(of reflector type antennas)

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• HRS type antennas — are more or less the standard antenna used for long distance high power shortwave broadcasting (> 1000 km). History of HRS design HRS antennas were discovered during the 1920s, and as such were not originally intended for voice and music… …   Wikipedia

• Corner reflector — Working principle of a corner reflector A corner reflector is a retroreflector consisting of three mutually perpendicular, intersecting flat surfaces, which reflects waves back directly towards the source, but shifted (translated). Unlike a… …   Wikipedia

• Cassegrain reflector — The Cassegrain reflector is a combination of two coaxial reflectors used in Cassegrain telescopes and radio antennas.First developed in 1672 by Laurent Cassegrain, this reflector is a combination of a primary concave mirror and a secondary convex …   Wikipedia

• Antena — Saltar a navegación, búsqueda Para otros usos de este término, véase Antena (desambiguación). Antena de onda corta Cortina , Moosbrunn, Austria …   Wikipedia Español

• HRS antenna — HRS type antennas are more or less the standard antenna used for long distance high power shortwave broadcasting (> 1000 km). Contents 1 History of HRS design 2 Nomenclature 3 A versatile antenna type …   Wikipedia

• Curtain (disambiguation) — Curtain is a piece of cloth intended to block or obscure light Contents 1 Materials 2 People politics 3 Music media …   Wikipedia

• GTRI Sensors and Electromagnetic Applications Laboratory — The Sensors and Electromagnetic Applications Laboratory (SEAL) is one of seven labs in the Georgia Tech Research Institute.OverviewSEAL researchers investigate radar systems, electromagnetic environmental effects, radar system performance… …   Wikipedia

• Rosario, Santa Fe — For other uses, see Rosario (disambiguation). Rosario   City of Rosario   Clockwise from top: the National Flag Memorial s tower and pro …   Wikipedia

• MIM-23 Hawk — PAR Pulse Acquisition Radar The pulse acquisition radar is a long range, high altitude search radar.* AN/MPQ 35 (Basic Hawk)The search radar used with the basic HAWK system, with a radar pulse power of 450 kW and a pulse length of 3 µs, a Pulse… …   Wikipedia

• List of radio propagation topics — This is a list of radio propagation terms. NOTOC A a index A index aa index active prominence active prominence region (APR) active region active surge region (ASR) active dark filament (ADF) AE index Air Force Geophysics Laboratory (AFGL) arch… …   Wikipedia

• Parabolic antenna — A parabolic satellite communications antenna at Erdfunkstelle Raisting, the biggest facility for satellite communication in the world, in Raisting, Bavaria, Germany. It has a Cassegrain type feed. A parabolic antenna is an antenna that uses a… …   Wikipedia