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Kizuna, also known by its pre-launch name of WINDS (Wideband InterNetworking engineering Demonstration Satellite) is a Japanese (JAXA) geostationary, technology demonstration craft that was launched by a H-2A rocket from Tanegashima island at 08:55 UT on 23 February 2008. The 4,850 kg (2,450 kg dry) craft is reported to carry an ultra-fast, 1.2 Gbps direct-to-home downlink in Ka-band, via two multi-beam antennas, one for Japan and the other covering several southeast Asian cities. It also carries an Active Phased Array Antenna (APAA) which can change the beam direction rapidly.

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Alternate Names

  • 32500

Facts in Brief

Launch Date: 2008-02-23
Launch Vehicle: H-2A
Launch Site: Tanegashima, Japan
Mass: 2450 kg

Funding Agency

  • Unknown (Japan)


  • Technology Applications

Additional Information

Questions and comments about this spacecraft can be directed to: Coordinated Request and User Support Office

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