I need to connect two buildings with a wireless link. I plan on using a Breezenet (now Alravion) Pro-11 access point at one end, and the Breezenet Pro-11 wireless bridge on the other end.
Why these units? Because I have them, they have good specs, will suit my need, and aren't currently being used. They use frequency hopping spread spectrum.
I plan on using Cisco a yagi 13.5dBi antenna at each end.
The distance is 4.2 miles. I plan on mounting the antenna on a mast on a tripod on top of the roof of each building to clear the trees so that I will have line of sight.
The question is, will these be enough to cover that distance?
Obviously, higher gain antenna's will help, but with larger antenna's comes more wind loading. I would like to have the radio's mounted inside the building, but the attenuation on the coax may limit the signal, so I may have to make provisions to mount the radio in a weather proof box at or near the antenna.
Breezenet Pro-11 
Linear Mode
