The key point here is that these are all filters *are* offered by other manufacturers -- but at their 2nd or 3rd IFs. We offer them at our first I.F. See my previous e-mail. 73, Wayne N6KR On May 5, 2007, at 6:04 AM, Bill Tippett wrote: > I wrote: > > >BTW I still cannot fathom 12 roofing filter options... --- http://www.elecraft.com