Tianqin-1
| Tianqin-1  CAS-6 TQ-OSCAR 108 (TO-108)  | 
|
|---|---|
| Type: | Research  satellite Amateur radio satellite Training satellite  | 
| Country: | 
 | 
| Operator: | DFH Satellite Co., Ltd.  Sun Yat-sen University (Guangdong) Central China Science and Technology University CAMSAT  | 
| COSPAR-ID : | 2019-093A | 
| Mission dates | |
| Dimensions: | 35 kg | 
| Size: | 490 mm × 499 mm × 430 mm | 
| Begin: | December 20, 2019, 03:22 UTC | 
| Starting place: | Taiyuan Cosmodrome | 
| Launcher: | Long march 4B | 
| Orbit data | |
| Rotation time : | 97.2 | 
| Orbit inclination : | 98.0 ° | 
| Apogee height : | 642 km | 
| Perigee height : | 662 km | 
Tianqin-1 ( CAS-6 ) is a Chinese microsatellite that serves as a research satellite for the Chinese Gravitational Wave Astronomy Program and also carries a payload for amateur radio communication and training. CAS stands for Chinese amateur radio satellite. The satellite was produced by DFH Satellite Co. Ltd. built in Beijing for Sun Yat-sen University and Central China University of Science and Technology . The satellite consists of a 490 mm × 499 mm × 430 mm cube with solar cells mounted on the surface and has a mass of approximately 35 kg. The payload is a CW telemetry - Bake , a 20-kHz linear transponder in the U / V mode and an atmospheric wind detector. The satellite is three-axis stabilized.
mission
Tianqin-1 was originally intended to be launched the first time a CZ-11H missile was launched at sea, but was not on board. Instead, the satellite was launched on December 20, 2019 on a Langer March 4B launcher from the Taiyuan Cosmodrome together with CBRS-4A and other satellites. 
Alan Kung, BA1DU reported that on June 20, 2020 the VHF / UHF antenna deployed and the linear transponder activated. CW beacon and GMSK telemetry do not work properly due to errors in the on-board computer. The linear transponder was put into operation. 
The OSCAR number administrator of AMSAT - North America has assigned the number 108 to this satellite. The satellite is therefore also called TQ-OSCAR 108, or TO-108 for short, in the amateur radio community.
Frequencies
The following frequencies for the satellite with the callsign BJ1SO have been coordinated by the International Amateur Radio Union :
- 435.270 - 435.290 MHz - Uplink LSB Inverted
 - 145.915 - 145.934 MHz - Downlink USB (power 20 dBm)
 - 145.910 MHz - CW beacon (power 17 dBm) callsign BJ1SO
 - 145.890 MHz - Telemetry AX.25 4.8k Baud GMSK (power 20 dBm)
 
Web links
- CAMSAT CAS-6 Amateur Radio Satellite Launched Successfully (English)
 - CAMSAT CAS-6 satellite launched December 20 (English)
 
Individual evidence
- ↑ Ciprian Sufitchi: CAS March 6, 3, 2020, accessed on February 22, 2020 (English).
 - ↑ Gunter Dirk Krebs: Tianqin 1 / CAS February 6, 10, 2020, accessed on February 22, 2020 (English).
 - ↑ Alan Kung, BA1DU: CAS-6 antenna deployed, transponder activated. June 20, 2020, accessed June 26, 2020 .
 - ↑ Mark Johns: ANS-180 AMSAT News Service Weekly Bulletins for June 28th. June 28, 2020, accessed June 28, 2020 .