How do I use a digital antenna for free local channels?

A digital HD antenna plugs into any TV with a coaxial input and receives free over-the-air broadcasts from ABC, NBC, CBS, Fox, PBS, and local channels in HD quality — often in 1080i or even 4K on newer broadcasts. Position the antenna near a window facing broadcast towers for best reception. Use a free app like Channels DVR or Antenna Web to find tower locations near you. Reception quality depends on your distance from towers and local geography.