I'm not the GP, but for my ads-b decoder, it runs on a Pi Zero 2W, which at the time cost under $15 and draws very little power. It's convenient having the computer right next to the antenna to avoid thinking about cables. Runs for a couple days on 100Wh of backup battery.

(I personally find a ton of value out of the Pico and the zero, and less out of the main main, higher powered raspberry Pi line)