IARU Amateur Satellite Frequency Coordination

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KITSUNE Updated: 05 Jun 2020   Responsible Operator Daisuke Nakayama JG6YBW
Supporting Organisation Kyushu Institute of Technology  
Contact Person o108074d@mial.kyutech.jp.nospam  
Headline Details: KITSUNE is a 6U CubeSat with external dimensions of 100mm×200mm×300mm and an approximate mass of less than 14kg. Mission 01: High resolution camera mission The camera payload onboard KITSUNE satellite will capture 5 meter-class resolution images. KITSUNE satellite will use attitude determination and control system to aim the camera payload to capture 5 images around a target. During the next pass, by UHF uplink command, images will be downlinked over C-band communication. If C-band communication fails, UHF downlink will be used for images as well as telemetry. Mission 02: C-band communication demonstration mission The C-band communication board on KITSUNE satellite will demonstrate up to 20Mbps amateur high-speed data downlink. Mission 03: C-band mobile ground station mission A C-band mobile ground station is being developed as an independent system from the main ground station. Mobile ground station will uplink a command to the small 2-megapixel camera onboard the satellite to take 2 megapixel compressed images and downlink immediately. The objective is to demonstrate downlink speed up to 1Mbps over C-band to the mobile ground station. The mobile ground station will use the same frequencies as the main ground station. Mission 04: Total Electron Content Measurement Mission (mission without amateur link involvement) KITSUNE satellite carries a chip-scale atomic clock. It will be used to detect the time delay between uplink command sent from the ground station and receiving time on the satellite side. The ground station will send dummy data over 450MHz spread-spectrum signal, and it will record the time of the signal transmission at the ground station. KITSUNE satellite will receive this signal over software defined radio (SDR) and record the receiving time by using GPS time and chip-scale atomic clock. Recorded transmission times will be sent over 450 MHz UHF communication uplink. The time difference will be used to calculate total electron content of ionosphere onboard. UHF non-amateur downlink (400.960 MHz ) will be used to downlink the scientific data and telemetry. Mission 05: Store and Forward Mission (IoT Mission) (mission without amateur link involvement) KITSUNE satellite has a LORA device onboard as a receiver. There will be fixed and mobile ground sensor terminals with LORA devices. They will collect sensor data (temperature, humidity, gps location etc.) and transmit the data over 400MHz and 433MHz ISM band non-amateur frequencies. KITSUNE satellite will collect the data from the ground sensor terminals and downlink to the main ground station over 400.960 MHz non-amateur data downlink. First ground sensor terminal will be set up in Kyushu Institute of Technology campus. Planning a launch during 2020 to the iSS. More info https://kitsat.net/kitsune/ **The following frequencies have been coordinated • 437.375 MHz CW beacon and HK data using 4k8 GMSK• 5840.000 MHz CW beacon and Image download using QPSK at 10/20 Mbps or BPSK at 100k/5 Mbps or GMSK using 4k8 bps also an uplink on 5658.000 MHz with emission designator 10K0F1D for camera activation by amateurs** More info from https://kitsat.net/kitsune/
Application Date: 12 Apr 2020   Freq coordination completed on 01 Jan 1970

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