Low Pass filter design?

[freecell]

Moleculo,

funny you should mention math........
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[Moleculo]

Try a 7th order filter designed for 30 MHz, C-input Lowpass, Chebyshev style

Here's what SVCFilter shows for that:

 

[C2]

Now see how nice that one is?

i think mine is a drake and it works really well. I like their design as well, open air inductors in seperate chambers, and the feed through caps are made from a plate with a dielectric between that and the chamber wall. So simple!

 

[C2]

here is another nice way to do it:

http://www.broadcastconcepts.com/images/lfp2ks.jpg