Good day, I saw radio transmitter mod for the Vision 2 but is there a mod we can do on Radio transmitter of Phantom 2 ? My goal is to get more range. I flew 4 km (Gps mod) one way and came back. In ATTI mod I fly faster so I could probably make 6 km. I may buy a new battery for Phantom 2 (6000mw) to get further. Can we change the antenna for beytet signal ?