Hi @geoarauco,
We’ve tested that our LoRa radio works fine on up to 8 km distance when the line of sight between the base and rover is provided. Some of our users conducted the tests on longer distances as well. I can suggest checking the test of the Reach RS2 LoRa in RTK on up to 40 km baseline.
Please note that if the line of sight is obstructed, it can affect the approachable baseline.