I live across the San Diego border in Rosarito Beach, Mexico and use PLEX for my movies through a NAS. I’m interested in the live TV & DVR since I already subscribe to PlexPass but unclear exactly what I need in terms antennas/etc to make this work to get US programming, or if it is even possible.
I have just a regular TV antenna, RG-6 coax and use a Silicondust HDHomeRun digital tuner for Live TV. The distance to your location from the TV station transmitter will determine how large an antenna you will need.
I am sure there are other tuners our there that work with Plex, but I have no experience with them.