DIY Electronics - Radio Receiver

M. Simon over at Power and Control is building a classical radio receiver - a regenerative. These are hard to tune (you are close to a threshold where crossing over gives you a loud squeal) but the sensitivity and the precision of tuning is excellent for what amounts to a fairly simple circuit. DIY stands for Do-It-Yourself which is unfortunately not that common these days... There is a good description of the project plus lots and lots of links to other circuits and explanations of theory. If you wanted to build a small short-wave receiver from scratch, this would be a very good place to start. I had a nephew visit last summer and he and I built one of these kits from Ramsey Electronics. It is a superheterodyne receiver - the design that followed the regenerative (more complex, softer tuning but easier to operate) and he is having a blast with it, picking up Chinese and Spanish broadcasts.