Eric For a recent detailed analysis of SS have a look at the Appendix 1 of "A Novel Perspective of Amateur Radio Contesting" at http://www.dynamicforesight.com/~ve5zx Cheers .. sylvan Ô¿Ô¬ ---------------- Sylvan Katz, VE5ZX Saskatoon, SK "A Novel Perspective of Amateur Radio Contesting" at http://www.dynamicforesight.com/~ve5zx