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One use of the C band is for satellite communication, whether for full-time satellite television networks or raw satellite feeds, although subscription programming also exists. This use contrasts with direct-broadcast satellite , which is a completely closed system used to deliver subscription programming to small satellite dishes that are ...
Typical transponders each have a bandwidth between 27 and 50 MHz. Each geostationary C-band satellite needs to be spaced 2° longitude from the next satellite to avoid interference; for K u the spacing can be 1°. This means that there is an upper limit of 360/2 = 180 geostationary C-band satellites or 360/1 = 360 geostationary K u-band satellites.
In 1979, the Satellite Home Viewers Act allowed homeowners in the United States to both own and operate their own home satellite system, consisting of C-band equipment from a multitude of manufacturers who were making parts for systems such as Taylor Howard's, and began a large controversy of which channels could be received by whom.
[citation needed] As of 2009, there are 23 C-band satellites and 38 K u /K a band satellites. [17] There were over 150 channels for people who want to receive subscription channels on a C-band dish via Motorola's 4DTV equipment via two vendors Satellite Receivers Ltd (SRL) and Skyvision Archived January 13, 2011, at the Wayback Machine. The ...
In this plan, PBS would continue to lease four C-band transponders starting in 1991, with the goal being to convert their satellite operations to Ku-band sometime in 1993 or 1994. [24] In 1991, PBS purchased C-band transponder space on the Spacenet 1 satellite, owned by GTE, at orbital position 120°W. [9] This move occurred on January 3, 1991.
Located in a geostationary orbit, AMC-4 provides service to commercial and government customers, with programming distribution, satellite news gathering and broadcast internet capabilities. [ 3 ] AMC-4 was launched on 13 November 1999 at 22:54 UTC as GE-4, GE Americom's fourth A2100 hybrid C-band and Ku-band satellite.
Hybrid C/K u-band satellite 2008-11-19 121.0°W: Galaxy-23: FS-1300: United States Intelsat: Direct Broadcasting North America: 7 August 2003: Hybrid C/K u /K a-band satellite; C band payload referred to as Galaxy-23 2008-11-26 EchoStar-9: FS-1300: United States Echostar/DISH Network: Direct Broadcasting North America: 7 August 2003
In the United States, National Programming Service, LLC (NPS) was the primary provider of subscription programming to 4DTV and C band/K u band users. They ceased operations as of December 26, 2010 after making a controversial attempt of converting all of their customers over to Dish Network which failed.