|Industry||Direct broadcast satellite broadcasting|
|Fate||Acquired by DirecTV|
PrimeStar was a U.S. direct broadcast satellite broadcasting company formed in 1991 by a consortium of cable television system operators. PrimeStar was the first medium-powered DBS system in the United States but slowly declined in popularity with the arrival of DirecTV in 1994 and Dish Network in 1996.
Broadcast originally in analog, they later converted to digital technology. The system used the DigiCipher 1 system for conditional access control and video compression. The video format was MPEG-2.
The company was in the process of converting to a high powered DBS platform when it was purchased and shut down by DirecTV. The Tempo-1 and Tempo-2 DBS satellites acquired by PrimeStar from the defunct ASkyB were renamed DirecTV-5 and DirecTV-6, respectively.
The system initially launched using medium-powered FSS satellites that were facing obsolescence with the onset of high-powered DBS and its much smaller, eighteen inch satellite dishes. In a move to convert the platform to DBS, PrimeStar bid for the 110-degree satellite location that was eventually awarded to a never-launched direct broadcast satellite service by MCI and News Corporation called ASkyB.
The ASkyB company sold the incomplete Tempo 1 and Tempo 2 DBS satellites to PrimeStar in the process of going out of business. PrimeStar launched Tempo-2 in 1997 but it was not used for many years. PrimeStar stored the other satellite, Tempo-1, until the company and the two satellites were purchased by DirecTV. DirecTV eventually launched the Tempo 1 satellite after years of delays as the DirecTV-5 satellite in 2002.
PrimeStar Partners sold its assets to DirecTV in 1999 and all subscribers were converted to the DirecTV platform. The PrimeStar brand and its FSS broadcast platform was shut down. Meanwhile, Tempo 1 and Tempo 2 satellite remained and were renamed DirecTV-5 and DirecTV-6, respectively, and moved to several locations to serve DirecTV customers.
The company that was awarded the 110-degree slot, ASkyB, eventually became defunct and the license for the 110-degree satellite location was resold to EchoStar, the parent company of DISH Network. The 110-degree satellite is now named EchoStar West 110 and is the most commonly used satellite, along with 119 as both can be received with a single wide format parabolic dish, providing signal to North America.
Use of old equipment 
- http://www.coolstf.com/mpeg/ PrimeStar digital video information
- http://findarticles.com/p/articles/mi_m0EIN/is_1997_June_11/ai_19491382 ASkyB Sells Assets to PrimeStar
- http://space.skyrocket.de/doc_sdat/tempo.htm Tempo 1 and Tempo 2 satellite information
- http://www.spaceflightnow.com/proton/dtv5/ Launch of DirecTV-5 (former Tempo-1)
See also 
- AlphaStar, a defunct satellite broadcaster that also used medium-powered FSS satellites and larger dishes.
- DirecTV, a direct competitor using high-powered DBS satellites and smaller dishes.
- Dish Network, a direct competitor using high-powered DBS satellites and smaller dishes.
- Shaw Direct, a Canadian broadcaster using medium-powered FSS satellites and larger dishes.
- Bell TV, a Canadian broadcaster using high-powered DBS satellites and smaller dishes.
- Free to Air