How to Access the Station Guide After Connecting an HD Digital Antenna
After connecting an antenna and completing the channel auto scan, you can access the station guide by pressing the "Guide" button on your remote. Once selected, a list of all saved channels will appear. The content displayed is provided by the station. If any content is missing, it means it’s currently unavailable from that channel source.
Reference: How to Connect an HD Digital Antenna to Your Panasonic Fire TV.