingdom of Morocco, is the westernmost country in the Maghreb region of North Africa. It overlooks the Mediterranean Sea to the north and the Atlantic Ocean to the west, and has land borders with Algeria to .... According to the 2004 census, it has a population of 9,211. References Populated places in Nador Province {{OrientalMA-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Longwave Transmitter
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 transmitters, even ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kilowatt
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] |
Thomson Broadcast
Thomson Broadcast is a French electronics manufacturer which designs, produces, deploys and services television and medium-wave radio transmission systems. History Thomson Broadcast is a legacy of the former Thomson Group, which first transmitted television programs on July 10, 1937 from the Eiffel Tower. Thomson Group led to the creation of two companies in 1995: Thomson-CSF, specializing in defense and Thomson Multimedia (TMM), specializing in electronic consumer goods. Thomson Multimedia acquired the DVD manufacturer Technicolor and Grass Valley, a company focusing on cameras and video technology, in 2000 and 2001. This reinforced a strategy to produce and sell professional equipment (instead of consumer goods) which was fully implemented in 2005, when Thomson acquired Thales Broadcast & Multimedia. From 2000 to 2008, Thomson/Thales Broadcast & Multimedia reinforced its position in transmission deployment. In 2000, Thales Multimedia Multimedia introduced two one-megawatt long ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Guy-wire
A guy-wire, guy-line, guy-rope, or stay, also called simply a guy, is a tensioned cable designed to add stability to a free-standing structure. They are used commonly for ship masts, radio masts, wind turbines, utility poles, and tents. A thin vertical mast supported by guy wires is called a guyed mast. Structures that support antennas are frequently of a lattice construction and are called "towers". One end of the guy is attached to the structure, and the other is anchored to the ground at some distance from the mast or tower base. The tension in the diagonal guy-wire, combined with the compression and buckling strength of the structure, allows the structure to withstand lateral loads such as wind or the weight of cantilevered structures. They are installed radially, usually at equal angles about the structure, in trios and quads. As the tower leans a bit due to the wind force, the increased guy tension is resolved into a compression force in the tower or mast and a late ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
OMEGA Navigation System
OMEGA was the first global-range radio navigation system, operated by the United States in cooperation with six partner nations. It was a hyperbolic navigation system, enabling ships and aircraft to determine their position by receiving very low frequency (VLF) radio signals in the range 10 to 14 kHz, transmitted by a global network of eight fixed terrestrial radio beacons, using a navigation receiver unit. It became operational around 1971 and was shut down in 1997 in favour of the Global Positioning System. History Previous systems Taking a " fix" in any navigation system requires the determination of two measurements. Typically these are taken in relation to fixed objects like prominent landmarks or the known location of radio transmission towers. By measuring the angle to two such locations, the position of the navigator can be determined. Alternately, one can measure the angle and distance to a single object, or the distance to two objects. The introduction of radio s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paynesville, Liberia
Paynesville (sometimes Paynesward) is a suburb east of Monrovia, Liberia. It is geographically larger than the city of Monrovia and is expanding eastward along the Robertsfield Highway and northeastward beyond Red Light Market, one of the largest market areas in Liberia. Paynesville is often considered a part of the Greater Monrovia area. It was the location of the Paynesville Omega Transmitter, the highest structure of Africa, until the tower's demolition in 2011. The Liberia Broadcasting System is also located in Paynesville. The Liberian Judo Federation is based in Paynesville. Neighborhoods Paynesville has several neighborhoods, called "communities" by residents, which are notable for their unique names. Some communities include housing estates, older settlements, while others are named after landmarks, major boulevards/roads or local leaders, while others predate the street names altogether. * A.B. Tolbert Community * Duport Road *ELWA * Gobuychop * Grayja * Kendeja * Ken ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
