Roger G3XBM's (Mainly) Amateur Radio Blog

In case you missed it, it appears that Rick is SK. The good news is that much of his work is archived on the Wayback Machine. His memory liv...

Yesterday, I posted a circuit that appeared on Rick's KE3IJ 's website back in 2012. This website seems to be no longer there. Does ...

Like many, I like the idea of getting something for nothing.  This circuit was on the website of KE3IJ  some years ago. I think the website...

The website of Rick Anderson KE3IJ is one of my favorites as it is filled with simple circuits, mainly simple receivers, that can easily be...

KE3IJ 's always excellent website has a novel receiver circuit that derives its DC power from AC mains hum and noise it picks up on its...

The idea of powering a low power receiver, or even a transceiver or QRPp beacon, from free, otherwise wasted, RF energy that is all around u...