Exactly. And the corollary is that DX signals, coming down from the
ionosphere, do not suffer this horizontal attenuation. This is why a
horizontally polarized antenna receive skywave signals just fine but
receives very little locally generated groundwave.
This is what leads to hams saying a vertical is "noisier" or a
horizontal is "quieter", but technically that isn't really true. The
real difference is the amount of noise that reaches the antenna in the
first place, not whether the antenna "picks it up" or not.
Bill, W6WRT
------------ ORIGINAL MESSAGE ------------
On Sun, 12 Nov 2006 06:47:24 -0800, Jim Lux <jimlux@earthlink.net>
wrote:
>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
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