Four layers of communication
| Layer | What it uses | Range | What it carries |
|---|---|---|---|
| 1. City nodes | Provider networks without internet access | Whole city | Everything within the city |
| 2. Wi-Fi mesh | Ordinary routers at "resilience points" — shelters, schools, help centers | Block–district | Everything, including calls |
| 3. Radio links | Directional radio modems with line of sight | 10–20 km | Everything, including calls |
| 4. LoRa | Low-cost radio modules | 1–10+ km | Short text only |
For people it's the same Nevod: the app picks whatever path is available.
A resilience point
A set of low-cost, off-the-shelf equipment: a few routers with open firmware, a small node server, backup power and, where needed, a radio link to other districts and a LoRa module for short texts. Nothing needs inventing.
How to start
We offer cities a pilot in one district: several interconnected resilience points, tested for messages and calls with no internet at all. The outcome is a report and a deployment plan. Contact: support@nevod.network.
Any transmitter can be direction-found, so installation sites are chosen with care, and message content is protected by end-to-end encryption on every layer. The ZKI architecture holds here too: the city network's operator has no access to the content.