@gjp72444
If you are using a Roku device connected to a TV, you will need to use your TV remote (not the Roku remote), to select the appropriate "Input" on your TV for antenna/OTA.
If you are using an actual RokuTV, you will need to select Live TV in order to view antenna/OTA channels (and have an antenna connected to the coaxial input in order to receive antenna/OTA channels).
Roku Community Streaming Expert
Just another Roku user... I am not a Roku employee.
Insignia RokuTV, Ultra 4660, 4802, 4850, Premiere+ 3921, Express 4k+ 3941, Streambar 9102