XiWang-2B
| XiWang-2B  CAS-3B  | 
|
|---|---|
| Type: | Amateur radio satellite | 
| Country: | 
 | 
| Operator: | CAMSAT | 
| COSPAR-ID : | 2015-049N | 
| Mission dates | |
| Dimensions: | 10 kg | 
| Size: | 246 mm × 246 mm × 246 mm cubes | 
| Begin: | September 9, 2015, 23:01 UTC | 
| Starting place: | Taiyuan Cosmodrome | 
| Launcher: | Long March 6 | 
| Orbit data | |
| Rotation time : | 95.0 minutes | 
| Orbit inclination : | 97.5 ° | 
| Apogee height : | 536.1 km | 
| Perigee height : | 515.1 km | 
XiWang-2B , or XW-2B for short , also CAS-3B , is a Chinese microsatellite that is used for experiments on the physics of the thermosphere and is an amateur radio satellite . XiWang is Mandarin and means "hope". CAS stands for "Chinese amateur radio satellite". This satellite was developed by the Chinese amateur radio satellite group, CAMSAT.
The XiWang-2B (CAS-3B) satellite is identical to the XiWang-2C (CAS-3C) and XiWang-2D (CAS-3D) satellites .
mission
The satellite was launched on September 19, 2015 on a Long March 6 launcher from the Taiyuan Cosmodrome in China together with 20 other small satellites, including nine other satellites from the CAS 3 series. An orbital lifespan of 9.2 years is expected.
Frequencies
The following frequencies for the satellite with the callsign BJ1SC have been coordinated by the International Amateur Radio Union :
- 435.090 MHz - 435.110 uplink
 - 145.570 MHz - 145.730 downlink (power 20 dBm)
 - 145.725 MHz CW beacon (22 wpm / power 17 dBm)
 - 145.705 MHz digital telemetry 9k6 / 19k2 GMSK (power 20 dBm)
 
Individual evidence
- ↑ Ciprian Sufitchi: XW-2B. August 4, 2019, accessed August 5, 2019 .
 - ↑ Trevor Essex, M5AKA: New XW-2 satellites - linear transponders active. September 20, 2015, accessed August 5, 2019 .
 - ↑ Alan Kung, BA1DU: XW-2 (CAS-3) Satellites Frequency Allocation1XW-2 (CAS-3) Satellites Frequency Allocatio. August 1, 2015, accessed August 5, 2019 .