Updated: April 27, 2025
Uplink: 435.270-435.290 MHz (LSB/CW) Bandwidth 20 kHz
Downlink: 145.935-145.915 MHz (USB/CW)
Beacon: 145.910 MHz CW
GMSK Telemetry: 145.890 MHz 4800bps
TO-108 (CAS-6) (Chinese Amateur Radio satellite 6) is a Chinese technology development microsatellite for China’s gravitational-wave-astronomy program, which carries a subpayload for amateur radio communication and education. It was launched on December 20th 2019 on a CZ-4B launch vehicle from the Taiyuan Satellite Launch Center, China, into a SSO orbit with an apogee of 629km and inclination of 97.9 degrees. The satellite was built by DFH Satellite Co. for Zhongshan Daxue (Sun Yat-sen University) and Huahzhong U. of Science and Technology. It features a 490 mm × 499 mm × 430 mm cubic body with body mounted solar cells and a mass of approximately 35 kg mass. The payload is a VHF CW Telemetry Beacon, a U/V Mode 20 kHz Linear Transponder and an atmospheric wind detector. It features a three-axis stabilization system.
TO-108 (CAS-6) was first time activated on June 20th 2020. The call sign is BJ1SO. Presently the transponder operates with about 2 seconds on , 5 seconds off. Investigations for the root cause are ongoing.
Other info:
- https://www.n2yo.com/satellite/?s=44881
- https://db.satnogs.org/satellite/VMQF-4924-7475-1891-3199
- https://www.dd1us.de/spacesounds%202i.html
- https://www.amsat.org/wordpress/wp-content/uploads/2019/12/CAMSAT-News-Release-for-CAS-6-Satellie.pdf
- https://www.amsat.org/wordpress/wp-content/uploads/2019/12/CAS-6-CW-Telemetry-Encoding-Format.pdf
- https://www.amsat.org/wordpress/wp-content/uploads/2019/12/CAS-6-Satellites-Digital-Telemetry-Description.pdf