Coax and Transformer Balun Design Explained [updated version]

Explanation of the principle of a transformer and a coax baluns.

Wikimedia pictures used:

[sahhaf]

I claim: this is the only understandable explanation of baluns in the whole internet...

[tritile]

This is the clearest explanation I have seen so far. Thank you! Please, keep doing videos like this!

[npu]

You are my man for a quick explain for what a balun is 🤞

[FlyingBullets]

You made the topic so simple, i finally understood.

[rocklicker]

Finally an explanation that I understand. Thank you!

[unit]

Wow. Baluns actually do make sense after all!

[ThePirateZombie]

this is the first video, which has a animation which makes in possible for understanding it as a beginner! thanks!!!

[Fred-B]

Thank you for the clearest explanation I have found so far.

[herrmannek]

Great video... Best Balun video in the internets :)

[WilliamSwartzendruber]

You, sir, have answered my novice questions about this matter. You get a like and a subscribe.

[electrifyingvids]

Excellent video! This video really helped me understand the concepts of balUns more.

[drankurbaruah]

What a bloody awesome video!!!

Thank you so much!!!

[JulietNovember]

Great video! I finally understood the concepts with your explanation. Thank you!

[johnygoode]

I finally understand what Baluns are, thank you very much for the visuals and simple explanation! Very helpful!

[Papiertiger]

Very good and easy to understand visualisation of the BalUn working principle!

[sahhaf]

baluns were a mystery to me until now. I wish you had also discussed impedance matching.

[goedeck]

Thank you. A lot of other videos by hams seem to assume the viewer know more than the viewer does. I guess the main reason to use a balun is because coax is a much more versatile feed than paired wires.

[poorman-trending]

Top quality. Can you do one on how antenna tuners work?

[CharlieVictor]

Why can’t one connect the coaxial feed-line shield to one side of the dipole? It seems to me that your difference between unbalanced and balanced is one of perspective. If you attached a current measuring device with its common (reference) lead to one side of the dipole and its measurement lead to the of the other side then would you not see the signal? The same thing if you hooked a voltage measuring device to the ends of the antenna. I guess if your feed-line shield was connected to earth ground then that might cause the antenna setup grief.

[filippaul]

First of all nice video,
but I think you are mixing up differential pairs and the reason, why balun is used with antennas... When balun is used with a dipole, it is trying to solve the problem with currents, that flow at the outer side of the outer coax conductor (and yes, for RF the outer conductor in coax acts like it has an inner and outer side..). These currents can cause problems with directivity etc...