Introduction to Emergency & Off-Grid Communication
What emergency communication is, why it matters, and how to build it — mesh networks, community radio, and off-grid links — for any community, anywhere in the world.
What is resilient communication?
Emergency communication means having ways to stay in contact when normal infrastructure fails. Cell towers go dark. Fiber cables get cut. Internet services go offline. Power grids collapse. These are not hypothetical scenarios: they happen in every major disaster, and they happen fast.
Communities that fare best are those that built their own communication paths beforehand: paths that don't depend on the same infrastructure that just failed. This means mesh network setup, community radio networks, satellite links, and practiced plans. None of it requires technical expertise to start.
The core idea is independent paths: multiple ways to communicate that don't share the same power source, the same tower, the same fiber route, or the same point of failure.
Who this site is for
Neighborhood organizers
Who want their block or street to stay connected if the grid goes down.
Volunteer team leads
Running search and rescue, CERT, mutual aid, or disaster relief groups.
Emergency managers
Looking to build or improve their community's backup communication plan.
Community network builders
Deploying mesh or radio infrastructure at town or city scale.
Curious beginners
Who heard about Meshtastic or ham radio and want to understand the bigger picture.
What you need to get started
No prior radio or networking experience
This site is written for people starting from zero.
A few hours to read and plan
The foundational pages take about 30 minutes. A real deployment takes weeks.
A modest budget (or none to start)
You can read and plan for free. Entry-level hardware starts under $50.
At least one other person
Resilient communication is a community practice, not a solo one.
How this site is organised
The site is split into two halves: Learn and Apply.
Learn
- Why Comms FailThe seven ways infrastructure breaks. Start here.
- The Resilience StackA seven-layer model for understanding your options.
- TechnologiesMesh networks, radio, satellite: costs, ranges, tradeoffs.
- AI & AgentsHow AI agents communicate over radio and mesh when internet fails.
Apply
- PlaybooksStep-by-step guides matched to your scale and situation.
- Case StudiesReal deployments: what worked and what didn't.
- ResourcesStarter kits, tools, and organisations to get involved with.
Ready to start? Read Why Comms Fail →
Already know the basics? Go straight to the playbooks →
Unfamiliar with a term? Check the glossary →
Want to contribute or read the disclaimer? About this project →