Chinese Long March 3B launches Tongxin Jishu Shiyan Weixing (TJSW)
February 4, 2021
China launched another secretive Tongxin Jishu Shiyan Weixing (TJSW) satellite on 4 February. The launch took place at 15:36 UTC using the Chang Zheng-3B/G2 (known as the Long March 3B/G2 outside of China) launch vehicle from launch site LC3 at the Xichang Satellite Launch Center.
Originally, it was reported the launch would orbit a satellite on the Tianhui series and carrying a Synthetic Aperture Radar, or SAR, antenna to geosynchronous orbit. But a few hours before the launch, reports changed to indicate that the cargo onboard would be another experimental communications system on the TJSW series.