Hacking Meshtastic with a Raspberry Pi and GNU Radio

Can I decode other people's messages using a Raspberry Pi and some open source SDR software? Mentioned in this video (some links are affiliate links): - Nooelec HackRF One: https://amzn.to/4ojyQUj - Argon ONE UP Pi Laptop: https://www.kickstarter.com/projects/argonforty/upton-one-the-true-raspberry-pi-compute-module-5-laptop - GQRX: https://www.gqrx.dk - GNU Radio: https://www.gnuradio.org - Meshtastic_SDR: https://gitlab.com/crankylinuxuser/meshtastic_sdr - cemaxecutor's video on Meshtastic decoding: https://www.youtube.com/watch?v=L1VgO1OZWbs Blog post with more details on my journey and how to replicate my experiments on a Pi: https://www.jeffgeerling.com/blog/2025/decoding-meshtastic-gnuradio-on-raspberry-pi And here are my daily vlogs from Open Sauce 2025: - Day 0: https://www.youtube.com/watch?v=PQWQQJ_izac - Day 1: https://www.youtube.com/watch?v=95Ec_XZBFMU - Day 2: https://www.youtube.com/watch?v=hD9iNjhIc_w Support me on Patreon: https://www.patreon.com/geerlingguy Sponsor me on GitHub: https://github.com/sponsors/geerlingguy Merch: https://www.redshirtjeff.com 2nd Channel: https://www.youtube.com/@GeerlingEngineering 3rd Channel: https://www.youtube.com/@Level2Jeff Contents: 00:00 - Hacking RF 01:35 - Setbacks and modding my T-Deck 02:57 - GNU Radio for custom SDR 05:23 - Monitoring air traffic at the airport 06:46 - ADS-B and Meshtastic from 40,000 ft 08:56 - Hack the RF at Open Sauce 10:35 - Omaha contacts on the return flight