If you want to record from over the air broadcasts you can buy an external ATSC tuner with PVR functions and attach your drive to that; http/www.amazon.com/dp/B01ARGXJ90?psc=1&smid=A2UA4Q9PFVJAKP
http/www.bestbuy.com/site/tivo-roamio-ota-digital-video-recorder-black/8758098.p?id=1219364357147