Not necessarily ham radio related, but may be interesting...
xssfox is hacking on cursed software, hardware and everything in between.
Not necessarily ham radio related, but may be interesting to check in on every so often. Found in the ham furs telegram group.
4:1 balun, among other things!
Interesting website with details on making a 4:1 balun among other ratios and types.
HF/VHF Diplexer
Project by KA6WKE, a diplexer for HF/VHF. Might be useful for those wanting to use a single coax out of the shack to a setup like a six meter ground plane and HF dipole. Check it out here!