single-reflector antenna
41Lobe switching — is a method used on early radar sets to improve tracking accuracy. It used two slightly separated antenna elements to send the beam slightly to either side of the midline of the antenna, switching between the two to find which one gave the… …
42Sirius Satellite Radio — Infobox Company company name = Sirius Satellite Radio company company type = Division of Sirius XM Radio company slogan = The Best Radio on Radio foundation = May 17, 1990 (as Satellite CD Radio, Inc.) location = New York City, New York, United… …
43James Webb Space Telescope — General information Organization NASA[1], with significant contributions from ESA and CSA …
44Ravensburg-Horgenzell transmitter — is a mediumwave broadcasting facility of Deutsche Telekom used for transmitting the program of Deutschlandfunk on the area of community Horgenzell nothwest of Ravensburg in Baden Württemberg. It was inaugurated on August 23, 1951 and used until… …
45Arecibo Observatory — a radio astronomy and ionospheric observatory near Arecibo, Puerto Rico: site of one of the world s largest single dish radio telescopes, 1000 ft. (305 m) in diameter. * * * Astronomical observatory near Arecibo, P.R., site of the world s largest …
46Light pollution — This article is about light pollution in the visible spectrum. For information on pollution in the radio spectrum, see radio spectrum pollution. This time exposure photo of New York City at night shows skyglow, one form of light pollution …
47Ford Crown Victoria — 1998 2002 Ford Crown Victoria LX Manufacturer Ford Motor Company Production 1955–1956 1991–2011 …
48Apollo Command/Service Module — Apollo CSM The Apollo 15 CSM in lunar orbit Description Role: Earth and Lunar Orbit Crew: 3; CDR, CM pilot, LM pilot Dimensions Height: 36.2 ft 11.03 m …
49Low-noise block converter — A low noise block converter (LNB, for low noise block, or sometimes LNC, for low noise converter) is the (receiving, or downlink) antenna of what is commonly called the parabolic (actually paraboloid) satellite dish commonly used for satellite TV …
50FTA receiver — A Viewsat Xtreme FTA receiver A free to air or FTA Receiver is a satellite television receiver designed to receive unencrypted broadcasts. Modern decoders are typically compliant with the MPEG 2/DVB S and more recently the MPEG 4/DVB S2 standard… …
