I have an issue, which is similar to the one described here:
On regular intervals proprietary loarawan frames are getting logged on my gateway.
DOWNLINK gets registered first and after 2 seconds the UPLINK shows up.
Uplink has some base-64 content that I cannot find out how to decode. Strangely, both of them have the same mic!
Does anyone know what these are? Are they described somewhere in the Standard?