The reverse problem is interesting. Consider Voyager 1- its high gain antenna is pointed essentially directly at the sun, a powerful wide-band noise source. H

The reverse problem is interesting. Consider Voyager 1- its high gain antenna is pointed essentially directly at the sun, a powerful wide-band noise source. How does it detect anything from earth? The DSN has to outshine the sun within the tiny S-band window that Voyager listens to: 20 kW and 62 dB antenna gain. https://descanso.jpl.nasa.gov/DPSummary/Descanso4--Voyager_ed.pdf https://descanso.jpl.nasa.gov/DPSummary/Descanso4--Voyager_e... https://ipnpr.jpl.nasa.gov/progress_report/42-175/175E.pdf https://ipnpr.jpl.nasa.gov/progress_report/42-175/175E.pdf