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