I use a P-NUCLEO-LRWAN1 and I-cube-lrwan End_node firmware. It was connect with Semtech lora gateway but rssi is very low and it have some lose of message from P-NUCLEO-LRWAN1. please see result a picture below.
In addition, I use a same gateway with Lora Semtech sensor node. It was a good RSSI. Please see a picture below.
How to solve this problem? and Can I develop Class C End node with P-NUCLE-LRWAN1?