A:Answer Hey there, Emma. You can connect this LG 55" LED 4K 55UQ7570PUJ to an antenna and shouldn't cause any quality issue within the changes of interface, so long they are well connected through the port on the back of the Television. Furthermore, should you need any assistance, please send us a private message on Facebook or Twitter at @LGUSSupport, or reach us at our customer service line at (800) 243-0000, and we will be happy to accommodate you. ^Anthony