On Mon, Jan 20, 2003 at 08:35:10PM -0800, Greg DesBrisay wrote:
> On Mon, 2003-01-20 at 15:04, Tim Pozar wrote:
> > And it doesn't take into account refraction and curvature of the earth.
>
> That's absolutely right. You have do curvature and Fresnel-zone
> clearance calculations by hand with simple topo-map software. I have a
> spreadsheet handy that I use for that. There's nicer propagation
> analysis software that does all that for you of course.
Earth curvature and Fresnel-zone are, of course critical, but
refrection is also an issue. I have yet to find a freebie
radio-propagation software package (except RadioMobile) that does
this.
Tim
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