User's Guide

Quantum 2200 Installation Guide v2.1
Page 25
6 Installing the GPS Antenna
WiMAX base stations utilize GPS (the Global Positioning System) to maintain tight synchronization and
coordination among themselves in a network. This assures that all base stations in the network transmit
and receive in harmony, as they must all utilize the same Downlink / Uplink Ratio.
6.1 Selecting and Mounting a GPS Antenna
PureWave Quantum Base Stations incorporate an integrated GPS receiver which must be connected to
an external GPS antenna view of a number of GPS satellites. Installation location flexibility and the
amount of tolerable obstruction are heavily dependent upon the quality and capabilities of the chosen
antenna.
The choice of GPS antenna is an important one, as there are many models available in the
market for many purposes, and hence some are very inexpensive but also low gain and/or
low quality. A poor GPS antenna can easily become the point of failure of your system.
PureWave strongly recommends the use of a high-quality GPS antenna and therefore offers an optional
GPS Antenna Kit, featuring a GPS antenna with integrated 40dB low-noise amplifier and mount kit
(Figure 14).
Figure 14: Optional GPS Antenna and Mounting Kit
If you have ordered the GPS Antenna Kit it was shipped in the same box as the base station. The
optional GPS Antenna Kit it includes all required mounting hardware and instructions and we refer the
installer to that documentation for secure and proper installation. Similarly, if an alternative GPS
antenna has been chosen, please refer to the instructions provided by the manufacturer for proper
mounting procedures.