I printed out a google earth map with quarter mile marks on it from the point of where i set my tripod up. . I flew to the mile mark visually via the FPV cam...might have been slightly short of it, when I turned, but I had perfect reception. I was also about 800-900 feet high. My brother had visual on it via binoculars, so I wasnt to concerned. Next outing, i will be pushing it a little farther. Iam flying in some pretty remote areas.