Hello Kirk, I have attached a link below to the specifications of the unit, you will find more information regarding the RF Input here.
https://www.samsung.com/us/televisions-home-theater/tvs/premium-uhd-tvs/75--class-nu8000-smart-4k-uhd-tv-un75nu8000fxza/?redir=UN75NU8000FXZA#specs
^Britt