Meshtastic is an open source, off-grid, decentralized, mesh network built to run on affordable, low-power devices using LoRa technology. At the July 2024 KARC meeting, we had a presentation by David Waller, KG7NCV. David is deploying the Meshtastic network in the Mesa, AZ area. Information on this project is described here:
Catalog of Meshtastic equipment
At the August 2024 KARC meeting, Matt Lunati, N7OEI, described his recent activity with the Meshtastic network and demonstrated a small (2.0″ width) Heltec network transceiver. It connects via bluetooth to a phone or tablet, and provides access to the mesh network.