Receiving Station MA3065SWL using SDR: R820T & SLX1P, Antenna: 144/145MHz HB9CV Yagi beam: Tuned 143.049MHz
Software to monitor frequency is DL4YHF's Amateur Radio Software: Audio Spectrum Analyzer ("Spectrum Lab")
Listening to signal reflection scatter from G-r-a-v-e-s Space Radar 143.049MHz