move the antenna. Put it somewhere that it is visible to the sky and test it. It should work.
Also it depends where you live, and the terrain around you. If you were in the middle of no where with no radio waves at all, on a flat plain then you could probably get 1/4mi.
I know in Colorado because of NORAD and all the military bases and hilly terrain, remotes never work predictably. At my house it will work no more than 2 or 3 rooms away from the garage, but when I am at school I can start it from accross campus (just about 1mi).