What is the best material to make the 9:1 matching tranformers out of and where can I get some. I am going to build some of the famous slinky beverages. Our local Target stores have been carrying them. Mike W0MU -- FAQ on WWW: http://www.contesting.com/topband.html Submissions: topband@contesting.com Administrative requests: topband-REQUEST@contesting.com Problems: owner-topband@contesting.com