Building an ADS-B Receiver For Less Than You Think hackaday.com

Maker [thefatmoop] built an ADS-B receiver for under $50 using a Meshnology W12 board with an ESP32-S3 and LR2021 radio, which captures 1090 MHz aircraft signals and displays tracks on a web interface. With a 915 MHz antenna and modified filter settings, the rig reportedly receives aircraft from up to 150 nautical miles away.