@Marten yes, that's another gateway I'm testing with: it's mobile (battery powered) and trying to find the best spot in the house (using your sensor for RSSI/SNR ).
I've captured some packets from your mote at the makerspace I think? (the -AB) Was surprised by that. Very curious about the range of your gateway once it's outdoors. I'm not that worried about the (CPU) temperature in the "winter" - my gateway is in front of the window and that probably won't work well in the summer
With your -AA mote we can do some statistics on how many packets are lost (I've got the sequence numbers). A sensor at home also lost some.
Your gateway now has a "made up" EUI, right? Wouldn't it be better if it was the EUI-64 "from the sticker", or a MAC-48/EUI-48 converted (if your MTAC didn't have that sticker )?