In my area, the maximum possible experimental sight distance is 10 km, so I tried 10 km point-to-point communication. I chose a straight line over a lake, avoiding over urban areas as much as possible.
The result was a distance of 10.6 km, RSSI of -122.1 dBm, and SNR of -9.5 dB, ensuring stable communication. Since the theoretical limit of RSSI is -136.5 dBm, there is still a possibility to extend the distance.
Sketches used in the experiment
ESP32WL_P2P_LongRange.zip (30.3 KB)
