How do I get my Samsung TV to recognize my antenna?

Select Broadcasting, and then select Auto Program.
…
Connect a cable or antenna and scan for channels
  1. Select Air if you are using an antenna only.
  2. Select Cable if you are using a cable box only.
  3. Select Both if you are using an antenna and a cable box. You will get the most channels this way.

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Why is my Samsung TV not finding channels?

If your Samsung TV is not getting all channels you will need to go to the source menu and select ‘TV‘ > then connect your antenna to the RF connector on the back of the TV and select ‘Chanel Scan’ > select either ‘Air, Cable, or Both’ and scan for all available channels that have a reliable signal.