near-omnidirectional antenna

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• VHF omnidirectional range — This article is about the radio navigation aid. For other uses, see Vor. D VOR (Doppler VOR) ground station, co located with DME …   Wikipedia

• Loop antenna — A shortwave loop antenna A loop antenna is a radio antenna consisting of a loop (or loops) of wire, tubing, or other electrical conductor with its ends connected to a balanced transmission line. Within this physical description there are two very …   Wikipedia

• Dipole antenna — A schematic of a half wave dipole antenna connected to an unbalanced coaxial cable. Better practice is to connect the balanced dipole to the unbalanced line with a balun. A dipole antenna is a radio antenna that can be made of a simple wire, with …   Wikipedia

• Folded unipole antenna — The folded unipole antenna was first devised for broadcast use by the late John H. Mullaney, an American radio broadcast pioneer, and consulting engineer. Designed to solve some difficult problems with existing medium wave (MW) amplitude… …   Wikipedia

• Television antenna — A Winegard HD 7084P 68 element VHF/UHF aerial antenna A television antenna, or TV aerial, is an antenna specifically designed for the reception of over the air broadcast television signals, which are transmitted at frequencies from about 41 to… …   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

• слабонаправленная антенна — Антенна, излучающие свойства которой в любой момент времени практически одинаковы по всем направлениям. [Л.М. Невдяев. Телекоммуникационные технологии. Англо русский толковый словарь справочник. Под редакцией Ю.М. Горностаева. Москва, 2002]… …   Справочник технического переводчика

• Lunar Prospector — LunarOrbiter Name=Lunar Prospector Organization=NASA Contractors=Discovery Program MissionType=Planetary Science LaunchDate=January 7, 1998 at 02:28:44 UTC LaunchVehicle=Athena II MissionHighlight=Entered lunar orbit January 11, 1998, 10:28 UTC… …   Wikipedia