As I close this topic I would like to refer everyone the Polyphaser http://www.polyphaser.com/ engineering notes at http://www.polyphaser.com/ppc_pen_home.asp and in particular to http://www.polyphaser.com/ppc_PEN1016.asp 73, Dick -- Dick Flanagan K7VC NV SM E-mail: k7vc at arrl.org