Why do VHF antennas perform without an adapter balun?
Most of the transmitted VHF signals reach the antennas with such a high level that the antennas do not need an adapter.
These signals still have the required C/N ratio despite the mismatching.
However if you want minimise the ghosting effects or any other problems, we strongly recommend the installation of VHF adapter baluns (ref. 4010) in the antenna junction box.