There are both indoor and outdoor antennas available that can receive digital television signals very well. There are also combination antennas that can be used either indoors or outdoors. Both indoor and outdoor antennas can be directional or multidirectional. There are also antennas that can pick up either UHF or VHF signals as well as antennas that can receive both. Which type of television antenna is best for you depends on the television stations in your area and the terrain around where you live.
If you live very close to the source of your local digital television transmissions, an indoor multidirectional antenna will probably pick up digital signals with proper reception. However, if you live far away from the digital television stations in your area, of if there is a lot of interference, chances are you will need an amplified antenna. Amplified antennas use a power adapter to boost television signals. Both indoor and outdoor antennas come in amplified and nonamplified models.