Supposedly both are transmitted from the same site located at Big Flat. Using another radio site located in the Washington DC area, you can sometimes hear the controllers on both 132.200 and 133.475, but very faint, and only when conditions are right. That was the case this morning, as I could hear the controllers on both these frequencies coming in about strength 1 (out of 5), both about the same strength. If you can just hear the controller in the Washington DC area on 132.200 I'm surprised you can't get them in Harrisburg ? How strong are you getting the controller on 133.475 ? DJ