Good TV antenna selection is not based on distance from the transmitting station. It is based on accurately characterizing signal conditions, and selecting an antenna that works in that situation. Take a look at the antenna selecting guide to learn more:
What local channels are broadcast in my area? Where are they located? How far? These are all very common questions when trying to choose an antenna. Fortunately, a free service exists to help you determine the answers to all these questions. Its called AntennaWeb and its easy to use. CEA's antenna mapping program, AntennaWeb.org, will help you determine the proper outdoor* antenna to use in order to receive your local television broadcast channels. Whether the antenna you want is for use with a home satellite system, high-definition television (HDTV) or a traditional analog set, this site, based on geographical maps and signal strengths, will show you what you need to know to buy the right antenna.