CascadiaMesh is a community-built MeshCore network. Volunteers put up solar-powered repeaters, and people join with small companion radios paired to a phone, or with standalone devices. The group runs regional and topic channels and publishes guides on device setup, repeater builds, regions configuration and corridor projects such as its I-5 and 99/91 projects.
The group’s site lists other regional meshes it links with, including Puget Mesh, VashonMesh and Inland NW Mesh.
Before you buy a radio, match the protocol and settings the group publishes; a radio on different settings will not hear the local mesh. Call 911 if you can. Mesh and radio are best-effort backups, and coverage varies with terrain, weather and how many nodes are on the air.