IARU Amateur Satellite Frequency Coordination

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Politech.1 Updated: 05 May 2014   Responsible Operator Luis Sempere Paya EA5RKP
Supporting Organisation Universidad Polit├ęcnica de Valencia  
Contact Person lsempere@dcom.upv.es.nospam  
Headline Details: Politech.1 carries an Earth Observation payload to take pictures and a directive C-band communications antenna for downloading these images to the ground station. For those reasons, attitude and orbit control is very important in the mission when compared to other Cubesat missions. However, the mission has been designed to support a wide range of orbit characteristics in order to accommodate several launching opportunities. Specifications for the orbit height have been made in the range from 400 km to 500 km and the ideal orbit should be circular and polar in order to reach most of the Earth surface with the Geodetic Camera. In addition to these payloads, Politech.1 will also carry an Optical Fiber sensing for temperature monitoring and a NASA experiment called WINCS, to monitor the solar wind and its effect on the ionosphere. The expected life of Politech.1 mission is two years, taking into account that most of the components are not specifically radiation-hardened. The Politech.1 is a three-unit (3U) cubesat. In stowed configuration it complies with the cubesat directives (v.12) and, once in orbit, it deploys three structures: the TTC antennas (2 dipoles, one in UHF band for downlink and other in VHF band for uplink), the tube of the telescope for an EO camera accommodating the secondary mirror, and the dual C-band patch antenna for high data rate downlink. The solar panels are kept in the primary structure; therefore, no further elements protrude the cubesat standard envelope. Propsing to use an AX25 UHF 2-FSK 1k2 downlink @ 700mW and a 5.8GHz high speed 2-FSK downlink @ 115kb Planning to fly on a VEGA mission to 400/500km polar orbit ** Downlink frequencies of 437.200 MHz and 5831.500 MHz have been coordinated**
Application Date: 05 Jun 2013   Freq coordination completed on 11 Jan 2014

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