Great product. I did some field tests from the substation location of a wind farm under construction site last week. Fantastic results. http://www.speedtest.net/my-result/i/772532497
We used an external high gain yagi antenna pointed vaguely in the Wonthaggi direction (4G coverage) which was about 50klms away. I have so far used standard internet APN: Telstra.internet and our Telstra MPLS APN: Telstra.corp with radius authentication. All with great results. We are considering installing 2 in fail over mode, pointing at different towers.