I am trying to connect my 2015 Roamio to an OTA antenna....knowing nothing technical about any of this and am just stumped. TIVO “help” (?) said to remove the cable card (Comcast), connect via WiFi vs Ethernet, connect TV to antenna, antenna to TIVO. Then run the channel set-up on TIVO and the TV, both completed. The Antenna picks up a group of stations starting with 25 to 33, none of which are the main networks (ABC, CBS, NBC or Fox31 or RMPBS). It doesn’t seem to matter where the antenna is located...high, low, on the TV, nothing changes. NBC came in for a bit but I had not removed the Cablecard yet (I am assuming it does something even with Comcast no longer my provider?). My TV identifies TIVO as Armstrong...is that the issue? Is it the antenna? The same type of antenna works perfectly in the other rooms where TIVO is not connected. Any ideas here?