Laurence,
AADE has a very powerful filter design and analysis program and its free:
http://www.aade.com/filter.htm
--
73 Warren K2ORS
WD2XGJ 136-140kHz
WD2XSH/23 505-510kHz
WE2XEB/2 160-189kHz
WE2XGR/1 505-515kHz
FN42hi
http://www.w4dex.com/wd2xgj.htm
-------------- Original message ----------------------
From: Laurence KL1X <[email protected]>
>
> Anyone point me to an online tool for designing LPF's for say 5 7 or 9 pole
> Chebyshev's on LF or HF? ps. Mr mail service hasnt plonked this months Radcom
> onto my desk and not expecting it for another week or so; this is typical for
> a
> routing that includes UK, Houston thence Singapore. with thanks Laurence 9V1
> LF
>
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