We are deploying AP3865e with WS-AO-DX07180N antennas. I need some guidance about how to deploy antennas. I looked to H-Plane/E-Plane . Horizontal Beamwidth is easy to understand but vertical beamwidth is 40 degree. So What should I understand from this? We are planning to install them on top of building corners. The buildings has four floors and its about 15-16meters high. So with 40 degree V-beam, will it be too high for this antenna? Should we need to down tilt antennas or should we install them lower floor walls (this will be real pain)?
Also in open area, what is the range for this AP/Antenna combination for reliable client connections?
Any suggestions are most welcome.