Open-source boards designed in KiCad by Ttl on GitHub, from 4 repositories. A board’s address here is its repository’s there.
Ttl/vna2
Second version of homemade 30 MHz - 6 GHz VNA
Ttl/fmcw2
FMCW radar design files
Ttl/vna
Homemade 30 MHZ - 6 GHz single receiver VNA design files.
Ttl/detector
RF power detector board design files