[Elecraft] HF Verticals?

[Charles Greene]

Stuart and All,

There is a treatment of elevated ground in Moxon, chapter 10.  It is also 
covered in the ARRL Antenna Book , chapter 3.  There is an article in The 
Antenna Compendium #6, page 89 which uses ray tracing much like sonar on 
the path from Hawaii to Ca on 14 meters, but this is far field and has 
nothing to do with elevated locations.

At 07:27 PM 10/18/2002 -0500, Stuart Rohre wrote:
>Earl, there have been a number of papers on improved radio locations from
>operating from elevated ground.  I wish I could remember the paper, but
>there is one I have seen with the ray traces to show the signals
>improvement.
>The signal can go from the antenna toward ground, but if on a hill, the
>reflection happens at lower ground and they get a nice low angle of takeoff
>on the reflection, lower than the flat ground case.
>Locally, NT5C has had much good success from his hill, compared to my valley
>location.
>
>The paper I remember, had both operating measurements and modeling of the
>paths, supported by the operational experience.  Sorry I cannot remember
>where I saw it, but might be QST or CQ, or QEX,  even Communications
>Quarterly.
>
>We see the same thing in sonar measurements off reflections in a depression
>below the sonar source.
>It is proven Physics.
>73, Stuart K5KVH


73, Chas, W1CG
K2 #462