03/03/2021
Members of Germany's AMSAT organization, AMSAT-DL, in cooperation with the Sternwarte Bochum Institute in Bochum, Nordrhein-Westfalen, Germany, have been using the institute's 20-meter (65.6-foot) diameter dish antenna to listen directly to signals from probes in Mars orbit.
Signals have been copied from the Chinese Tianwen-1 and the Hope Emirates Mars Mission (EMM) spacecraft now orbiting Mars and transmitting in the 8.4 GHz band.
Recordings[1] of the signals can be heard on YouTube with regular updates by following @amsatdl on Twitter.
In 2003, radio amateurs added phase-locked receivers in the 2.3, 5.8, and 10.4 GHz amateur bands, as well as an 8.4 GHz receiver. There is also an S-band 2.4 GHz amateur transmitter running 250 W PEP (peak envelope power). In 2006, the dish was used to copy signals from Voyager 1 at a distance of nearly 15 billion kilometers (9.3 billion miles). - Thanks to AMSAT News Serviceÿ
[1]
https://www.youtube.com/watch?v=413DdMua8ec&feature=emb_imp_woyt
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