Re: Practical CW Operation? #ubitxcw

Daniel Conklin
 

A while ago I built a 4SQRP group HiPerMite CW filter in a mint tin to put between my headphones/speaker and my receivers.  There are others out there, but this one is a proven performer and I'm very happy with it.  http://www.4sqrp.com/hipermite.php
Dan, W2DLC

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