According to reports in the Chinese medaia (see for example http://www.ccnovel.com/bolan/2019-08-03/133863.html ) the Chinese microsatellite DSLWP-2 which had been orbiting the Moon has now been crashed into it having completed the mission.

This mission included mapping RF interference from the Earth by studying its occlusion by the Moon during lunar orbit.

The Chinese press report that "The main goal of the ultra-long wave detector is to use the lunar natural occlusion of the Earth's radio frequency interference, and to verify the technology of ultra-long wave astronomical observation and solar radiation research. The detector detects the radiation spectrum at different positions of the lunar orbit, acquires the 1-30MHz ultra-long-wave continuum of the lunar orbit, completes the earth radio interference survey, and also carries out various types of moon-covering tests, and carries out various key technologies for payload. verification."

A Figure in this story (which I cannot send to the BB) shows "Distribution Characteristics of Earth's Interference Spectrum in the 1-30MHz Band Obtained by Longjiang No.2"

73 de andy G0SFJ