I have my Roamio Basic set up defined to my local cable company using a cable card and a TA. I am thinking about dropping cable and switching to OTA (I can get all the major networks in HD via an antenna in my attic) plus Netflix/Hulu, etc. Before canceling my cable service, I'd like to do a trial run by connecting my antenna to the Roamio input and running through set up again. If I decide to stay with cable, will I have to go through cable card pairing and end up having to have a cable company technician come out or will it be as simple as connecting the TA to the Roamio and going through set up again? Thanks!