Antenna connection

An antenna is a separate source from DIRECTV. It is plugged into your TV separately by buying an indoor or outdoor antenna (VHF or UHF depending on the frequency strength in your area and which channels are on which frequency). 

I suggest you take a look on YouTube at Antenna Man's channel, it is a great resource for those who are starting to get an OTA antenna and need assistance purchasing one, setting it up, etc.

https://m.youtube.com/@AntennaMan/videos

Thanks for your response, but it didn’t really solve my problem. Thanks for directing me to the AntennaMan videos, though.

Are you already using the coax output on your TV? Please elaborate.

There isn’t a coax output on the TV, only one input. There is not a receiver box either. DIRECTV is accessed be a single coax cable going from the wall to the TV input.

Do you have your own DirecTV satellite dish or are you in a multi-dwelling (apartment, condo, etc.)?  It would be unusual to get DirecTV directly from a wall coax outlet connected directly to your TV's ANT INPUT. But if that's the case, you can buy Antenna A/B switchers to share two different antenna feeds to your TV's ANT INPUT. 

Yes, the tv is in a multi-dwelling unit. I will research the switcher. Thanks.

https://www.amazon.com/PARTS-EXPRESS-Deluxe-Coaxial-Switch/dp/B000LFXGWI/