Indeed, this was pure line-of-sight, as the gateway was within the radio horizon of the balloon. Ground to ground would be more impressive, we have already seen

Indeed, this was pure line-of-sight, as the gateway was within the radio horizon of the balloon. Ground to ground would be more impressive, we have already seen ground distances with LoRaWAN of 320+ km due to atmospheric ducting. We'll look for more data and do a post about that later.