johnpd In terms of distance, the rig is on my balcony (west end of our house), and I am in the adjacent room with the doors open to the balcony sitting by the door opening. For all intents and purposes, I am approx. 2.5m from the rig.
I have two ASIAIR Plus devices, used in two different rigs, and they both appear to experience similar behaviour with respect to dropping a connection. During an hour session, it may drop 3-4 times.