You will not need a new antenna. All Winegard antennas will work with either Digital or Analog signals. Your television however may have troubles. You will need to check the owners manual for your TV to see if it has a digital tuner. If it does not, then you will need to either replace your television or get a converter box. Below is a link that will lead you to some information on the new digital converter boxes.
Converter Information Here 
