I have got this information from a website.
[Mod] cite the source
https://www.samsung.com/us/support/answer/ANS00062206/ [/Mod]
However I Havent used samsung TV before because I am a Amazon Fire TV user.
And my ISP have already installed channels from his end.
I think the below steps might help you.
Scan for local over the air channels
Important: The Broadcasting menu will be greyed out if you do not first change the source to TV.
Using the Auto Program feature and scanning for the available channels on your TV only takes a few minutes.
- Change the source on your TV to TV. There are a few ways to do this.
- You can press the source button on your remote and then select the source labeled TV.
- You can press Home, navigate left to source, and then select TV.
- If you have Samsung TV Plus on your TV, selecting this app will put your TV on the TV source.
- Use the directional pad or arrow buttons on your remote to select Settings.
- Select Broadcasting, and then select Auto Program.
- Select Start to begin auto-programming, and then select either Both, Air, or Cable.
- Select Air if you are using an Antenna only and you want the fastest results.
- You can press Home, navigate left to source, and then select TV.
- If you select Both, it will take longer to scan, but you may find more channels.
- Your TV will begin to scan for channels. After it's done, select Close to finish.