LoRa Mesh Networking
Meshtastic
A license-free mesh messaging network built on cheap, long-range LoRa radios. No amateur radio license, no monthly fee, no cell signal required — just a small device and a mesh of other people running the same thing.
Network
Off-Grid, No Internet Required
What Meshtastic actually is
Meshtastic is open-source firmware that turns small, inexpensive LoRa radios into a self-forming mesh network. Each device relays messages for its neighbors automatically, so a text message can hop node to node well beyond the range of any single radio — all without a license, a cell tower, or an internet connection.
That's the key difference from AREDN: Meshtastic trades AREDN's high bandwidth for zero licensing requirements and much longer range per node on very little power. It's not a replacement for AREDN, it's a different tool — short text messages and position sharing over a wide area, rather than video, voice, and full network services.
No license needed, for anyone. Buy a device, turn it on, and you're on the mesh — transmitting included. This is one of the most approachable ways to try wireless mesh networking before ever touching amateur radio.
Local channels
- LongFast (public default) — every Meshtastic device ships on this channel out of the box, with a publicly known key. It's how new devices discover each other, and it's what makes the local mesh "just work" without any configuration.
- IROMesh (optional) — a statewide community channel run by IowaMesh.net, bridging distant nodes across Iowa over MQTT for extra regional reach. This isn't the standard way Meshtastic works — the regular mesh is fully off-grid with no internet involved at all — IROMesh is just an optional add-on if you want wider linking. Add it from their official getting started guide.
- Private channels — some local groups also run their own encrypted channels for group-specific traffic. Ask around locally if you're looking to join one.
Getting started
- Get a device. Any Meshtastic-compatible LoRa radio works — nRF52-based devices are more power-efficient for portable use, while ESP32-based devices (with WiFi) are needed if you want to bridge to MQTT. US devices need the 915 MHz band.
- Flash it. The Meshtastic web flasher installs the firmware directly from a browser — no separate software needed.
- You're already on LongFast. That's the default — no setup required. Add IROMesh afterward if you want the wider statewide reach.