I currently have two HR20-700's, an HR21-100 and a D11 SD receiver (a lot of money tied up in extra receivers per month) I want to use my old HR10-250 strictly for OTA. I connected it but don't see any channels (it's been disconnected since the summer when I got the HR21). I was going to go through the guided setup again, but it tells me to call DirecTv first to activate. Does DirecTv charge a monthly fee for using this box strictly for OTA or is the activation just this? I certainly do not want to pay another monthly fee for a box that is not getting DirecTv channels.