The 2 devices are in adjacent rooms with an open door and plasterboard between the rooms - distance is no more than 10 metres, and the comms is certainly not 100%.
Where are you Joe? Do you want to swap?? :-)
Updated my location, G.--pretty much at the antipode from Sydney.
I have the same devices, except with the wire antenna. I can take one of the devices outside, so the signal has to travel through multiple walls. At distances up to 100 feet, no dropped packets.So, the antenna type DOES make a difference.