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Nimiq-5
Nimiq-5 is a Canadian communications satellite, operated by Telesat Canada as part of its Nimiq fleet of satellites. It is positioned in geostationary orbit at a longitude of 72.7° West of the Prime meridian (Greenwich), Greenwich Meridian. As of July 2015, EchoStar, EchoStar Corporation leases the satellite's entire capacity to provide high-definition television direct-to-home broadcasting for Dish Network , Dish Network Corporation. When accessed using a multi-satellite receiver such as the Dish Network#Broadcast technology, VIP722k and a multi-satellite dish/Low-noise block downconverter, LNB combo, such as the Dish-300, Dish-500, or Dish-Turbo 1000.4, the satellite is referred to by the on-screen diagnostics as Echostar 72 W. Spacecraft Nimiq-5 was built by SSL (company), Space Systems/Loral, and is based on the SSL 1300, LS-1300 satellite bus. The contract to build it was announced on 4 January 2007. At launch, it will have a mass of , and is expected to operate for fift ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nimiq
The Nimiq satellites are a Canadian fleet of geostationary telecommunications satellites owned by Telesat and used by satellite television providers including Bell Satellite TV and EchoStar (Dish Network). 'Nimiq' is an Inuit word used for an object or a force which binds things together. A contest in 1998 was held to choose the name of these satellites. The contest drew over 36,000 entries. Sheila Rogers, a physiotherapist from Nepean, Ontario, submitted the winning name. Nimiq-1 Nimiq-1 was launched on 21 May 1999 by a Proton-K / Blok DM-03 launch vehicle from Baikonur Cosmodrome in Kazakhstan. It was Canada's first direct broadcast digital TV satellite and was paid for by Telesat, a Canadian communications company and subsidiary of Bell Canada Enterprises. * Manufacturer: Lockheed Martin * Satellite Type: Lockheed Martin, A2100AX * Weight: * Dimensions: 5.8 x 2.4 x 2.4 m and a 27 m2 solar array * DC power: 120 W * Expected lifetime: 12 years * Transponders: 32 * V ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Telesat Canada
Telesat, formerly Telesat Canada, is a Canadian satellite communications company founded on May 2, 1969. The company is headquartered in Ottawa. History Founding and privatization (1969-2005) Telesat began in 1969 as Telesat Canada, a Canadian Crown corporation created by an Act of Parliament. Telesat Canada launched Anik A1 in 1972 as the world's first domestic communications satellite in geostationary orbit operated by a commercial company; this satellite was retired from use in 1981. Until February 1979, Telesat had a legal monopoly on Earth stations in Canada: any entity wishing to send or receive satellite signals had to sign a long-term lease with Telesat Canada for an Earth station. Contracts for such leases were still enforced after the monopoly was ended. Telesat Canada was privatized and sold by the federal government to Bell Canada in 1998. Loral Space purchase (2006-2015) On December 18, 2006, Loral Space & Communications announced that it, along with Canada' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Telesat
Telesat, formerly Telesat Canada, is a Canadian satellite communications company (law), company founded on May 2, 1969. The company is headquartered in Ottawa. History Founding and privatization (1969-2005) Telesat began in 1969 as Telesat Canada, a Canadian Crown corporation created by an Act of Parliament. Telesat Canada launched Anik (satellite), Anik A1 in 1972 as the world's first domestic communications satellite in geostationary orbit operated by a commercial company; this satellite was retired from use in 1981. Until February 1979, Telesat had a legal monopoly on Ground station, Earth stations in Canada: any entity wishing to send or receive satellite signals had to sign a long-term lease with Telesat Canada for an Ground station, Earth station. Contracts for such leases were still enforced after the monopoly was ended. Telesat Canada was privatized and sold by the federal government to Bell Canada in 1998. Loral Space purchase (2006-2015) On December 18, 2006, Loral ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nimiq-4
Nimiq-4 is a Canadian geosynchronous communications satellite. It was launched aboard a Proton-M / Briz-M launch vehicle at 21:48:00 UTC on 19 September 2008. It was positioned at 82.0° West longitude, and operated by Telesat Canada. Spacecraft The satellite was constructed by EADS Astrium, using a Eurostar-3000S bus. It is powered by two solar panels, with a span of , producing 12 kW of power. The launch mass of the satellite is , with fuel. It carries 40 transponders, 32 of which operate in the Ku-band, and 8 which operate in the Ka-band. It provides digital HDTV to Canada and United States. See also * Nimiq The Nimiq satellites are a Canadian fleet of geostationary telecommunications satellites owned by Telesat and used by satellite television providers including Bell Satellite TV and EchoStar (Dish Network). 'Nimiq' is an Inuit word used for an o ... References Communications satellites in geostationary orbit Spacecraft launched in 2008 Satelli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Briz-M
The Briz-K, Briz-KM and Briz-M ( meaning ''Breeze-K, KM and M'') are Russian liquid-propellant rocket orbit insertion upper stages manufactured by Khrunichev State Research and Production Space Center and used on the Proton-M and Angara A5. The upper stages were also used on Rokot, one of Russia's smaller launchers, before its retirement in 2019. Characteristics Briz-K and Briz-KM Briz-K, GRAU index 14S12, is a single-piece structure with a conical tank compartment and the engine located in a recess in the fuel tank. Briz-KM (GRAU index 14S45) is an improved version of Briz-K. The Briz-K and Briz-KM were used as a third stage of the Rokot launch vehicles. Briz-M Briz-M, GRAU index 14S43, is designed for injecting large payloads into a low, medium-height or high geosynchronous orbit. Briz-M is a twin upper stage consisting of a core module (using Briz-KM as the baseline) and a jettisonable add-on toroidal tank surrounding the core. It is powered by a pump-fed gimballed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Communications Satellite
A communications satellite is an artificial satellite that relays and amplifies radio telecommunication signals via a Transponder (satellite communications), transponder; it creates a communication channel between a source transmitter and a Radio receiver, receiver at different locations on Earth. Communications satellites are used for television, telephone, radio, internet, and military applications. Many communications satellites are in geostationary orbit above the equator, so that the satellite appears stationary at the same point in the sky; therefore the satellite dish antennas of ground stations can be aimed permanently at that spot and do not have to move to track the satellite. Others form satellite constellations in low Earth orbit, where antennas on the ground have to follow the position of the satellites and switch between satellites frequently. The radio waves used for telecommunications links travel by Line-of-sight propagation, line of sight and so are obstructe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prime Meridian (Greenwich)
The Greenwich meridian is a prime meridian, a geographical reference line that passes through the Royal Observatory, Greenwich, Royal Observatory, Greenwich, in London, England. From 1884 to 1974, the Greenwich meridian (geography), meridian was the international standard prime meridian, used worldwide for timekeeping and navigation. The modern standard, the IERS Reference Meridian, is based on the Greenwich meridian, but differs slightly from it. This prime meridian (at the time, one of prime meridian, many) was first established by George Biddell Airy, Sir George Airy (in 1851). In 1883, the International Geodetic Association formally recommended to governments that the meridian through Greenwich be adopted as the international standard prime meridian. In October of the following year, at the invitation of the President of the United States, 41 delegates from 25 nations met in Washington, D.C., United States, for the International Meridian Conference. This inter-governmen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
EchoStar
EchoStar Corporation is an American telecommunications company, specializing in satellite communication, wireless telecommunications, and internet services. Echostar also provides multichannel video programming and mobile services through its subsidiaries: Dish Network, Boost Mobile, Sling TV, EchoStar Mobile, and Hughes Network Systems. Originally establishing the Dish Network brand name in 1996, EchoStar later acquired Dish as a wholly-owned subsidiary in 2023. EchoStar made its debut on the Fortune 500 list in 2024, ranking #242. Its main competitor is DirecTV, who failed to acquire Dish Network in 2024. History EchoStar was originally formed in 1980 by its chairman Charles Ergen as a distributor of C band TV systems. In 1987, it applied for a direct broadcast satellite (DBS) license with the Federal Communications Commission and was granted access to orbital slot 119° west longitude in 1992. On December 28, 1995, the firm successfully launched its first satellite, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
High-definition Television
High-definition television (HDTV) describes a television or video system which provides a substantially higher image resolution than the previous generation of technologies. The term has been used since at least 1933; in more recent times, it refers to the generation following standard-definition television (SDTV). It is the standard video format used in most broadcasts: Terrestrial television, terrestrial broadcast television, cable television, satellite television. Formats HDTV may be transmitted in various formats: * 720p (): 921,600 pixels * 1080i () interlaced scan: 1,036,800 pixels (≈1.04Mpx). * 1080p () progressive scan: 2,073,600 pixels (≈2.07Mpx). ** Some countries also use a non-standard CTA resolution, such as : 777,600 pixels (≈0.78Mpx) per field or 1,555,200 pixels (≈1.56Mpx) per frame When transmitted at two megapixels per frame, HDTV provides about five times as many pixels as SD (standard-definition television). The increased resolution provides for a cl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dish Network
DISH Network L.L.C., often referred to as DISH, an abbreviation for Digital Sky Highway, is an American provider of satellite television and IPTV services and wholly owned subsidiary of EchoStar Corporation. The company was originally established as EchoStar Communications, and first launched its satellite television services under the DISH Network brand in 1996, utilizing its EchoStar I satellite. In 2007, EchoStar spun off its infrastructural business and the brand itself under a separate entity under the EchoStar name with the existing company rebranding to DISH Network Corporation. Both companies would remain under the control of EchoStar's co-founder Charlie Ergen. After the spin-off, the company pursued further acquisitions and business initiatives, including acquiring video rental chain Blockbuster in an attempt to compete with Netflix, releasing a new set-top digital video recorder (DVR) with the controversial ability to automatically skip commercials in recording ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Direct-to-home Broadcasting
Satellite television is a service that delivers television programming to viewers by relaying it from a communications satellite orbiting the Earth directly to the viewer's location.ITU Radio Regulations, Section IV. Radio Stations and Systems – Article 1.39, definition: ''Broadcasting-satellite service'' The signals are received via an outdoor parabolic antenna commonly referred to as a satellite dish and a low-noise block downconverter. A satellite receiver decodes the desired television program for viewing on a television set. Receivers can be external set-top boxes, or a built-in television tuner. Satellite television provides a wide range of channels and services. It is usually the only television available in many remote geographic areas without terrestrial television or cable television service. Different receivers are required for the two types. Some transmissions and channels are unencrypted and therefore free-to-air, while many other channels are transmitted with enc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dish Network
DISH Network L.L.C., often referred to as DISH, an abbreviation for Digital Sky Highway, is an American provider of satellite television and IPTV services and wholly owned subsidiary of EchoStar Corporation. The company was originally established as EchoStar Communications, and first launched its satellite television services under the DISH Network brand in 1996, utilizing its EchoStar I satellite. In 2007, EchoStar spun off its infrastructural business and the brand itself under a separate entity under the EchoStar name with the existing company rebranding to DISH Network Corporation. Both companies would remain under the control of EchoStar's co-founder Charlie Ergen. After the spin-off, the company pursued further acquisitions and business initiatives, including acquiring video rental chain Blockbuster in an attempt to compete with Netflix, releasing a new set-top digital video recorder (DVR) with the controversial ability to automatically skip commercials in rec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
