Hi Earl, Does your computer program allow you to input soil conductivity for the region in which the antenna will be erected? How would the various soil moisture contents effect the results you computed? 73, Jeff KH2PZ -- FAQ on WWW: http://www.contesting.com/topband.html Submissions: topband@contesting.com Administrative requests: topband-REQUEST@contesting.com Problems: owner-topband@contesting.com