Tom-N8GUN submitted this information-rich document for all of us to share. SDR, Software Defined Radio, is available to hams these days at extremely low prices making the unit the basis for some very interesting experiments.

The SDR is smaller than a  pack of cigarettes and runs off a USB port of your PC. Software does all the work of tuning and such and is available from sources listed below.

Have fun and let the club know what you discovered!