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Badr-4 (aka Arabsat 4B) is an EADS Astrium-built〔(【引用サイトリンク】title=Badr-4 & Badr-6 ) 〕 communications satellite operated by Arabsat, launched November 8, 2006 on a Proton-M/Briz-M rocket. It provides fixed satellite communications services in C- and Ku-bands from the 26° East orbital position. The satellite is based on the Eurostar E2000+ platform and equipped with a payload supplied by Alcatel Alenia Space. The Badr-4-payload consists of 28 active channels in Ku band (16 in BSS and 12 in FSS). Payload power is about 6 kW. The satellite has two 2.5 m deployable antennas and one 1.35 m top floor antenna. Badr 4 is located at 26.0°E.〔(【引用サイトリンク】 Badr 4 at 26.0°E )〕 The satellite was a successfully launched from Russia. Due to success of the satellite, Arabsat led another agreement for an upgraded version of Badr-4 communication satellite: in June 2006, EADS Astrium was awarded the contract by Arabsat for construction of Badr-6, a new high-power broadcast satellite to cover the Middle East and Africa.〔 Badr-6 was launched by an Ariane 5 in July 2008. == Description == This satellite carries 32 transponders in Ku band/FSS & Ku band/BSS. The spacecraft utilizes Astrium's Eurostar E2000+ platform to carry 22 C-band transponders (including eight 52 W moderate power transponders) and 12 Ku band transponders. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Badr-4」の詳細全文を読む スポンサード リンク
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