We have added the K3 5 pole filter plots to our crystal filter plot page. See: http://www.elecraft.com/K3/K3_filter_plots.htm We have also updated our FAQ and 'What Filter's should I Buy?' pages: http://www.elecraft.com/K3/K3FAQ.htm http://www.elecraft.com/K3/K3/Roofing_Filters.htm 73, Eric WA6HHQ -- --- www.elecraft.com