I did some tests on the stock remote on my own. Because I was thinking about getting an extender. In my neighborhood, max distance with houses and trees was 2800 feet. Yesterday, I took mine to a park with open line of site and tested distance. I got 16,6240 feet before the weak signal appeared. I could of pushed it more. That was 72% battery. So, that's a total of 3.12 miles. When I landed, I had 2:15 left on the battery. That was with a 12 MPH wind on return. So, I figured I'd never need to fly in obstructed areas to warrant more than 2800 feet. Open line of site, I don't see going much beyond what I did at 3.12 miles. Any more would be risking a premature land because of battery life. So it wasn't worth it to me to add an extra mile with an extender. Some say 4 miles with an extender, much more with an amplifier. Battery life is the key, not distance. Have you tried to see how far yours will go from an open field with no obstruction? I took mine up to 250 feet for my test flight and had two yellow bars left on my transmitter when I stopped at 16,624 feet. Stock, it works just fine. To me, this is amazing.