I have tried flying my Phantom in many places, open parks, around my house, and nothing seems to help get better range. I can only get 1,000-2,000ft away before I lose range. I get a no signal sometimes sometime at a height of 150ft and only 50ft away. I have no idea why the drone keeps losing connection and wont go far. Can anybody help?

I have tried flying my Phantom in many places, open parks, around my house, and nothing seems to help get better range. I can only get 1,000-2,000ft away before I lose range. I get a no signal sometimes sometime at a height of 150ft and only 50ft away. I have no idea why the drone keeps losing connection and wont go far. Can anybody help?