Yes one time here in Boston I was getting WEEI sports talk on 850 WEEI and they announced at 2 am they were going off to do work on the transmitter and when they shut off, KOA 850 boomed in. KOA...from Denver!
We crossed the Caicos Deep by tuning into the missionary radio station in Cap Haitien - and by the time we hit north Florida coming back we could pick up WSB and just keep the needle in the middle.