Do antennas need line of sight to function?
A. The antennas that connect to a bridge need not only visual line of sight, but also radio line of sight. Radio line of sight includes an elliptical region around the visual line of sight called the Fresnel zone. For optimal performance, make sure the Fresnel zone is clear of all obstructions like trees, power lines, buildings, and geographic obstacles. Refer to Troubleshooting Connectivity in a Wireless LAN Network for more information.