Howdy all. I just received my FC40 yesterday and took it for its first two flights today. Absolutely love this thing. My question: many people in the forums talk about the range they are getting with their machine, 200m, 300m, 645ft etc etc. - how do you know on the fc40 how far away you are? Do I need to add components to gain this feature? The only app I know of is the fc40 camera app for FPV.. I can't see anywhere from with in the app to get this kind of information. Please help - thank you.