General Questions

Do I need a license to use LoRa mesh?

No license is required. Both MeshCore and Meshtastic operate on the 915 MHz ISM (Industrial, Scientific, and Medical) band in the US and Canada. ISM bands are unlicensed — anyone can use compliant equipment without registration or testing. This is the same reason Wi-Fi and Bluetooth don't require a license.

The equipment must comply with FCC Part 15 (US) or Industry Canada RSS-210/247 (Canada). All certified hardware sold commercially meets these standards. If you build a custom unit, you're responsible for compliance with power limits and EIRP rules.

Will this work if there's no internet or cell service?

Yes, that's the point. LoRa mesh nodes communicate directly with each other via radio. No internet, no cell towers, no infrastructure of any kind is required. The only thing needed is that nodes be within radio range of each other (directly or via multi-hop through the mesh).

Some nodes are connected to internet gateways (room servers with internet backhaul), which allows messages to bridge to the internet — but nodes work perfectly well without any of this.

What's the difference between MeshCore and Meshtastic?

Both are free, open-source LoRa mesh networking platforms. They cannot interoperate — different packet formats and routing protocols. Key differences:

• Routing: MeshCore uses path-discovery routing (more efficient at scale); Meshtastic uses flooding (simpler, works well for small networks)
• Encryption: MeshCore uses AES-256-CTR (always on); Meshtastic uses AES-128-PSK per channel
• Community: Meshtastic has a larger global community; MeshCore has strong North American regional networks (CascadiaMesh, WCMesh, RegionMesh, NoDakMesh)
• Apps: Meshtastic has a polished official app; MeshCore has three app options including the free open-source MeshCore Open

See the MeshCore vs. Meshtastic: Which to Choose page for a full comparison.

Can I use the same hardware for both protocols?

Yes, in most cases. Many common LoRa boards (Heltec V3/V4, T-Echo, T-Beam, RAK4631, etc.) support both MeshCore and Meshtastic firmware. You flash one at a time — a device runs one protocol at a time. Switching protocols requires reflashing.

Some newer boards have MeshCore support added after Meshtastic. Always check the current compatibility list for the firmware you want to run.

How far can the signal reach?

Range depends heavily on terrain, antenna height, and what's between nodes. Rough guidelines:

• Ground level, urban environment: 0.5–2 miles
• Rooftop to rooftop: 3–10 miles
• Hilltop to ground: 5–25 miles
• Hilltop to hilltop (clear line of sight): 20–80+ miles
• Dense forest: 0.5–1.5 miles

The single most important factor is antenna height. A node 100 feet above the ground sees dramatically farther than one at ground level, regardless of antenna quality.

Does LoRa mesh replace a walkie-talkie or CB radio?

It depends on your use case. LoRa mesh doesn't do voice — it's text and data only. It excels at things radios can't do: group messaging, GPS position sharing, message logging, and multi-hop relay across long distances. Many operators use both: walkie-talkies for real-time voice coordination, mesh for group situational awareness and position tracking.

What's a "repeater" and do I need one?

A repeater is a fixed, always-on node that receives messages from other nodes and re-transmits them, extending the effective range of the mesh. In a small group (2–5 people) within direct range of each other, you don't need a repeater. Once your group wants to communicate across distances beyond direct node range, or when you want to connect with others who aren't in your immediate area, repeaters make the network dramatically more useful.

Community networks (CascadiaMesh, RegionMesh, etc.) have deployed repeaters so that individual users can connect to a city- or region-wide mesh without needing their own repeater infrastructure.

Is this legal in other countries?

Rules vary significantly. 915 MHz hardware is specifically designed for the US/Canada ISM band (902–928 MHz). In Europe, the 868 MHz band is used instead (863–870 MHz). Hardware sold for the US market usually cannot legally operate in Europe and vice versa — this is a hardware RF front-end difference, not just a software setting.

Before operating in any country, verify that: (1) 915 MHz or 868 MHz hardware is authorized, (2) your transmit power and bandwidth are within local limits, and (3) the band is available for unlicensed ISM use. Consult your local telecommunications regulator.