[TowerTalk] HFTA question

[David J. Sourdis - HK1A]

There's a hill that is about 27 meters (90 ft) above the flat surrounding terrain. Caribbean sea shore is less than two kilometers from this hill.

I guess there is a minimum distance of wavelenghts of sloping terrain required to take
advantage of such topography regarding antenna take-off angles and HFTA.

In the desired azimuths for contesting, the slopes range (tricky eye guessing) between 25 and 45 degrees (46% to 100% slope) referenced to the horizontal.

I wonder if it is worth to do some surveying for terrain profiling on said hill for HFTA analysis or should I just don't bother because the hill's height is not enough and/or its slope to the flat terrain is too short.

 
73

David  
HK1A
EC5KXA

 		 	   		  
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