@Thomas Rodriguez yeah RSSI is going to get increasingly unreliable as you push toward the far end of that range, and for agricultural-scale distances I'd honestly treat it more as a signal health indicator than a distance estimator.
The core problem is that at extreme ranges the RSSI values compress — you're operating near the receiver sensitivity floor so small changes in actual distance produce almost no meaningful change in the dBm reading. Multipath and atmospheric variation (which matters more than people expect over open flat terrain, ironically) adds noise that swamps whatever distance signal is left.
For your use case though, you've actually got a much cleaner solution right there in the ecosystem — the GNSS module at 18Hz fix rate and 1.5m accuracy is genuinely what you want for distance estimation between nodes, not RSSI. Pair each remote unit with a GNSS module, stream the coordinates back over the BLE link, and you get precise positions rather than a fuzzy RSSI proxy. That also fits perfectly with the Sensors Module stack if you're doing agricultural environmental monitoring anyway.
RSSI on the MultiNav Pro+ is still worth logging as a link quality indicator — it'll tell you if a node is marginal or solid — just don't try to use it as a rangefinder past maybe a few hundred meters.
