Indeed, @nico1966a, nice distances. But unfortunately this also shows that higher might not always be better. If this would have been a real node, and all its packets would be received by many gateways far away, then such might affect other nodes using the same frequency (channel) and spreading factor (SF; subchannel). And it would surely eat the capacity of those far-away gateways while there would be no actual need for that, if close-by gateways receive the packets too.
As such, I was surprised that even SF7 (fastest possible data rate, lowest air time, worst distance) was received 48 km away. I'd love to see what happens for nodes that are not that high, along with high altitude gateways. We "only" need someone to sponsor the gateway and location...
(Beware that nodes do not perform any activity nor collision detection; they just send when they feel like it. And there are only few rules to ensure every node should gets its share.)