**Balun is an electrical device that converts between a balanced signal and an unbalanced signal**
- to match the dipole (impedance 73 Ohm) using a transformer 1:1.5 - 73/1.5 = 48.7 Ohm;
- to match the folder dipole (impedance 292 Ohm) using a transformer 1:1.5 - 292/1.5 = 194.7 Ohm and transformer 1:0.25 - 194.7*0.25 = 48.7 Ohm.
- for Cable pressure connector;
- for Cable soldering...