EI9ITB RF Zone is the online shack log and notebook of Karl Matthias, EI9ITB, operating from Dublin, Ireland. Licensed since 2022.
The main focus here is ham radio electronics and radio homebrew — designing, building, and experimenting with RF circuits and radio gear. You’ll also find notes on antenna projects, band conditions, digital modes, and whatever else comes across the bench.
Contact
The best way to reach me is on the air. 73 de EI9ITB!