How can i increase the distance for two LoRa devices

Check the use environment

First , User should notice: Radio link quality and performances are highly dependent of environment.

Better performances can be reached with:

• Outdoor environment.
• No obstacles.
• No high level radio interferer in the ISM 868MHz band.
• At least 1 meter above the ground.

Radio performances are degraded with:

• Obstacles: buildings, trees...
• Inner buildings environments.
• High ISM 868MHz band usage by other technologies.
• Radio communication are usually killed with bad topographic conditions. It is usually not possible to communicate through a hill, even very small.