What it is
Meshtastic is free, open-source firmware for inexpensive LoRa radios. It turns them into a text-messaging mesh that works without cell service or internet. It’s maintained by a volunteer community and used by hikers, farmers, event organizers and a growing number of towns.
What it costs
The software is free. Radios range from about $30 for a bare board to a few hundred dollars for a finished handheld or solar relay. A town network’s cost is mostly relays, mounts and the work of siting and installing them; see our pricing.
Range
Range depends on height and terrain more than anything else. Ground-level radios in town may reach a few blocks; rooftop relays reach a mile or more; a relay on a water tower can cover a small town. Because messages hop, a network’s reach is the sum of its relays.
Security
- Private channels are encrypted with AES-256, using a key you control.
- The default public channel uses a widely known key, so treat it as public.
- Radios can be managed remotely with admin keys.
Limits to plan around
- Short text only, roughly 200 characters.
- Low data rate: a busy channel slows down.
- Not a replacement for 911 or public safety radio.
Licensing
In the US, Meshtastic runs license-free on the 902–928 MHz band. More on licensing.
Common questions
Is Meshtastic free?
Yes. The firmware and phone apps are free and open source; you buy the radios.
Can residents use radios they already own?
Yes. Any Meshtastic radio set to the US region can join a town’s public channel.