There are several articles and interesting notes about bug adjustment out there on the web :-) http://www.vibroplex.com/original_bug_adjustments.pdf http://www.telegraph-office.com/pages/bug_adjust.html http://www.morsex.com/misc/keyadj.htm N8UX Vibroplex movie: http://vibroplex.com/1946_deluxe_n8ux.mov 72/73 de Ken N9VV