Eurobird 1
Encyclopedia
Eurobird 1 is a Eutelsat
Eutelsat
Eutelsat S.A. is a French-based satellite provider. Providing coverage over the entire European continent, as well as the Middle East, Africa, India and significant parts of Asia and the Americas, it is one of the world's three leading satellite operators in terms of revenues.Eutelsat’s satellites...

 operated Eurobird
Eurobird
Eurobird is the name for a set of satellites owned by Eutelsat. The Eurobird satellites provide broadcasting and telecommunication services primarily to the Western and Central European region from orbital positions of 28.5, 25.5 and 33 degrees East....

 satellite
Satellite
In the context of spaceflight, a satellite is an object which has been placed into orbit by human endeavour. Such objects are sometimes called artificial satellites to distinguish them from natural satellites such as the Moon....

, used primarily for digital television
Digital television
Digital television is the transmission of audio and video by digital signals, in contrast to the analog signals used by analog TV...

. It is located at 28.5° east in the Clarke Belt, just within the range of most satellite dishes pointed at SES Astra
SES Astra
Astra is the name for the geostationary communication satellites, both individually and as a group, which are owned and operated by SES S.A., a global satellite operator based in Betzdorf, in eastern Luxembourg. The name is sometimes also used to describe the channels broadcasting from these...

's Astra 2A
Astra 2A
Astra 2A is a communications satellite owned by SES Astra. Launched in 1998, half its expected end-of-life capacity of 28 transponders were pre-booked by BSkyB, who utilised it to launch their new Sky Digital service...

, 2B
Astra 2B
Astra 2B is a communications satellite owned and operated by SES Astra, launched in 2000 to join Astra 2A at the Astra 28.2°E orbital slot providing digital television and radio broadcast services to the UK and Republic of Ireland....

 and 2D
Astra 2D
Astra 2D is one of a group of Astra communications satellites operated by SES, located at 28.2° east in the Clarke Belt. It is a Hughes HS-376 craft, and was launched from the Guiana Space Centre in December 2000....

 at 28.2° east
Astra 28.2°E
Astra 28.2°E is the name for the group of Astra communications satellites co-located at the 28.2° East position in the Clarke Belt that are owned and operated by SES based in Betzdorf, Luxembourg...

. It was launched in March 2001, and after a short period testing at 33°E, joined Eutelsat 2F4 at 28.5°E.

The satellite has three beams, one fixed, covering almost all of Europe
Europe
Europe is, by convention, one of the world's seven continents. Comprising the westernmost peninsula of Eurasia, Europe is generally 'divided' from Asia to its east by the watershed divides of the Ural and Caucasus Mountains, the Ural River, the Caspian and Black Seas, and the waterways connecting...

 as well as north-western Africa, although carrying only United Kingdom
United Kingdom
The United Kingdom of Great Britain and Northern IrelandIn the United Kingdom and Dependencies, other languages have been officially recognised as legitimate autochthonous languages under the European Charter for Regional or Minority Languages...

 and Republic of Ireland
Republic of Ireland
Ireland , described as the Republic of Ireland , is a sovereign state in Europe occupying approximately five-sixths of the island of the same name. Its capital is Dublin. Ireland, which had a population of 4.58 million in 2011, is a constitutional republic governed as a parliamentary democracy,...

 targeted channels, and two steerable - the first, "S1", co-focused with the fixed beam but with a Europe-only footprint, and a second, "S2", aimed to central Europe. This beam features many transponder
Transponder
In telecommunication, the term transponder has the following meanings:...

s with low symbol rate
Symbol rate
In digital communications, symbol rate is the number of symbol changes made to the transmission medium per second using a digitally modulated signal or a line code. The Symbol rate is measured in baud or symbols/second. In the case of a line code, the symbol rate is the pulse rate in pulses/second...

s, used for satellite news gathering.

Once stationed at 28.5°E, the satellite was promoted as providing satellite coverage for all of Europe, and featured both analogue and digital television and radio services serving Austria
Austria
Austria , officially the Republic of Austria , is a landlocked country of roughly 8.4 million people in Central Europe. It is bordered by the Czech Republic and Germany to the north, Slovakia and Hungary to the east, Slovenia and Italy to the south, and Switzerland and Liechtenstein to the...

, the Czech Republic
Czech Republic
The Czech Republic is a landlocked country in Central Europe. The country is bordered by Poland to the northeast, Slovakia to the east, Austria to the south, and Germany to the west and northwest....

, Slovakia
Slovakia
The Slovak Republic is a landlocked state in Central Europe. It has a population of over five million and an area of about . Slovakia is bordered by the Czech Republic and Austria to the west, Poland to the north, Ukraine to the east and Hungary to the south...

 and other countries. Many of the services it carried had previously been on Kopernikus 2
DFS Kopernikus
DFS-Kopernikus meaning Deutscher Fernmeldesatellit Kopernikus) was the name of three geostationary satellite of Deutsche Bundespost and later Deutsche Telekom AG...

 which had operated at 28.5°E since 1990. These stations slowly started to leave, mostly due to viewers/listeners in those target audiences moving to more traditional orbital positions - 19.2°E for Austria, and the relatively new 23.5°E for the Czech and Slovak Republics. Additional demand for bandwidth at 28°E, to carry HDTV signals, is likely to lead to S2 having its frequency plan re-arranged so as to allow Sky Digibox receivers to see its transponders.

It features 24 active transponders and 12 backup transponders, all Ku band
Ku band
The Kμ band is a portion of the electromagnetic spectrum in the microwave range of frequencies. This symbol refers to —in other words, the band directly below the K-band...

. 12 of its transponders are significantly wider (72 MHz bandwidth) than traditional broadcast satellites, and are reconfigurable into multiple "virtual" transponders. Each transponder is fixed only in its polarity, and many are carrying at least two, and up to 6 virtual transponders.

See also

  • Astra 19.2°E
    Astra 19.2°E
    Astra 19.2°E is the name for the group of communications satellites co-located at the 19.2°East orbital position in the Clarke Belt that are owned and operated by SES Astra, a subsidiary of SES based in Betzdorf, Luxembourg....

  • Astra 28.2°E
    Astra 28.2°E
    Astra 28.2°E is the name for the group of Astra communications satellites co-located at the 28.2° East position in the Clarke Belt that are owned and operated by SES based in Betzdorf, Luxembourg...

  • Astra 23.5°E
    Astra 23.5°E
    Astra 23.5°E is the name for the group of communications satellites co-located at the 23.5° east position in the Clarke Belt owned and operated by SES Astra, a subsidiary of SES based in Betzdorf, Luxembourg...

  • List of broadcast satellites
  • SES Astra
    SES Astra
    Astra is the name for the geostationary communication satellites, both individually and as a group, which are owned and operated by SES S.A., a global satellite operator based in Betzdorf, in eastern Luxembourg. The name is sometimes also used to describe the channels broadcasting from these...


External links


The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
x
OK