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SuperDish
The SuperDish is a satellite dish that was deployed by Dish Network in November 2003 as a means to provide more channels for subscribing customers. Its elliptical reflector is 36" x 20" - more than 50% larger than the round 20" Dish 500. The SuperDish receives signals from three orbiting satellites, as opposed to two signals with a DISH 500. The three satellites are at 110°W, 119°W, and either 105°W or 121°W depending on customer requirements. The 105-degree orbital slot provided local channels via Ku band from SES Americom's AMC-15 satellite. The other, 121-degree orbital slot provided local channels and international packages via Ku band from EchoStar 9, which is also known as Galaxy 23/EchoStar 9 due to a joint partnership with Intelsat.
==Technology==
These two satellite services, and their older Fixed Service Satellite technology, were provided to add additional capacity that lets DISH Network satisfy the Federal Communications Commission's "must-carry" requirements for local channels, and make room for HDTV. In addition, several dozen international services have been added to DISH Network's channel line-up. The SuperDish receives standard Direct broadcast satellite (DBS) services in circular polarization at 12.7 GHz from Echostar's existing 110°W and 119°W slots. The 105°W and 121°W slots are received in linear polarization at 11.7 GHz at a much lower power. As a result, SuperDISH-compatible receivers must be able to receive circularly-polarized and linearly-polarized signals at two different frequency ranges from up to four satellites.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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