I'm using LoRa network with sx1272 + stm32L0 (node),
and RAK831 (gateway) , also custom network server.
i found that uplink rssi printed in gateway is quite good enough(-32dBm), however, downlink rssi printed in node(stm32L0) is quite bad(-90dBm).
the distance from each other is same, and i use SF 12 & same channel.
the power level gateway use is 23dBm which is the standard of Korea.
I don't know why this difference happens.
is this problem maybe from end node's hardware issue or sx1272's bad sensitivity? or gateway emitting low-quality signal (maybe it's not).