On Fri, 05 Mar 2004 07:45:41 GMT, "Alex"
wrote:

Has anyone tried building a 1/2 wave coaxial sleeve antenna for 40m?

go to http://www.qsl.net/oe1mww/station.html

I have made several of those. You need to match this antannna.
You will find everything what you need at the bottom of the page.

73s
Wolfgang
OE1MWW