There is freeware / shareware / open-source software available that can help you to design antenna systems. One such source is listed below but there are others. ARRL is a good place to start searching though I came up with this link from a Google search. If this software is confusing to understand then feel free to lean on a local HAM operator or the helpful folks at ARRL in CT.<br><br>http://www.myerseng.com/