"Szczepan Bialek" wrote in message
...

Faraday wrote in 1846 that to have the polarized waves you must use the
two or more sources.

To have the linear polarization we are using the dipole.
To have the circular polarization we are using the two dipoles.

The above is easy to "determine at a distance what kind of antenna was
used to transmit the wave."

But is the another phenomenon. The Luxembourg effect.
The dipole radiate the doubled frequency.
S*

Ah yes - the famous "is it a dipole or is it a dipole?" test. Of course, it
wouldn't discriminate between a dipole and a yagi (staggered or phased?)

Luxembourg effect? Harmonics?