Digital TV Converter Boxes can be purchased at almost all major electronics retailers.  Some explain of these retailers are Wal-Mart, RadioShack, Circuit City, and Best Buy.  The current rumor is that Target is not carrying converter boxes but this could be false.  With a recent shortage of converter boxes in stores the other option is to purchase your TV converter box online. Converter boxes can be purchased online at all of the retailers above along with many other places.  One of the best places to purchase your converter box online is from Solid Signal.  Solid Signal currently has over 15 different converter box models for sale.