If someone wants to do this, for the more technical audience there is a selection of better (but still pretty cheap) hardware available e.g. from https://www.r

If someone wants to do this, for the more technical audience there is a selection of better (but still pretty cheap) hardware available e.g. from https://www.rtl-sdr.com/buy-rtl-sdr-dvb-t-dongles/ https://www.rtl-sdr.com/buy-rtl-sdr-dvb-t-dongles/ E.g. you can get an SDR with built-in ADS-B specific low-noise amplifier and SAW filter also for $25. (This can't do general purpose stuff though, unlike the one linked by parent.) Or you can get their general-purpose SDR and their broadband LNA for $40 total.