THOSE INTERESTED IN FILTR DESIGN PLEASE CHECK OUT THIS SITE
www.aade.com/filter32/dishal.htm
included in this site is a link to a filter analysis program
on the aade site.
the author of this, John Pivnichy , wrote an excellent article in Jan
1993 73Magazine and abook "Ladder Crystal Filters" published by
mfj enterprizes, Starkville MS.
The basic premise of Pivnichy's work is shunt and series filters
