MeshCore Repeaters
The backbone of the mesh network
What does a repeater actually do?
A repeater receives messages and forwards them to the next node toward the destination. Without repeaters, only nodes that can directly reach each other can communicate. With repeaters, you hop over obstacles and distances.
A repeater is a MeshCore node that runs 24/7 and forwards messages. Unlike some other mesh systems, MeshCore doesn't blindly forward every packet - it routes intelligently to the destination. This makes the network more efficient.
Types of repeaters
Repeater
The standard option. Forwards messages between nodes. No chat function, purely a relay. Ideal for attics or outdoor locations.
Room Server
A chatroom that's online 24/7. People can leave messages that others pick up later. Useful as a central point for a community.
Room-Peater
Combination of both: a Room Server that also forwards messages. Two birds with one stone, but uses more bandwidth.
Why run a repeater?
Extend the range
A repeater at height can make the difference between 500 meters and 5 kilometers of range for everyone nearby.
More robust network
More repeaters means more routes. If one path fails, messages automatically find another way.
Help the community
Your repeater helps everyone in the area. You directly contribute to a network that works without internet.
Set and forget
Once set up, a repeater runs autonomously. With solar power, it can run for months or years without attention.
The perfect location
Height and clear line of sight are everything with radio waves:
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Attic or top floor
Already better than the living room. The higher in the building, the further your range.
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Roof or balcony
Ideal if you use weatherproof housing. Avoid metal obstacles directly next to the antenna.
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High-rise apartment
Live on the 8th floor? Jackpot. A repeater by the window can cover an entire city.
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Outdoor location with solar power
No power? With a solar panel and battery, your repeater runs completely off-grid.
Recommended hardware
These devices are popular for repeaters:
Heltec V3
Cheap and reliable. Great for an indoor repeater. Buy the complete kit with antenna.
RAK WisBlock
Modular and flexible. Good for solar setups due to low power consumption.
Seeed SenseCAP
Ready-made solar repeater. Weatherproof, built-in solar panel. Hang it up and forget about it.
Frequently asked questions
How much power does a repeater use?
On average 0.5 to 2 Watts. A simple USB adapter (5W) is more than enough. On solar power you need a small panel of 5-10W.
Do I need a broadcasting license?
No, MeshCore uses the 868 MHz ISM band which is free to use in Europe. No license required.
Can I also chat via my repeater?
Technically possible, but it's better to use a separate device. A repeater should keep as much capacity free as possible for forwarding.
Which preset should I choose?
In the Netherlands and Europe: EU/UK (Narrow). This is required to communicate with other nodes. Other presets don't work together.
How do others know my repeater exists?
Your repeater announces itself periodically on the network. You can also report it in the community or put it on the map.
Want to set up a repeater yourself?
Check our guide for setting up a repeater, or see which hardware is suitable.