Using Cellreception.com shows a SBC Tower LLC. tower about 4 miles from my location. Are they affiliated with AT&T?? The AT&T tower location web site says nothing about this tower. The nearest tower to my location according to AT&T is 11 miles away. Could that be right? I generally never show more than 2 bars at my location. Does AT&T generally run their towers at max allow power? Could I get better reception by them simply increasing power. Can they increase power directionally?