Antenna System - Cisco AIR-BR350-A-K9 - Aironet 350 Wireless Bridge Hardware Installation Manual

Antenna System

Antenna System
Deciding which antenna to use involves many factors such as coverage area, maximum distance, indoor
location, outdoor location, and antenna height.
In most situations, a detailed site survey along with an antenna calculation are recommended before
Note
purchasing a bridge antenna system.
Table 1
Table 1
Antenna Type
Omnidirectional 2.2 dBi antenna
Omnidirectional 5.2 dBi antenna
Directional high-gain Yagi antenna
Directional parabolic dish antenna
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
provides typical maximum communication distances between a pair of the same style antennas.
Maximum Antenna Distances
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
Appendix C Antenna Basics
OL-1412-01