Maybe not 1-2 miles away as the signal is practically raining on you, but if you are almost right up to the tower, then the majority of the signal would be 400 to 700 feet above the ground. The West Creek Reservation just put a parking lot right in front of WOIO's tower, and if you sat in the parking lot with a portable TV and a good antenna, the reception of WOIO would probably be roughly the same as if you were 15-20 miles away. Drive 1-2 miles south of anyone's tower and the reception will likely be pegged at 100%.
AM signals are different as the signal is much closer to the ground, so being closer to their tower(s) (and sometimes in the right direction from the towers) will improve reception. Unless you live by blowtorch 1100, most vacant frequencies (and some used frequencies) will have WTAM bleeding over them. Driving past their respective towers, I have had 1100 bleed over 1260, dispite the two being less than a mile apart, 1220 bleed over 1260, and 1260 bleed over 1220.
HD Radio: An Audiophile's Worst Nightmare.