I’m using the CubeCell HTCC-AB01 as a node and a raspberry pi 4 with the Dragino pi Lora/GPS hat as a gateway.
I successfully can communicate between these devices, but after around 100 m in an rural region I cant receive any message because of the weak RSSI.
I doubt that it’s the software, because I’m using the LoRaSender Sketch on the CubeCell and running rx_const.py (from the pysx127x github repo) on the pi without any changes except the following settings (on both sides of course):
- Frequency: 868.5 MHz
- SF: 10
- Coding Rate: 4/5
- Bandwith: 125kHz
- Output Power: 14 dBm
- Antenna: the orignal one of both devices
If they are next to each other the RSSI is around -50dBm but changes dramatically only 5 m further away (around -70 to -80 dBm).
This continues til I cant receive any message around 100 m away with an RSSI of -110 dBm.
I already read some posts with similar issues but there was never a correct answer. Can someone help me with this problem? Or could it “only” be a damaged hardware?
I would be really thankful for any advice.
One thing I’m not sure about is that the lowest RSSI I can get is around the -110 dBm, but it should be possible to receive messages even with an lower one or am I wrong?