Re: Great Circle Antenna Pointing Question

Go to this page and download "azmap2.zip"
http://www.westteam.uznam.net.pl/ftp.htm
It is an Azimuthal-Equidistance Map Generator v.3.7
It is free and will give you a reloadable map with
degree's and distance from anywhere on Earth to anywhere on Earth.


"Robert11" <rgsros@xxxxxxxxx> wrote:

>Hello:
>
>A bit confused over Great Circle directions.
>
>I believe that if one is traveling from Boston to London via air along the
>great circle connecting these two cities, he would Constantly have to adjust
>his heading; e.g., one compass
>heading the whole way won't do it.
>
>Is this correct ?
>
>So, now to my real question"
>
>Let's say that there is an omni broadcast station in London, and that its
>broadcast goes out in all directions.
>
>I believe radio waves follow great circles when considering a spherical
>globe.
>True ?
>
>Then, how would the chap in Boston, assuming he has an extremely directional
>antenna, point his antenna ?
>
>Would it just be the final angle along the great circle when it crosses
>Boston ?
>
>Looked, but surprisingly couldn't find any good links to any great circle
>direction programs on the web.
>Lots that calculate distances, but couldn't locate any that show distances,
>etc., relative to my questions above.
>
>Anyone happen to know of any ?
>
>Much thanks,
>Bob
>

.

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