I live in Cincinnati, Ohio and have Cincinnati locals included in my package. I have an outdoor antenna that I use to get Dayton locals as well, and bought an AM21 to have them included in the guide. The issue is, when I go through the antenna setup, the only channels that allow me to add to the guide are from Dayton. I want to add off air sub channels from Cincinnati, but for some reason the AM21 does not recognize them at all. I know that the antenna is picking up the channels because I have plugged the antenna directly into my TV and it works fine. Any suggestions? I should also add I am using an HR24.