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Hardware Considerations

A MeshCore repeater needs three things: a LoRa radio running repeater firmware, an antenna, and reliable power. How you combine these depends on your deployment location and budget.

The LoRa radio

Any MeshCore-compatible LoRa device can be flashed with repeater firmware. The radio is rarely the performance bottleneck —- location and antenna matter far more. Key requirements:

  • 915 MHz band —- required for US/Canada. 868 MHz devices (common in European product listings) will not interoperate with the US network.
  • External antenna connector —- essential for connecting a quality external antenna. Devices with only a PCB trace antenna are not suitable for fixed outdoor deployment.
  • MeshCore firmware compatibility —- verify against the MeshCore compatibility list before purchasing.

Purpose-built outdoor units vs. DIY

Purpose-built solar repeater units

Several manufacturers produce all-in-one weatherproof units with integrated solar panels, batteries, and LoRa radios. These are the simplest path to a permanent outdoor installation —- they arrive ready to mount and flash.

Advantages: weatherproof from the factory, integrated power system, no enclosure engineering required.
Disadvantages: higher cost, limited hardware customization.

DIY builds

A builder can assemble a repeater from individual components: a LoRa board, weatherproof enclosure, solar panel, charge controller, and battery. The main challenges are reliable weatherproofing and correctly sized cable penetrations.

Advantages: full customization, potentially lower cost, complete control over every component.
Disadvantages: requires time and skill; waterproofing failure is a leading cause of field failures.

Enclosures

Electronics exposed to outdoor conditions must live in a weatherproof enclosure rated IP65 or higher. Key considerations:

  • Proper cable glands on all penetrations (antenna, power, USB)
  • Desiccant packs inside to absorb residual moisture
  • UV-resistant material for sun exposure
  • Thermal management —- enclosures in direct sun can reach temperatures that damage electronics without adequate ventilation or shading
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