Was at a previous location last week and started receiving "Weak RC" messages at 1,500ft out. I went to a different location today and pushed it to 4,035ft and still had some distance to go. I never received any weak signal messages and the App displayed full FPV and RC signals. I will try in the same location for 5,280ft (1 mile) later today. My max height was 328ft but spent most of the flight at ~200ft. The extra batteries cannot get here soon enough!