Eamon Skelton wrote:

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.

Handbook of Filter Synthesis by Anatol I. Zverev
(now available in paperback)
is the best book I've ever
seen on this topic. It even has tables for lossy filter elements.

Zack Lau W1VT