Can an apple airport base station be used as a wifi range extender?

Can this airport base a href="http://store.apple.com/us/product/MB321LL/A/AirPort-Express-AirTunes?fnode=MTY1NDA0Mg&mco=Nzk5MTIxOA" rel="nofollow"http://store.apple.com/us/product/MB321L…/a be used to extend the range of my already existing wifi