Wayne the article was actually sent to me by someone who runs a fb page that does some SDR stuff. I had dabbed into SDR awhile back then stopped then Manny got me back into it. Also, I thought as long as you plugged a different stick into a different port the machine gave it a different com# ? There was also a way that you could set SDR# to "scan"(we know it's not really scanning) between frequency A and frequency B.I did that awhile back.The only thing is there were no PL's or DPL's What I liked was the fact that people were able do monitor different types of digital systems using the SDR's even before folks like Uniden and GRE came out whith the ability to do so with actual scanner hardware.