Yes, the single ray (for the sake of argument) that travels from A to B
is monochromatic, but it isn't infinitely thin in terms of it's
interaction with surroundings. That single "ray" is energy traveling
with a spatial density (in terms of it's interaction with surroundings)
that is a function of it's wavelength. A "ray" passing within a
wavelength or few of a physical feature is going to be influenced by
that feature in a manner that is a function of its conductivity,
dielectric constant, physical shape, and the incident angle. My
proposition is that since the shape of a feature (relative to a
wavelength) as seen by the ray isn't necessarily the same going in both
directions, the paths taken aren't necessarily the same.
Dave AB7E
Jim Lux wrote:
>
> As far as propagation through the air/over edges goes, your radio signal
> is monochromatic.
>
> And, it's only one ray that's propagating from here to there. Yes, you
> launch many rays, but most don't go to there. So, it still does work.
>
> Multipath does occur, but each of the individual paths is reciprocal at
> any given instant. They just change relative to each other
> (particularly on skywave) so you get frequency selective fading.
>
>
>
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
>
>
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|