I’ve got one SDR reading air and VHF, one reading 1090 ADS-B, one on 433MHz reading weather stations, temp sensors, tire pressure modules, lots of stuff; finally a fourth one picking up local 70cm and 2m traffic. Oh and a GPS puck providing a stratum 1 time server. Lots of stuff to do and lots of exploring around your local bands.

Claude is surprisingly good at mapping out complex multi-repeater trunking systems, and identifying DMR vs P25 vs NXDN signals, so even if you know nothing about digital radio, you can be listening in minutes.