Telamon wrote:
...
Well, I think you mean noise currents. The signals the single element
antenna picks up are also common mode.

Here the voltage type UNUN has the advantage of DC isolation between the
...

Balun = "BALanced-to-UNbalanced"

Unun = "UNbalanced-to-UNbalanced"

What type of antenna you are feed AND what type of feed your
rcvr/xmitter expects SOLELY determines if you should use a balun or a
unun ...

Regards,
JS