[CW] 600 Hz Resonant Speaker for CW - Plans

[LA5HE Ragnar Otterstad]

I think your spelling "resonant" is more correct than "resonate" as used 
in the article. I am curious to know how it can be of much help, unless 
the receiver you are using does not already have any narrow filters, or 
has a lot of noise in it's audio stages? I almost always use headphones 
for CW listening anyway.

Ken N6KB


Works like a very selective audio PEAKFILTER.

73  Rag   LA5HE