When I initially tried it on Saturday it was not reliable.  At the time I had a hotspot running on my phone and tablet and both were in the tractor.  I turned off the hotspot on my phone and had zero issues.  Dad said it disconnect one time on Sunday but reconnected on its own within a minute.  He's not tech literate enough to know what disconnected but it said VRS disconnected.  I'm using an Edimax usb wifi receiver on the back of the TMX.