IARU Amateur Satellite Frequency Coordination

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BY70-8 Updated: 14 Oct 2022   Responsible Operator Zhenyu Chen BG1ESR
Supporting Organisation International Cooperation Center of China Aerospace  
Contact Person bi1rg@bi1rg.space.nospam  
Headline Details: A 27kg satellite 450x436x212mm. BY70-8 is a small satellite designed by Engineering Team of International Cooperation Center of China Aerospace, Reger Technology and the student from Nanjing Vocational Institute of Mechatronic Technology. The target is to have the amateur radio in the space and educational program with broad vocational students. The space amateur radio station will provide  the VHF telecommand downlink.  UHF telemetry uplink.  V/U NBFM transponder.  X band image/voice data downlink experiment. The X band image/voice data downlink will be controlled through the UHF public telecommand channel. The educational mission includes:  The photographic capture on the orbit.The BY70-8 will use SDR based transceiver to provide communication and experiment resources to radio amateurs, including a V/U digital transponder, a VHF telemetry downlink and a X-band image/voice downlink for experimentation. The satellite will also provide an open telecommand to allow radio amateurs to send commands to control the satellite to obtain the orbit camera images, and the voice recorder data from V/U transponder. Proposing a U/V FM transponder and telemetry on VHF using 9k6 GMSK. Image data downlink on X Band using 10m or 1M QPSK with convolutional coding. Planning a launch in Q4 2023 from Wenchang into a 350km circular orbit at 41.5 degree inclination. Link budgets are here https://bi1rg.github.io/posts/by70-8/ and more info is here https://bi1rg.github.io **FM transponder downlink on 145.950 MHz, TLM downlink on 145.965 MHz, voice and image downlink on 10480.00 MHz have been coordinated together with the FM transponder uplink on 435.950 MHz.**
Application Date: 13 Sep 2022   Freq coordination completed on 14 Oct 2022

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