After having used the amazing VNWA3SE Automatic 2 Port VNA from DG8SAQ for several years now, I needed an upgrade to be able to better calibrate my antenna duplexer.
After reasearching quite a bit I found the LibreVNA, a 100khz-6Ghz VNA with a dynamic range of ~ 100dB also designed as an OpenSource project here in Germany by Jan Käberich
I ordered one from the great guys at Eleshop.de and got it delivered to my home within 2 days!
I’ve been working and learning with this VNA now for a few days and I just love it.
Here are 2 examples of tuning a duplexer for my new M17 / DMR Multimode repeater DB0FZ:
