During the summer break, it became quiet here on my blog. While Instead of chilling at the beach, I spend a lot of time on new Hardware and Software projects. Most of them are done, and now it’s time to document them. In this blog post, I want to share the construction of a versatile 4:1 Balun. In combination with a ladder line and an automatic Antenna tuner, you can use any dipole on almost all frequencies.