Has anyone ever made actual 6/60 dB plots of Ten Tec 217, 218 and 219 filters? Or does anyone know if they can be found anywhere on a webpage? I need the filter plots as standalone devices... ...not measured through the radio. Like these at http://www.qth.com/inrad/tentec_menu.htm if you click "Performance Curve Online" (759, 760, 761). 73, Bill W4ZV