I have a terrible problem with interference on the lower am band. From about 900 khz and lower it is so bad that I cannot pick up any stations, except for one that is only 20 miles away, and even that one has static in the background. Is there any way to figure out what is causing this, and is there any way to get rid of it? I live near some power lines but a friend of mine across town does also and he doesn't have this problem at all. Thanks for any help/suggestions.