https://stream.echo6.co/videos/watch/b9b16391-e5ae-4b7b-a64e-9568799c080b In this video, I'll be showing a project called Meshtastic_SDR. This project leverages GNU Radio and a software-defined radio (SDR) to decode Meshtastic messages using a Python-based decoder. You can find the project on GitLab here https://gitlab.com/crankylinuxuser/meshtastic_sdr What is Meshtastic? Meshtastic is a powerful open-source project that enables communication via low-cost LoRa radios. It’s designed for creating mesh networks, allowing devices to relay messages across a wide area without relying on traditional infrastructure. The protocol is perfect for off-grid communication, emergency situations, and hobbyist networking projects. Project Overview: In this video, I demonstrate how to use a flow graph designed specifically for all US-based frequencies with a 250 kHz bandwidth setting using an RTL-SDR. Key Components: GNU Radio: The open-source software toolkit that processes the radio signals., RTL-SDR: The affordable software-defined radio used to capture the signals., Python Decoder: A script that decodes the Meshtastic messages from the radio signals., Technical Details: The flow graph utilizes separate ports on a ZMQ sink for different preset types (e.g., long, fast), allowing the Python decoder to be opened multiple times, each instance pointing to a specific port, facilitating simultaneous decoding of various message types. The AES key of the Meshtastic network is required to decode the messages. Advantages of Using SDR: The major benefit of using an SDR in this setup is its ability to monitor multiple presets at once, unlike traditional Meshtastic equipment, which is usually limited to a single preset. Conclusion: Join me in exploring how this Meshtastic_SDR project can emulate standard Meshtastic equipment, with the added versatility of SDR technology. Whether you're a radio enthusiast, a software developer, or just curious about off-grid communication systems, this project has something to offer. Resources: Meshtastic Project https://meshtastic.org/, Meshtastic_SDR on GitLab https://gitlab.com/crankylinuxuser/meshtastic_sdr, GNU Radio https://www.gnuradio.org/, RTL-SDR https://www.rtl-sdr.com/, WarDragon available here (when in stock): https://cemaxecuter.com/?post_type=product Don't miss out on staying connected: Catch updates on Twitter: https://twitter.com/cemaxecuter Supporting the channel: If you appreciate the value this content brings, I invite you to consider extending your support through Patreon: https://www.patreon.com/cemaxecuter Sun, 26 Apr 2026 17:23:30 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://stream.echo6.co https://stream.echo6.co/client/assets/images/icons/icon-512x512.png https://stream.echo6.co/videos/watch/b9b16391-e5ae-4b7b-a64e-9568799c080b All rights reserved, unless otherwise specified in the terms specified at https://stream.echo6.co/about and potential licenses granted by each content's rightholder.