The Buddipole is a small, very well made, very portable dipole antenna
intended mainly for portable work.
see:
http://www.buddipole.com/index.html

Yahoo Groups
http://groups.yahoo.com/group/Buddipole/
has a very active user group and W3FF Budd, the designer and
manufacture of the Buddipole is a very active participant in the group.

On the Yahoo Group home page is a pointer to the Buddipole "home brew"
site if you'd like to build instead of buy your Buddipole.

BTW: Budd W3FF does respond to direct emails, so if you have questions
you might consider emailing him directly.