B.A.R.S.
Berwick Amateur Radio Society
Susquehanna
Valley MESH Network
C.M.A.R.C.
Columbia Montour Amateur Radio Club

               
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This is a great tool for figuring your propagation using Ubiquiti products

http://airlink.ubnt.com/

Once you start to build your MESH network you will need to know if you can make a point to point connection.  Google Earth is a great tool to get co-ordinates for each station's location.  Once you have the locations you will want to know if you have an unobstructed view of your target.  Ubiquiti has a great tool on their web site that uses Google Earth to check your path and do an elevation profile.  You can select different products and have a good idea how your equipment will perform before you deploy it.

In the example snapshot below you can see the path and calculations that are done between KC3APN and the WC3H tower site.  Note the elevation profile on the top left.  Fresnel lobe is also shown, along with signal strength and expected link quality and speed.

In this example I used my street address for 'station 1', and GPS co-ordinates for the WC3H tower (41.036532, -76.085643‎) as 'station 2'.  Both stations use AirGrid M2 20db.


A
ntenna pointing info from WC3H repeater
 

WC3H
Bearing    263.3° W (from WC3H repeater)
Distance     17.7 mi ( 28.5 km)
 
KC3APN
Bearing    280.7° W (from WC3H repeater)
Distance     7.6 mi ( 12.3 km)
 
N3TQK
Bearing    294.4° WNW (from WC3H repeater)
Distance     5.2 mi ( 8.4 km)
 
K3BS
Bearing    105.5° ESE (from WC3H repeater)
Distance     4.2 mi ( 6.7 km)
 
W3RC
Bearing    98.0° E (from WC3H repeater)
Distance     9.9 mi ( 15.9 km)
 
W3HZL
Bearing    142.2° SE (from WC3H repeater)
Distance     10.6 mi ( 17.0 km)
 
K3IJ
Bearing    120.4° ESE (from WC3H repeater)
Distance     8.8 mi ( 14.2 km)
 
W3JSW
Bearing    281.9° WNW (from WC3H repeater)
Distance     20.8 mi ( 33.4 km)
 
KC3BAL
Bearing    338.6° NNW (from WC3H repeater)
Distance     7.8 mi ( 12.6 km)
 
WB3FKQ
Bearing     5.4° N (from WC3H repeater)
Distance     7.0 mi ( 11.3 km)
 
N3TSS
Bearing    52.9° NE (from WC3H repeater)
Distance     11.3 mi ( 18.2 km)
 
W3SJI
Bearing    98.3° E (from WC3H repeater)
Distance     9.1 mi ( 14.6 km)