Black Box LW0050A Manual page 81

There are three types of Single-Cell Configuration:
• Point-to-Point
• Point-to-Multipoint
• Mobile Applications
Each type is explained in the following sections.
5.1.1.1 P - -P
OINT TO
Point-to-Point installations require directional antennas at either end of the link.
To select the best antenna for a specific application, consider the following factors:
• Distance between sites
• Required throughput
• Clearance between sites
• Cable length.
5.1.1.2 P - -M
OINT TO
Point-to-Multipoint applications consist of one or more Access Points at the central
site and several remote stations and bridges. In this case, use a 6-dBi
Omnidirectional Antenna (LW011A) with the Access Point because of its 360°
radiation pattern. In the United States, the 7.2-dBi Omnidirectional Antenna,
LW0029-R2 (which also has a 360° radiation pattern but has a wider range), can
also be used. The 7.2-dBi Omnidirectional antenna comes with a 20-ft. low-loss
cable and a mast mount bracket for rooftop installations.
The remote units should use directional antennas aimed in the direction of the
Access Point's antenna(s).
5.1.1.3 M A
OBILE PPLICATIONS
In mobile applications, station orientation changes continuously. In order to
maintain connectivity throughout the entire coverage area, most mobile
applications require omnidirectional antennas for both Access Points and wireless
stations. In a motor vehicle, for example, you can install a Single-Port Station
Adapter in the cabin, and mount the antenna (in most cases a LW016A
Omnidirectional Antenna) on the roof.
CHAPTER 5: Planning and Installing Wireless LANs
OINT
ULTIPOINT
79