DirecTV-11

DirecTV -11 is a television satellite, which provides HDTV Television for DirecTV users in North America. It was launched on March 19, 2008 by Sealaunch in the Pacific with a Zenit- 3SL. After the test operation of the satellite into its final position was brought to 99.2 ° West position.

He is the second of three identical DirecTV satellite ( DirecTV 10, 11 and 12) which were built on the basis of the satellite bus Boeing 702. The contract with Boeing was signed in 2004. DirecTV -10 was launched on July 7, 2007 by International Launch Services from the Baikonur space center with a Proton-M/Bris-M and brought 102.775 ° West position. DirecTV -12 should remain as a spare satellite on the ground initially, but was then contacted with a Proton-M/Bris-M into a geostationary transfer orbit 29 December 2009 from Baikonur.

Technology

DirecTV 11 transmits most of the MPEG-4 coded signals, which allows a more efficient transfer compared to the data encoded in the MPEG-2 standard channels and thus a larger number of channels.

DirecTV 10 and 11 to be placed in each case at a small distance to the satellite and Spaceway Spaceway -1 -2. These were actually designed to transfer to a 500 -MHz-wide channel are each simple broadcast and two-way Internet data. At the request of DirecTV, however, Boeing turned off this option to transfer additional HDTV channels.

DirecTV - 11 has 32 ​​active and 12 reserve -Ka- band transmitter for large-scale transfer of national programs as well as 55 active and 15 reserve spot stations for local television channels. As a transmitter traveling wave tubes are used, which are of UTJ - gallium-arsenide solar panels with a span of 48.1 m and 18 kW ( BOL) with energy. The signals emitted by two Ka-band antennas, each 2.8 feet in diameter and nine other Ka-band antenna.