[Antennas] balun and dipole question

Fri Dec 9 13:52:45 EST 2005

At 08:44 AM 12/9/2005, Alex wrote:
>As for the balun itself: what you need is a current choke balun , so as to
>reduce possible unbalanced currents on the line. The lower they are the less
>line radiation will be.
>This is the gospel of W2DU and my humble experience.

The problem is that no one balun design will cover all the bases. A current 
balun works best only when the differential impedances are low, while a 
voltage balun will tolerate a wider impedance range, however, it does not 
perform as well as a current balun for unbalanced loads. There is a very 
interesting article on this subject in the Sept/Qct 2005 issue of QEX which 
is available on the members only section ARRL web site. 
http://www.arrl.org/qex/2005/qx9roos.pdf
73,
Danny, K6MHE
http://k6mhe.com/
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