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Interference and Noise at 915 MHz The 902 - 928 MHz ISM (Industrial, Scientific, and Medical) band is shared with a wide variety of devices that can interfere with LoRa mesh operation. Understanding who shares this band, how their signals manifest, and how to ...

What Is a Hop? A hop is a single radio transmission between two adjacent nodes. When a message originates at Node A and is received by Node B, that is one hop. If Node B re-transmits the message and Node C receives it, that is a second hop. Each re-transmissi...

Link Budget Through Multiple Hops In a multi-hop chain, each individual link (hop) must have a positive link margin. Unlike a wired network where signal is regenerated cleanly at each switch, a LoRa repeater decodes the incoming RF signal and re-transmits at ...

Choosing your first LoRa mesh node is one of the most important decisions you will make as a new mesh networking enthusiast. The wrong board can mean weeks of frustration with driver problems, dead-on-arrival USB chips, or - most painfully - discovering that y...

A portable LoRa mesh node needs to fit in your pocket, run for a full day on battery, display incoming messages without requiring your phone, and work reliably in the field. This page compares the top portable options and helps you match hardware to your speci...

A fixed repeater node has one job: forward mesh packets reliably, indefinitely, with as little power consumption as possible. This page covers the hardware decisions that matter most for solar-powered or battery-backed repeater deployments. The Core Decision:...

Two microcontroller platforms dominate the LoRa mesh hardware landscape: Espressif's ESP32 family and Nordic Semiconductor's nRF52840. Both are capable, both are well-supported by Meshtastic and MeshCore firmware, and both commonly pair with the SX1262 (and re...

Frequency Bands Explained: 915 MHz vs 868 MHz vs 433 MHz The single most common source of frustration for new LoRa mesh users - and the most easily avoided - is buying hardware on the wrong frequency band. A 868 MHz device purchased on AliExpress will not comm...

The antenna is one of the most important factors in the range and reliability of a LoRa mesh node, alongside spreading factor and transmit power. (Spreading factor in particular changes the link budget by 15-20+ dB across SF7-SF12, which often outweighs the fe...

GPS in a LoRa mesh node serves two primary purposes: precise location sharing with other mesh users (visible on the Meshtastic map or MeshCore position view), and network topology visualization. Whether you need GPS depends heavily on your use case - and wheth...

LoRa mesh networks provide a resilient communications layer for neighborhood watch programs and community safety initiatives - one that works when cellular towers are congested or offline. Keep in mind that mesh is best-effort, short-text, and range-limited: i...

Large outdoor events - music festivals, county fairs, sporting events, religious gatherings - are a scenario where mesh networking can help and where cellular networks often struggle. Tens of thousands of people in one area can saturate cell towers, making cal...

Rural landowners with large properties - farms, ranches, hunting leases, vacation cabins - face a common problem: no cellular service beyond the main building, meaning no communication across the property and no remote monitoring of gates, water tanks, or equi...