HDTV antennas let you get high definition over the air (OTA) signals from TV stations within range. These are high quality uncompressed digital signals from your favourite local stations.
HDTV antennas come in many shapes, sizes and functions. Smaller set top or table top HD antennas can be placed indoors but require a strong signal.
Outdoor HDTV OTA antennas are much larger and are typically either attic or roof mounted. They provide the best reception so you're more likely to get a wider range of channels.
There are several online sources where you can enter your postal code and it will tell you the stations and strength in your area. We highly recommend doing that research first particularly if you are not in or around a city or have lots of interference from structures.