Cisco AIR-BR350-E-K9 Hardware Installation Guide - Page 68

Antenna System Appendix C Antenna Basics Antenna System Deciding which antenna to use involves many factors such as coverage area, maximum distance, indoor location, outdoor location, and antenna height. Note In most situations, a detailed site survey along with an antenna calculation are recommended before purchasing a bridge antenna system. Table 1 provides typical maximum communication distances between a pair of the same style antennas. Table 1 Maximum Antenna Distances Antenna Type Omnidirectional 2.2 dBi antenna Omnidirectional 5.2 dBi antenna Directional high-gain Yagi antenna Directional parabolic dish antenna Distance Indoor-350 ft at 1 Mbps Outdoor-2000 ft at 1 Mbps 5000 ft at 2 Mbps data rate 6.5 miles at 2 Mbps data rate 25 miles at 2 Mbps data rate When antennas are used indoors, the building construction, ceiling height, and internal obstructions must be considered. In outdoor environments, obstructions such as trees, vehicles, buildings, and hills must be considered. Distance is a primary factor when using bridge-to-bridge communications; however, coverage area also becomes important when you are using wireless client devices to communicate with the bridge. Cisco Aironet 350 Series Bridge Hardware Installation Guide C-2 OL-1412-01