Page 1 of 1

Very simple, very effective outboard CW Audio Filter

Posted: Sat Aug 27, 2016 9:14 am
by ki3u
It is possible to realize an excellent CW radiotelegraph outboard passive audio filter with
just one inductor and one capacitor. I describe this in some detail on this page of my website :

http://ki3u.byethost3.com/Radio-Physics ... ilter.html

Berj / KI3U