The figure in the following page might help this discussion. The blue lines are electric field lines. http://www.geocities.co.jp/Technopolis/7193/si/diff-line-3.jpg The both pair has same line width and spacing but different hight from the ground plane. The copy right of this figure belongs to Akira Shida and CQ publishing, Tkoyo, Japan. Regards Akira --------------------------------- Do You Yahoo!? Yahoo! BB is Broadband by Yahoo! http://bb.yahoo.co.jp/ ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List archives are viewable at: //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu