I am writing a simple program to design crystal ladder filters
using the formulas from W7ZOI's excellent QST article A Unified
Approach to the Design of Crystal Ladder Filters. QST May 1982.

I have got the tables of normalised coupling constants for
Butterworth and 0.1dB Chebyshev filters from the QST article.

I would like to find a source of similar tables for
filters with more than 5 poles and for passband ripple
other than 0.1dB.

Many Thanks.

73, Ed. EI9GQ.


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