Dear Alan, if I understand well,you are receiving CW by ear, not by Spectrogram. For receiving CW by ears I found very useful a stereo processor, like that described in http://hem2.passagen.se/sm0vpo
Hello Rik and Marco, as Rick is thinking to write a software for controlling a step attenuator, I think it would be possible to link that software to a digital reading of antenna current, so that the
I agree with you that CFAs seen in the literarture are too big for 135 kHz, and not enough efficient To avoid to be flamed, I states immediately that I'm not a supporter nor a detractor of CFA, but I
