Dennis, I'm short on time this morning but here are some links: http://www.w1tag.com/Modes.htm http://www.w1tag.com/600M_Modes.htm http://freenet-homepage.de/dl4yhf/wolf/index.html http://www.scgroup.com/ham/wolf.html (old but useful) John Andrews, W1TAG Dennis Williard wrote: > I am interested in what is WOLF.