scottmac Mon, 04/06/2009 - 13:22
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A GPS, Compass, and a good map.


GO to the first location and set a waypoint in the GPS, then go to the second location and tell the GPS to "go to " the first waypoint.


The GPS will point and/or give you a bearing. Point your compass to that bearing while it sits on the map ... draw your line, set your sights, and aim the dish (don't forget the magnetic deviation) from "true" North.


Watch for differences in elevation too (different height buildings, hills, etc), sometime you have to add some elevation / declination in addition to having the correct azimuth.


If you can get a good topo or aviation map, it'll give you altitudes too, then you only have to account for the building height.


Good Luck

Scott


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