Folks,

I threw the attached PDF file together to enocourage those who want to design their own crystal filters. It was not meant to be an exhaustive paper on filter design. My intent was to show by example how easy it is to design/build successful and cheap crystal filters from common components. If one does some research into filter design and uses some simple available software, it is a whole lot of fun learning this craft. And, you do not have to be a math major!!!!!