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Clearstream was founded as "Cedel" (Centrale de Livraison de Valeurs Mobilières) in September 1970 by 66 of the world's major financial institutions as a clearing organisation whose objective was to minimise risk in the settlement of cross-border securities trading, particularly in the growing Eurobond market.
A beam waveguide antenna is a type of complicated Cassegrain antenna with a long radio wave path to allow the feed electronics to be located at ground level. It is used in very large steerable radio telescopes and satellite ground antennas, where the feed electronics are too complicated and bulky, or requires too much maintenance and alterations, to locate on the dish; for example those using ...
Often random wire antennas are also (inaccurately) referred to as long-wire antennas.There is no accepted minimum size, but actual long-wire antennas must be greater than at least a quarter-wavelength ( 1 / 4 λ) or perhaps greater than a half ( 1 / 2 λ) at the frequency the long wire antenna is used for, and even a half-wave may only be considered "long-ish" rather than "truly ...
Building at Rue de la Régence 4 in Brussels, former head office of Euroclear Seat of Euroclear Bank in Kraków, Poland. Euroclear acquired Sicovam (the French central securities depository or CSD) in 2001, Necigef (Nederlands Centraal Instituut voor Giraal Effectenverkeer), the Dutch and CRESTCo Ltd, the CSD for UK & Irish securities using the CREST application in 2002.
Outdoor antennas are more expensive and difficult to install but are necessary for adequate reception in fringe areas far from television stations; the most common types of these are the Yagi, [2] log periodic, [2] and (for UHF) the multi-bay reflective array antenna.
Counterpoises are typically used in antenna systems for radio transmitters where a good earth ground connection cannot be constructed.. Monopole antennas used at low frequencies, below 3 MHz, such as the mast radiator antennas used for AM broadcasting, require the radio transmitter to be electrically connected to the Earth under the antenna; this is called a ground (or earth).
A parabolic antenna is an antenna that uses a parabolic reflector, a curved surface with the cross-sectional shape of a parabola, to direct the radio waves. The most common form is shaped like a dish and is popularly called a dish antenna or parabolic dish. The main advantage of a parabolic antenna is that it has high directivity.
An indoor antenna is a type of radio or TV antenna placed indoors, as opposed to being mounted on the roof. They are usually considered a simple and cheap solution to receive transmissions. An indoor antenna is prone to picking up electrical noise, but digital broadcasts are resistant to this noise.