Popular in ham radio circles, the process looks nicer than ... like the Wheatstone Bridge Regenerative Receiver you see above.
When I was a kid living near Grantsville, West Virginia, some of my neighbors were into amateur ham radio. I found their analog electronics and antennas and their mastery of Morse code fascinating.
Ham radio is no different ... you can control the whole thing from a PC if you want to. The receivers are exceptional compared to what even a high-end radio would offer a few decades ago.
The annual conference of the Ham Radio University, which was formed in 1999, was held Saturday at LIU Post in Brookville.