This is my first foray into the wireless world so suggestions, RTFMs, etc are more than welcome. I have been reading the forums and web and know that I need to do my LOS and RFLOS calculations.
Here is what I have gathered about my topography:
Site A: 4376 feet elevation
Site B: 4361 feet elevation
Obstacle: 4400 feet elevation highest point
Distance from Site A to Site B: 2.64 miles
Distance from Site A to Obstacle: 1.05 miles
Distance from Site B to Obstacle: 1.59 miles
I ran
this fresnel calculator and was told that my 1st Fresnel Zone is 36 ft. and the 60% level is 30 ft.
I am assuming this means I need 30 ft of free space from the radio waves to the obstacle at the point which the waves pass over the obstacle. So, if Site A is 4376 ft, I would need a 24 ft mast to get LOS and then an additional 30 ft to obtain RFLOS. Are my assumptions about the information from the calculator correct? Do I need a 54 ft mast?
*Note about the obstacle. It is the tail end of a hill with a not too steep slope. The hill is barren with light growth of scrub grass, no trees, and no major rock outcroppings. Does the type of obstacle make a difference in the calculation of RFLOS? Perhaps my mast does not need to be as high as I have calculated?
See attached picture for an overhead view of the site.
Thanks for any help,
Raklet