The basic steps to connect an antenna

Connect an antenna to your Samsung TV by plugging the coaxial cable from the antenna into the RF input port on the back of the TV, then running a channel scan in the TV's settings. The RF input is a round port labeled "ANT IN" or "RF IN" — it looks like a threaded socket about the size of a pencil eraser. Once the cable is seated firmly, go to Settings > Broadcasting > Auto Tuning and let the TV search for available channels. The scan usually takes two to five minutes.

If your antenna came with a power adapter or amplifier, plug that into power first, then connect the antenna's output cable to the TV. Some amplified antennas need power to work at all, so the TV will find no channels if you skip this step.

Key Takeaways

  • The RF input port on the back of your Samsung TV is where the antenna cable connects — it is a threaded round socket labeled "ANT IN" or "RF IN".
  • After connecting the cable, run Auto Tuning from Settings > Broadcasting to search for channels; this scan takes a few minutes and finds all available local stations.
  • Amplified antennas require a power adapter plugged into an outlet before they will work, so connect power before running the channel scan.
  • If the TV finds few or no channels, move the antenna to a higher location, away from metal objects and walls, and run Auto Tuning again.

Locating the RF input port on your Samsung TV

The RF input port sits on the back panel of your Samsung TV, usually near the other cable ports. On most models, it is a round threaded socket about half an inch in diameter. Look for a label that says "ANT IN", "RF IN", or sometimes just "ANT". If your TV has multiple ports on the back, the RF input is typically separate from HDMI ports and is smaller than the power inlet.

Some Samsung TV models have the RF port on the side panel instead of the back. If you cannot find it on the back, check the left or right edge of the TV. Consult your TV's manual or search the model number online if you are unsure — the manual will show a diagram of all ports with labels.

Running the channel scan after connecting the antenna

Once the antenna cable is plugged in, turn on your TV and open the Settings menu. Navigate to Broadcasting, then select Auto Tuning. The TV will begin searching for available channels in your area. During the scan, the screen will show a progress bar and a count of channels found. Do not unplug the antenna or turn off the TV during this process.

When the scan finishes, the TV displays a list of all channels it found. Press Enter or OK to save the results. Your TV is now ready to watch over-the-air broadcasts. You can view the channel list by pressing the Guide button on your remote, or by going back to Settings > Broadcasting to see all available stations.

What to do if the TV finds few or no channels

If Auto Tuning finds only a handful of channels or none at all, the antenna position is usually the problem. Move the antenna to a higher location — a shelf, the top of the TV, or a window — and run Auto Tuning again. Height and line of sight to broadcast towers matter more than the antenna model itself.

Keep the antenna away from metal objects, thick walls, and electronic devices like routers or microwaves, which can block the signal. If you have an amplified antenna, make sure the power adapter is plugged in and the LED indicator is lit. Try rotating the antenna slowly while watching the channel count in the scan progress — some antennas receive better signals at certain angles. Once you find a position that works, leave the antenna there and run Auto Tuning one more time to lock in all available channels.

Amplified versus non-amplified antennas

A non-amplified antenna is passive — it simply captures broadcast signals and sends them to the TV with no power required. These are cheaper and simpler but work best if you live close to broadcast towers or have a clear line of sight to them. You plug the cable directly into the TV's RF port and run Auto Tuning.

An amplified antenna has a built-in booster that strengthens weak signals before sending them to the TV. It requires a power adapter plugged into an outlet. Amplified antennas are useful if you live far from towers, in a dense urban area with signal reflections, or in a location with obstacles between you and the broadcast source. Always plug the power adapter in before running Auto Tuning, or the TV will not detect the antenna's output.

Switching between antenna and other inputs on your Samsung TV

Your Samsung TV can receive signals from multiple sources — antenna, cable box, streaming device, or satellite. To watch antenna channels, press the Input button on your remote and select "TV" or "Antenna" from the list. The exact label depends on your TV model. Once selected, you can use the Guide button to browse available channels or use the number pad to jump to a specific channel.

To return to a different input — such as HDMI for a streaming device — press Input again and select that source. Your antenna channels remain saved in the TV's memory even when you switch to other inputs, so you can move between them freely without re-scanning.

Frequently Asked Questions

Do I need a special cable to connect the antenna to my Samsung TV?

No. Any standard coaxial cable with threaded connectors on both ends works. Most antennas come with a cable included. If you need to replace it, look for a coaxial cable at an electronics store — they are inexpensive and labeled as "TV antenna cable" or "RF cable".

Can I use an old cable antenna from a previous TV?

Yes, as long as the cable is in good condition and has the correct threaded connectors. Older coaxial cables work the same way as new ones. If the cable is cracked, kinked, or the connectors are corroded, replace it — a damaged cable will cause signal loss or no signal at all.

What if my Samsung TV does not have an RF input port?

Some newer Samsung TVs, particularly high-end models, omit the RF port because they assume users will stream content instead. If your TV has no RF port, you cannot connect an antenna directly. You would need a separate digital TV tuner box that connects via HDMI, which then receives the antenna signal and passes it to the TV.

How often do I need to run Auto Tuning?

Run Auto Tuning once after you first connect the antenna. After that, you only need to run it again if you move the antenna to a new location, if you move to a different city, or if you notice channels have disappeared. Most people run it once and never touch it again.

Can I connect multiple antennas to one Samsung TV?

No. The RF input port accepts only one cable at a time. If you want to combine signals from two antennas, you would need a separate combiner device that merges the two cables into one, then connects that single output to the TV's RF port. This is rarely necessary for home use.