We are looking at implementing a building to building long range wireless connection between our head office and a second site. the site is 7.5 KM (5 miles) away we are looking at using a 3com wireless device with a rated range of 15 KM, But I need to determine if I have line of site between the 2 locations to ensure a reliable connection.
Does anyone have any eperience with this? I need to know how one would go about determining if they have line of site. Is there a company one can call who will come out and do a test with special equipment. or is going on the roof with a pair of high power binoculars and simply seeing if I can see the roof of the other building good enough.
I have never connected two sites over this kind of distance before and would like some input from someone who may have done this before.