IARU Amateur Satellite Frequency Coordination

Back to List of Sats whose Frequencies have been coordinated

ZA-AeroSat Updated: 22 Jan 2017   Responsible Operator Willem Steyn ZS1SUN
Supporting Organisation QB50 & Stellenbosch University  
Contact Person whsteyn@sun.ac.za.nospam  
Headline Details: A 2U spacecraft: The main objectives of the mission is: - To comply with the QB50 mission objective of doing atmospheric research measurements in the lower thermosphere - To demonstrate passive aerodynamic stabilization of a CubeSat using its antennas as aerodynamic feathers - To provide a training/educational opportunity for young engineers and post graduate students by including them in the design, assembly, and operations of a satellite. - To provide ESL-built components flight heritage The satellite will use magnetic sensors and actuators to do initial detumbling into a Y-Thompson spin after release from its deployer. After a set time after release, all deployables, including the antennas, will deploy. The satellite will then start transmitting a beacon, and start listening for communication from a groundstation. When the appropriate command is received, the satellite will activate its full suite of sensors and actuators to orientate itself in the RAM direction. During this process the spin the satellite contains in the Y-axis, is absorbed into a momentum wheel, which then provides the stabilized satellite with a momentum bias. At this point the QB50 science payload will be activated and occasionally the payload star camera will be tested. In the case of a fault in the communications is detected throughout the mission, the secondary communications unit will be activated. Science data, telemetry data, as well as images captured by the star and Nadir cameras will be sent to the ground station with each communications opportunity. Proposing a UHF downlink using either 1k2 AFSK or 9k6 GMSK and also an S Band 40MHz spread spectrum GAMANET system. ** Downlinks on 437.195 MHz and 2405 MHz have been coordinated** ** Downlink frequency has been updated to 437.200 MHz**
Application Date: 18 Oct 2013   Freq coordination completed on 07 Apr 2015

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