Topband: Balanced Line Radiation

[i4jmy@iol.it]

The unbalance of a balanced line connected to a balanced load (dipole) 
is generally small, expecially if the line runs free and vertically.
If the spacing between conductors is not comparable with WL, the 
radiation is then quite neglectable.
The radiation is instead much more pronounced when a coaxial line 
(unbalanced) is connected directly to a balanced load (dipole) and the 
phisical coax outher lenght is not proper to behave like a current 
balun.
The latter is frequent (think to dipoles and sloping dipoles) and the 
final effect, toghether an hot shack, is a big response to signals at 
unwanted angles, headings and polarization.

73,
Mauri I4JMY


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