[TowerTalk] vertical vs horizontal--a different take

[Jim Lux]

At 04:26 AM 11/12/2006, Jim Jarvis wrote:


>K8RI's post on this topic finally prompted me to raise a
>question that's been bothering me for some time.
>
>
>Why is powerline noise vertically polarized?  Power lines are
>horizontal.  Yes, it's true that there are vertical runs to
>ground, every few poles.  But why is the noise assumed to be
>vertically polarized?


Rick Karlquist posted an excellent discussion on this a couple weeks 
ago, when was wondering exactly the same thing.

It's not that the noise source is H or V pol, it's that for 
ground/surface wave propagation, H pol is strongly attenuated, so 
that by the time it gets to your antenna, it's all V pol.

Jim