I may be wrong, but to my knowledge, 3DR made all controllers the same. I don't believe they made a North American version and a European version. It seems the fascination of flying for distance is growing. The first thing people ask is how far can it go? Now, being human, even I have tested the distance of Solo. I did so at a very wide open area, with little or no wifi traffic. At a little over a mile, I thought to myself, WHY? I will never need to go out that far for anything I would want to do. Besides, with any UAS incident being blown up all over the news and social media, I did not want to take a chance on contributing to that. I do have the FPVLR antenna setup, but I did so for better signal strength closer in, than for distance. I run the stock wifi cards, and am currently happy with them. I upgraded to the mRobotics gps for Solo, just for the added insurance of more satellites available for acquisition. There may be special circumstances where a person may have to fly a long ways out, but I think for the majority of us, LOS is good enough.
