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/...
GQRX: https://www.gqrx.dk
GNU Radio: https://www.gnuradio.org
Meshtastic_SDR: https://gitlab.com/crankylinuxuser/me...
cemaxecutor's video on Meshtastic decoding:    • WarDragon Real-Time Decoding Meshtastic w/...  

Blog post with more details on my journey and how to replicate my experiments on a Pi: https://www.jeffgeerling.com/blog/202...

And here are my daily vlogs from Open Sauce 2025:

Day 0:    • Open Sauce 2025 vlog: Day 0 (Preview night)  
Day 1:    • Open Sauce 2025 vlog: Day 1 (People, Proje...  
Day 2:    • Open Sauce 2025 vlog: Day 2 (world record ...  

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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