Some of my projects on this blog are inspired by the radiowork of Roger, G3XBM. I like his transverter designs in particular.
I found that Roger collected a lot of his work in his Project Scrapbook (currently issue 5). It contains a lot of nice experimental data and good projects.
You can find the scrapbook here:
https://sites.google.com/view/g3xbm4/book
Hope you like the scrapbook as much as I do.