Related Research Articles
Medium wave (MW) is a part of the medium frequency (MF) radio band used mainly for AM radio broadcasting. The spectrum provides about 120 channels with more limited sound quality than FM stations on the FM broadcast band. During the daytime, reception is usually limited to more local stations, though this is dependent on the signal conditions and quality of radio receiver used. Improved signal propagation at night allows the reception of much longer distance signals. This can cause increased interference because on most channels multiple transmitters operate simultaneously worldwide. In addition, amplitude modulation (AM) is often more prone to interference by various electronic devices, especially power supplies and computers. Strong transmitters cover larger areas than on the FM broadcast band but require more energy and longer antennas. Digital modes are possible but have not reached momentum yet.
Medium frequency (MF) is the ITU designation for radio frequencies (RF) in the range of 300 kilohertz (kHz) to 3 megahertz (MHz). Part of this band is the medium wave (MW) AM broadcast band. The MF band is also known as the hectometer band as the wavelengths range from ten to one hectometers. Frequencies immediately below MF are denoted as low frequency (LF), while the first band of higher frequencies is known as high frequency (HF). MF is mostly used for AM radio broadcasting, navigational radio beacons, maritime ship-to-shore communication, and transoceanic air traffic control.
The Gerbrandy Tower is a radio tower in IJsselstein, the Netherlands. It is also known as Lopik tower after the nearby town. It was built in 1961.
Zendstation Smilde, also known as the CJ2 Data tower is a 303 m (994 ft) partially guyed tower in Hoogersmilde, Netherlands. Built in 1959 for directional radio services and TV and FM-transmissions, it consists of an 80 m (260 ft) high reinforced concrete tower topped since 2012 by a 223 m (732 ft) television mast. It originally had a tubular 190 m (620 ft) analog TV - UHF antenna for a mast, removed in September 2007 and replaced by a similar 214 m (702 ft) UHF antenna for DVB-T, raising the tower's height to 294 m (965 ft). Destroyed by a fire on 15 July 2011, that mast was removed, and replaced in 2012 with the current steel lattice one.
A cell site, cell phone tower, cell base tower, or cellular base station is a cellular-enabled mobile device site where antennas and electronic communications equipment are placed to create a cell, or adjacent cells, in a cellular network. The raised structure typically supports antenna and one or more sets of transmitter/receivers transceivers, digital signal processors, control electronics, a GPS receiver for timing, primary and backup electrical power sources, and sheltering.
A guyed mast is a tall thin vertical structure that depends on guy lines for stability. The mast itself has the compressive strength to support its own weight, but does not have the shear strength to stand unsupported or bear loads. It requires guy lines to stay upright and to resist lateral (shear) forces such as wind loads. Examples include masts on sailing vessels, towers for telecommunications, meteorology, and masts on cranes, power shovels, draglines, and derricks, starting with the simple gin pole.
The Sender Inselsberg is an FM, DAB+ and television-transmission facility on the Großer Inselsberg in Thuringia, Germany. It has two aerial towers, which were built in 1939 and 1974.
The Königs Wusterhausen transmitter was a large transmission facility for longwave, mediumwave and shortwave radio, located near Königs Wusterhausen southeast of Berlin, Germany. Initially built by the telegraph battalion of the German Army, operation began during World War I in 1916. On 22 December 1920, the transmission of a Christmas concert marked the birth of public broadcasting in Germany.
The mediumwave transmitter Flevoland was a broadcasting facility for medium wave near Zeewolde in the province of Flevoland, Netherlands, situated at 5°25′ E and 52°23′ N. It has been used for broadcasting on 747 kHz and 1008 kHz with a nominal power of 400 kilowatts. As aerial two guyed steel framework masts with a height of 195 metres are used, which form an anti-fading aerial. These masts are grounded and carry a cage aerial, which is upperward the separation insulator, separating the masts in a height of 95 metres in two parts, connected toward the mast construction. The radiation diagram is directional, with a maximum gain of 4 dB in South-Eastern direction, to compensate for the variation in electrical admittance of terrain in the Netherlands.
The Arfon transmitting station is a facility for FM, DAB digital radio and television transmission near the villages of Nebo and Nasareth in Gwynedd, northwestern Wales. It includes a 308.5 m (1,012 ft) guyed mast with antennas attached at various heights. The mast is surmounted by a television transmitting antenna, which brings the total height of the structure to 317.4 m (1,041 ft), making it the tallest structure in Wales. It is owned and operated by Arqiva.
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 broadcast transmitter is an electronic device which radiates radio waves modulated with information content intended to be received by the general public. Examples are a radio broadcasting transmitter which transmits audio (sound) to broadcast radio receivers (radios) owned by the public, or a television transmitter, which transmits moving images (video) to television receivers (televisions). The term often includes the antenna which radiates the radio waves, and the building and facilities associated with the transmitter. A broadcasting station consists of a broadcast transmitter along with the production studio which originates the broadcasts. Broadcast transmitters must be licensed by governments, and are restricted to specific frequencies and power levels. Each transmitter is assigned a unique identifier consisting of a string of letters and numbers called a callsign, which must be used in all broadcasts.
Dillberg transmitter is a transmitting facility of the Bavarian Broadcasting Company on the 595-metre-high Dillberg mountain west of Neumarkt in der Oberpfalz, Bavaria, Germany. Dillberg transmitter went into service in 1955 for serving the area of Nuremberg with TV and FM radio programmes from a 198-metre-tall guyed mast.
Nauen Transmitter Station in Nauen, Havelland district, Brandenburg, Germany, is the oldest continuously operating radio transmitting installation in the world. Germany's first high power radio transmitter, it was founded on 1 April 1906 by Telefunken corporation and operated as a longwave radiotelegraphy station through World War II, and during World War I became Germany's main link with the outside world when its submarine communications cables were cut. Upgraded with shortwave transmitters in the 1920s it was Germany's most advanced long range radio station, continually upgraded with the latest equipment and serving as an experimental station for Telefunken to test new technology. At the end of World War II, invading Russian troops dismantled and removed the transmitting equipment. During the Cold War it served as the GDR's international shortwave station Radio Berlin International (RBI), and was the East Bloc's second most powerful radio station, disseminating Communist propaganda to other countries. Since German Reunification in 1991 it has been operated by Deutsche Telekom, Germany's state telecommunication service. The original 1920 transmitter building designed by architect Herman Muthesius is still used; it is one of the many remaining buildings designed by that architect that is a protected cultural heritage site.
Digitenne is the Dutch digital terrestrial television platform. It is owned by KPN. Digitenne uses the DVB-T2 standard. The national public television channels NPO 1, NPO 2, NPO 3 and the regional public television channels are free-to-air. For all other television channels a subscription is required.
The VRT Zendstation Egem is a 305 metres (1,001 ft) tall guyed mast used as a broadcast antenna. It broadcasts the radio and TV programs of the VRT and Q-Music, JOE fm, and Nostalgie Vlaanderen. There are also a number of antennas for mobile communications attached to the mast.
A transmitter station or transmission facility is an installation used for transmitting radio frequency signals for wireless communication, broadcasting, microwave link, mobile telephone or other purposes.
Alticom bv is a Dutch company that owns 30 transmission masts in the Netherlands. It operates as a market leading core communications infrastructure provider in the Netherlands. Alticom offers space on these masts for antennas as well as transmission equipment to operators of telecommunication networks and room within the constructions for the associated equipment and as colocation/data center/backhaul/connectivity.
The Emley Moor transmitting station is a telecommunications and broadcasting facility on Emley Moor, 1 mile (1.6 km) west of the village centre of Emley, in Huddersfield, West Yorkshire, England.
The Goes TV Tower is a broadcast tower near Goes, Netherlands.
References
- 1 2 3 4 Website NOVEC Key-figures (Dutch), visited 15 February, 2012
- ↑ Report Veilig werken op hoog nivo (save working at a high level),(Dutch) Chapter 2, published: 8 August 2007, Retrieved 15 February, 2012
- ↑ Website Novec: Producten en diensten (Products and services) (Dutch), visited 15 February 2012
- ↑ Novec website Tariff 2012 (Dutch), visited 15 February 2012
- ↑ The Largest Christmas Tree, visited 15 February 2012