Dji has 10000 engineers?Quite the contrary! DJI delivers the best stock range of any drone, without any necessary mods. They don't place any arbitrary limits. The physics of your problems are uniquely yours! If you really think you can out-engineer DJI's 10,000 engineers, best of luck to you! DJI's designs work well for 99.99% of uses. Flying for miles from behind and below groves of tall trees “with leaves" is a problem of your own making, and not any defect in DJI's antenna design.