

  PASSIVE CW AUDIO FILTER ( BASED ON AN ARTICLE BY KI3U )
  https://yo6dxe.com/passive-cw-audio-filter
    
  Feel free to share it with fiends !
  Do you enjoy the project ? DONATE with PayPal to support me: https://paypal.me/yo6dxe

  IN THE DOWNLOAD FOLDER:

  You have a filter simulation with the final value of the components used in the schematic. 

  I will not design a PCB board because it depends a lot on the type of inductor you can build.
  You can transform it into an active filter by placing it before an audio amplifier.
  
  Thank you and good luck building it !
  
  73, YO6DXE

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  Attribution NonCommercial ShareAlike
  https://creativecommons.org/licenses/by-nc-sa/3.0/legalcode

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