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Operating LoRa mesh equipment in the United States requires compliance with FCC Part 15 rules. This page summarizes the relevant regulations and explains how to calculate whether your installation is within limits. Disclaimer: This page is a general referenc...

MeshCore encrypts all message payloads using AES-256-CTR. Understanding how this works helps you make informed decisions about what to transmit over the mesh and how to configure private channels. What is encrypted All direct messages (DMs): Encrypted end-...

MeshCore is an open-source project with a distributed community and a governance structure that changed significantly in April 2026. Understanding the project landscape helps you navigate firmware choices and community resources. The April 2026 governance spl...

A systematic approach to diagnosing MeshCore repeater issues. Work from the physical layer up: radio first, then configuration, then network behavior. Quick pre-diagnosis checklist Is the device powered? (check LED, screen, or measure supply voltage) Is ...

When a MeshCore repeater becomes unreachable, misconfigured, or boot-loops, reflashing is the recovery option. This page covers reflash procedures for all common device families. When to reflash vs. when to reconfigure SymptomTry firstIf that fails Node wo...

A link budget calculation estimates whether a radio path between two nodes will work reliably before you deploy hardware. It’s the single most useful tool for avoiding wasted installation trips and surprised failures. The link budget equation Received Power (...

Several free tools can help you model coverage and plan repeater placement before deploying hardware. Using these tools can save wasted trips and help you choose between candidate sites. HeyWhatsThat (heywhatsthat.com) The fastest tool for estimating radio ho...

When buying LoRa hardware, listings frequently mention specific radio chip models. Understanding what these chips are and how they differ prevents costly purchasing mistakes. Why the chip matters The LoRa transceiver chip is the core radio hardware. It determ...

Many Meshtastic users don't realize a full web-based interface is available in addition to the mobile app. The web interface provides additional tools for configuration and administration that aren't available in the app. The Meshtastic web app (app.meshtasti...

Meshtastic’s module configuration system enables advanced features beyond basic mesh communication. This page covers the most commonly needed modules and their key settings. Range Test Module Automates systematic coverage testing by sending timed packets that...

Wildfires create some of the most challenging communication environments: rapidly changing conditions, disrupted infrastructure, and urgent coordination needs across large areas. LoRa mesh is increasingly used for both community alerting and field operations. ...

Major earthquakes cause cascading infrastructure failures within minutes: power out, cell towers down, roads blocked. A pre-deployed mesh network provides an immediate communication layer requiring no external infrastructure to function. The critical first 72...

Floods, hurricanes, tornadoes, and severe winter storms each create different communication challenges. This page covers how mesh networks support response operations across severe weather scenarios. Flood-specific considerations Equipment waterproofing Wate...

The most effective community mesh deployments are integrated with existing emergency communication structures — Amateur Radio Emergency Service (ARES), Community Emergency Response Teams (CERT), and local emergency management agencies. This page covers how to ...

A mesh communications go-bag is a pre-configured kit that can be grabbed and deployed within minutes. For emergency communicators, this preparation is as important as the hardware itself. Individual go-bag (personal responder) Minimum kit for a personal mesh ...

Overview The TTGO/LilyGO T-Beam is one of the most popular all-in-one LoRa mesh boards available. A single PCB integrates an ESP32 microcontroller, an SX1262 LoRa radio, a GPS module, and an 18650 Li-ion cell holder with onboard charging — making it an excelle...

Overview The Heltec LoRa 32 is a compact, low-cost development board combining an ESP32 microcontroller, an SX1262 LoRa radio, and a small 0.96" OLED display on a single board. Its built-in display makes it particularly useful for field deployment and diagnost...

Overview The RAK WisBlock system is a modular hardware platform built around small snap-together modules. For LoRa mesh applications, the core build consists of: RAK4631 Core Module — Contains a Nordic Semiconductor nRF52840 microcontroller and a Semtech SX...