Here’s an awesome really basic receiver you can homebrew with bits from your junk box.
The very simple receiver for the whole shortwave band. Regenerative control, tuning, band selection, it has everything. Even a fine tuning by moving your hand towards the coil!
Read more at the authors website.
As noted by Charley VK2ZYZ:
This rig will never be you main rig, it is just a novelty but it is a blast, if you have a junk box and an hour to kill give it a go, build one with the grandkids.
Something for a rainy day in the shack.