Better antenna for HandHeld scanner?

I ordered the Uniden bc72CLT handheld scanner and i was wondering, where can i get a better antenna to improve my range. ( i want a antenna to be portable to replace the existing one, not one that goes on top of a car) Here is the radio: a href="http://www.amazon.com/Uniden-BC72XLT-Handheld-Scanner-Black/dp/B0002QIBNK/ref=sr_1_1?ie=UTF8&qid=1307764405&sr=8-1" rel="nofollow"http://www.amazon.com/Uniden-BC72XLT-Han…/a