I built a simple receiver circuit called the Zeta SDR and then used a 192 KHz sample rate USB audio device to do the A2D... Combined with an antenna tuner I rec

I built a simple receiver circuit called the Zeta SDR and then used a 192 KHz sample rate USB audio device to do the A2D... Combined with an antenna tuner I received PSK31 signals from France in Ohio... The antenna was a mains power extension cord I had lying around alligator clipped in and strung up indoors. Quite possibly the craziest and most satisfying electronics project I ever did and it was like 10 parts or something.