I have used an external 4:1 balum mounted just outside the shack for years with ladder line to the antenna. If the coax is kept short ie. less than 10-15' and is of good quality, the added loss will be minimal. 73, Frank K4VMO -- FAQ on WWW: http://www.contesting.com/FAQ/tentec Submissions: tentec@contesting.com Administrative requests: tentec-REQUEST@contesting.com Problems: owner-tentec@contesting.com