How to Geek: “No matter where you live, there are almost certainly TV channels—likely even HD—that you can watch for free with a simple OTA antenna. But you don’t need to buy an antenna to find out which channels you can get…OTA TV—also known as “terrestrial TV”—is broadcasted “over the air” from the towers of your local TV stations, such as ABC, CBS, NBC, FOX, and PBS. Since the channels are transmitted over the air through radio waves—not the internet—all you need is an inexpensive antenna to pick them up at your home for free. And that also means the picture quality is better sometimes, too. The vast majority of TVs include the necessary tuners that work with antennas, making it a super simple process to watch local channels for free.”