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Satcom 1
Satcom, a portmanteau of satellite communications, was a brand of artificial geo-stationary communications satellites originally developed and operated by RCA American Communications ( RCA Americom) that facilitated wide-area telecommunications by receiving radio signals from Earth, amplifying them, and relaying them back down to terrestrial receivers. Satcom was one of the early geostationary satellites; the first were the Syncom series, in 1964. The first Satcom satellite, Satcom 1, was launched on 13 December 1975. The last satellite, Satcom K2, was placed into orbit on 27 November 1985 and was de-orbited in February 2002. Satcom was first superseded and then replaced by the GE series of satellites. The Satcom system passed to General Electric with its purchase of RCA in 1986. RCA Americom became GE American Communications (GE Americom) and the satellite construction division became GE Astro Space. GE Astro Space was sold to Martin Marietta (now Lockheed Martin Space ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
STS-61-C SATCOM Ku-1 Deployment
STS-61-C was the 24th mission of NASA's Space Shuttle program, and the seventh mission of Space Shuttle Columbia, Space Shuttle ''Columbia''. It was the first time that ''Columbia'', the first space-rated Space Shuttle orbiter to be constructed, had flown since STS-9. The mission launched from Florida's Kennedy Space Center on January 12, 1986, and landed six days later on January 18, 1986. STS-61-C's seven-person crew included the first Costa Rican-born astronaut, Franklin Chang-Díaz, the second African-American shuttle pilot, Charles Bolden, and the second sitting politician to fly in space, Rep. Bill Nelson (D-FL). Both Bolden and Nelson would also later go on to become Administrator of NASA, Administrators of NASA. STS-61-C was the last shuttle mission before the Space Shuttle Challenger disaster, Space Shuttle ''Challenger'' disaster, which occurred ten days after STS-61-C's landing. Crew Crew seat assignments Mission background STS-61-C saw ''Columbia'' retur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ESPN
ESPN (an initialism of their original name, which was the Entertainment and Sports Programming Network) is an American international basic cable sports channel owned by the Walt Disney Company (80% and operational control) and Hearst Communications (20%) through the joint venture ESPN Inc. The company was founded in 1979 by Bill Rasmussen, Scott Rasmussen and Ed Eagan. ESPN broadcasts primarily from studio facilities located in Bristol, Connecticut. The network also operates offices and auxiliary studios in Miami, Orlando, New York City, Las Vegas, Seattle, Charlotte, Washington, D.C., and Los Angeles. James Pitaro has been chairman since March 5, 2018, following the resignation of John Skipper on December 18, 2017. , ESPN is available to approximately 70 million pay television households in the United States—down from its 2011 peak of 100 million households. It operates regional channels in Africa, Australia, Latin America, and the Netherlands. In Ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boeing Satellite Systems
The Boeing Satellite Development Center is a major business unit of Boeing Defense, Space & Security. It brought together Boeing satellite operations with that of GM Hughes Electronics' Space and Communications division in El Segundo, California. History The facility was originally built by Nash Motors in 1946 and begun production in 1948, building the Nash Rambler. Howard Hughes' Hughes Aircraft Company formed the Aerospace Group within the company when they bought the facility in 1955, when the Nash company became American Motors Corporation and divided the facility into: * Hughes Space and Communications Group * Hughes Space Systems Division In 1953, the Howard Hughes Medical Institute (HHMI) was formed, and Hughes Aircraft reformed as a subsidiary of the foundation. The charity status of the foundation allowed Hughes Aircraft to avoid taxes on its huge income. In 1961, the two Aerospace Group divisions were reformed as Hughes Space and Communications Company. Hughes S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geostationary Transfer Orbit
In space mission design, a geostationary transfer orbit (GTO) or geosynchronous transfer orbit is a highly elliptical type of geocentric orbit, usually with a perigee as low as low Earth orbit (LEO) and an apogee as high as geostationary orbit (GEO). Satellites that are destined for geosynchronous orbit (GSO) or GEO are often put into a GTO as an intermediate step for reaching their final orbit. Larson, Wiley J. and James R. Wertz, eds. Space Mission Design and Analysis, 2nd Edition. Published jointly by Microcosm, Inc. (Torrance, CA) and Kluwer Academic Publishers (Dordrecht/Boston/London). 1991. Manufacturers of launch vehicles often advertise the amount of payload the vehicle can put into GTO. Background Geostationary and geosynchronous orbits are very desirable for many communication and Earth observation satellites. However, the delta-v, and therefore financial, cost to send a spacecraft to such orbits is very high due to their high orbital radius. A GTO is an intermedia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Delta 3000
The Delta 3000 series was an American expendable launch system which was used to conduct 38 orbital launches between 1975 and 1989. It was a member of the Delta family of rockets. Several variants existed, which were differentiated by a four digit numerical code. Configurations The first stage was the RS-27 powered Extended Long Tank Thor, first flown on the 2000-series. Three or nine Castor-4 solid rocket boosters (SRB) were attached to increase thrust at lift-off, replacing the less powerful Castor-2 boosters used on earlier models. Two second stages were available; the Delta-P, which had been flown on the Delta 1000 and 2000 series, or the Delta-K, an uprated version with the Aerojet engine. Some launches used a three-stage configuration in order to reach higher orbits. A Star-37D, Star-37E, or Star-48B PAM-D could be used as an upper stage. Launches with PAM-D upper stages were designated ''Delta 3XX0 PAM-D'', rather than assigning a code to the upper stage for us ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
GE Americom
SES Americom was a major commercial communications satellite, satellite operator of North American geosynchronous satellites based in the United States. The company started as RCA Americom in 1975 before being bought by General Electric in 1986 and then later acquired by SES (company), SES in 2001. In September 2009, SES Americom and SES New Skies merged into SES World Skies. History RCA American Communications (RCA Americom) was founded in 1975 as an operator of RCA Astro Electronics-built satellites. The company's first satellite; Satcom (satellite), Satcom 1, was launched on 12 December 1975. Satcom 1 was one of the earliest geostationary satellites. Satcom 1 was instrumental in helping early cable TV channels (such as Superstation TBS and Christian Broadcasting Network, CBN) to become initially successful, because these channels distributed their programming to all of the local cable TV Cable television headend, headends using the satellite. Additionally, it was the first ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Breakup Of The Bell System
The Bell System held a virtual monopoly over telephony infrastructure in the United States since the early 20th century until January 8, 1982. This divestiture of the Bell Operating Companies was initiated in 1974 when the United States Department of Justice filed '' United States v. AT&T'', an antitrust lawsuit against AT&T. At the time, AT&T had substantial control over the United States' communications infrastructure. Not only was it the sole telephone provider throughout most of the country, its subsidiary Western Electric produced much of its equipment. Relinquishing ownership of Western Electric was one of the Justice Department’s primary demands. AT&T Corporation proposed in a consent decree to relinquish control of the Bell Operating Companies, which had provided local telephone service in the United States. AT&T would continue to be a provider of long-distance service, while the now-independent Regional Bell Operating Companies (RBOCs), nicknamed the "Baby Bells", w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ground Station
A ground station, Earth station, or Earth terminal is a terrestrial radio station designed for extraplanetary telecommunication with spacecraft (constituting part of the ground segment of the spacecraft system), or reception of radio waves from astronomical radio sources. Ground stations may be located either on the surface of the Earth, or in its atmosphere. Earth stations communicate with spacecraft by transmitting and receiving radio waves in the super high frequency (SHF) or extremely high frequency (EHF) bands (e.g. microwaves). When a ground station successfully transmits radio waves to a spacecraft (or vice versa), it establishes a telecommunications link. A principal telecommunications device of the ground station is the parabolic antenna. Ground stations may have either a fixed or itinerant position. Article 1 § III of the International Telecommunication Union (ITU) Radio Regulations describes various types of stationary and mobile ground stations, and their inte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AT&T
AT&T Inc., an abbreviation for its predecessor's former name, the American Telephone and Telegraph Company, is an American multinational telecommunications holding company headquartered at Whitacre Tower in Downtown Dallas, Texas. It is the world's List of telecommunications companies, third largest telecommunications company by revenue and the List of mobile network operators in the United States, third largest wireless carrier in the United States behind T-Mobile US, T-Mobile and Verizon. As of 2023, AT&T was ranked 32nd on the Fortune 500, ''Fortune'' 500 rankings of the largest United States corporations, with revenues of $122.4 billion. The modern company to bear the AT&T name began its history as the American District Telegraph Company, formed in St. Louis in 1878. After expanding services to Arkansas, Kansas, Oklahoma and Texas through a series of mergers, it became the Southwestern Bell Telephone Company in 1920. Southwestern Bell was a subsidiary of AT&T Corporation, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Broadcasting Company
The American Broadcasting Company (ABC) is an American Commercial broadcasting, commercial broadcast Television broadcaster, television and radio Radio network, network that serves as the flagship property of the Disney Entertainment division of the Walt Disney Company. ABC is headquartered on Riverside Drive in Burbank, California, directly across the street from Walt Disney Studios (Burbank), Walt Disney Studios and adjacent to the Team Disney – Roy E. Disney Animation Building. The network maintains secondary offices at 77 66th Street (Manhattan), West 66th Street on the Upper West Side of Manhattan, New York City, which houses its broadcast center and the headquarters of its news division, ABC News (United States), ABC News. Since 2007, when ABC Radio (also known as Cumulus Media Networks) was sold to Citadel Broadcasting, ABC has reduced its broadcasting operations almost exclusively to television. The youngest of the "Big Three (American television), Big Three" American ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ted Turner
Robert Edward Turner III (born November 19, 1938) is an American entrepreneur, television producer, media proprietor, and Philanthropy, philanthropist. He founded the CNN, Cable News Network (CNN), the first 24-hour United States cable news, cable news channel. In addition, he founded WPCH-TV, WTBS, which pioneered the superstation concept in cable television, as well as television networks TBS (American TV channel), TBS and TNT (American TV network), TNT. As a philanthropist, he gave $1 billion to create the United Nations Foundation, a public charity to broaden U.S. support for the United Nations. Turner serves as Chairperson, Chairman of the United Nations Foundation board of directors. Additionally, in 2001, Turner co-founded the Nuclear Threat Initiative with US Senator Sam Nunn (D-GA). NTI is a non-partisan organization dedicated to reducing global reliance on, and preventing the proliferation of nuclear, chemical, and biological weapons. He currently serves as co-chairm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
