IARU Amateur Satellite Frequency Coordination

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Stars-AO Updated: 28 Jun 2017   Responsible Operator Masahiro Nohmi JJ5FFH
Supporting Organisation Shizuoka University  
Contact Person nomi.masahiro@shizuoka.ac.jp.nospam  
Headline Details: We have acted to our target to transmit rapidly and efficiently the astronomical image to earth station by CubeSat. This action may be expected the increasing of transmission data volume by CubeSat. It is equipped with super high sensitivity camera WAT-910BD made in WATEC and performed communication with earth station by transceiver on 115.2 kbps transmission rate. Microsatellite is limited power consumption. Therefore, in order to enable high speed transmission with low transmission power, it will be performed advanced error correction. At the earth station, data is received by SDR and PC. Furthermore, data may be received at general amateur station. We try high speed data transmission which has never been before. High speed transmission is enable by diffusion of inexpensive SDR receiver and software in recent years. We provide new challenging opportunity for amateur radio operators through the technology of receiving weak radio wave from space and advanced tracking of satellites. We evaluate its superiority with regard to transmission rate (1200 ~ 9600 bps) which is mainly used by amateur radio transmission. Proposing also a GMSK 115kbps GMSK UHF downlink using AX25 and LDPC. Planning a launch from Tanegashima Space Center in 2017 to a 613km SSO orbit together with AUTcube2, Aichi University of Technology PROITERES 2, Osaka Institute of Technology Tenkou, Kyushu Institute of Technology NSOP-1, UAE. **Downlinks for CW/telemetry 437.350 MHz, for AFSK 437.400 MHz and for high speed 437.200 MHz have been coordinated**
Application Date: 03 Jun 2017   Freq coordination completed on 28 Jun 2017

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