I got a small local class A signal sandwiched between two big class B's both running HD. The sidebands clobber our signal any time there is just a little bit of skywave. I am dreading the day that any kind of power increase is authorized for HD. It's going to have a very negative affect on our signal.
Third paragraph down, ending sentences.
Link:
http://boards.radio-info.com/smf/index.php?topic=149625.msg1266464#msg1266464