Hello today we will do a balun 4: 1 for asymmetric dipole.
It is time up to me to make an “adult” antenna I stopped at such a calculation.
As you can see it requires a transformer that reduces the resistance of the antenna by 4 times from 200 ohms to 50 ohm transformer this name is “Balun”.
I bought toroid rings http://www.ferrite.com.ua/.
We test at a load of 200 ohms.
Everything is normal let’s asseble it PVC pipe case.
Seal upper contacts using rubber linings.
Here the result.
Installed on it’s workplace.