Since upgrading to the latest firmware (1.3.6_RAK b150) the RSSI for all uplink messages is 0 Every still works fine, but I don’t think RSSI=0 is correct.
Sadly I don’t know the previous firmware version anymore Can I find it somewhere in the backup I created before doing the upgrade?
We have also experienced this also, but with AS923 set as AS1 (aka 920-923) the RSSI is stuck on 2db (positive) and lora set as Semtech Legacy Packet Forwarder.
Firmware we tried was also same as your issue : 1.3.6_RAK b150
What we have noticed is AU915 SB2 setting is ok (configured as Semtech Legacy Packet Forwarder OR Basic Station).
Ah ah, I’m not alone, I used an old RAK GW updated to latest an found that RSSI to 0, I was thinking about a issue on my side but looks like a firmware issue.
may be @carlrowan can catch up the team on this one.