I have noticed a strange RSSI behaviour during a range test. I was usuing the pingpong example from https://github.com/HelTecAutomation/ASR650x-Arduino/blob/master/libraries/LoRa/examples/LoRaBasic/pingpong/pingpong.ino
With +22dbm setup, SF12 and standard antenna I was able to get over 1.5km line of sight with a RSSI of -89 to -92.
I went 50m more away and suddendly it was not possible to get a signal anymore. Is there a possibility to improve the sensitivity of the CubeCell board?
According to the Semtech SX1262 datasheet the sensitivity does down to -148 dBm.