I'm past 4000 ft just cruising in a mountainous,heavily forested area, I use DBS on my st16 and my st10s. You should of read the forums on aftermarket range extenders.Heck I easily got over 2000 ft with the stock setup. fpvlr just doesn't compare to the DBS,good luck with that 3.
It doesn't matter because as I said earlier, I already returned my H. DJI definitely is the clearly the king of drones when it comes to distance. It might be my area because there's all sorts of things that can and are probably interfering with my WIFI signal when I had my H.