Not a matter of the connection. The TV RF coax connection is to the built in over the air tuner.
You will need an outboard ATSC over the air tuner. The antenna connects to that. The tuner will connect to the TV with HDMI.
Don't get a "digital converter box". Most of those won't have HDMI and won't do HDTV. They were made for SD TVs that needed an digital tuner. No HDMI out on these.