An antenna is just some metal used to pick up the signals as long as it's designed for the correct frequency band. TV stations broadcast on 2-14 are considered VHF, and others on 15-36 are considered UHF. Antenna Man's Tyler does a good job explaining why there's no such thing as an HD or digital antenna. As someone who started watching over-the-air since severing ties with DirecTV, even I find it is important to do your homework before going out and buy your first antenna
