You might be surprised to find out most millennials don’t know they can get TV stations for free. Bring up the subject of “antennas” and “analog” and you’ll see eyes glaze over. Meanwhile, they’ll pay out the nose for Netflix, Hulu, and a range of other streaming services that might as well add up to a cable bill.But for those of us who grew up during the golden age of television, we’re very familiar with adjusting antennas and braving wind, storms, and interference for a good signal. Today’s antennas, however, are far more advanced than in the past — allowing you to pick up free over-the-air TV in a snap.No matter which demographic you fall into, you’ll probably want to know what stations you can grab with your antenna setup. Luckily, this handy website can show you all the channels on your local airwaves — with detailed maps and signal strength to boot!