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Long March 3B launches TJSW -4

17 Oct 2019, 15:37 UTC
Long March 3B launches TJSW -4
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China launched another secretive Tongxin Jishu Shiyan Weixing (TJSW -4) satellite on October 17. The launch took place at 15:21 UTC using the Long March-3B/G2 (Y57) ‘Chang Zheng-3B/G2’ launch vehicle from the LC3 launch complex.

As with the previous launch of Communications Engineering Test Satellites, there is not much information regarding the satellite. When TJSW-1 was launched on September 12, 2015, Chinese authorities said then that the new satellite was a geostationary communications technology test satellite to be mainly used to conduct a test on Ka-band in broadband communication (frequencies between 27 and 40 GHz).
Previous to the launch of TJSW-1, rumors were circling on specialized Chinese space forums that pointed to the launch of the first Great Wall (Changcheng) satellite, a new series of Chinese satellites dedicated to early warning similar to the American Space Based Infra-Red Sensor satellites. Back then, Japan’s Kyodo News reported that China was building a missile defense system to detect a ballistic missile attack. The report was based on Chinese military documents that referred to the development of an experimental early warning satellite program.
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Additionally, the report pointed out that China had ...

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