The first decision will be is your new antenna going to be installed inside or on the exterior of your home. Then you should determine what exactly you want from your antenna. If it is to be used as your only means of television signal be sure to make a quick survey of your surroundings. If you have a lot of trees or other structures on your property that can interfere with the signals then you need to look at more powerful antennas. Another consideration before purchase is installation. For interior you most likely can do it yourself but outdoors may require a professional installation. If the antenna is supplemental to cable or satellite service be sure your TV has the input to plug it in. And always be sure your item can be returned, antenna reception is dependent on so many factors bey