User's Manual

WLS Installation and Maintenance Manual Equipment Description
Geometrix
®
Wireless Location System 5
Andrew Corporation Proprietary
Figure 1-6 shows the GPS antenna splitter and associated mounting bracket.
Figure 1-6 GPS Antenna Splitter
1.3 AOA RFDU and Antenna Switch
The RFDU is a set of 4 filter amplifiers designed to support AOA installations. AOA installations
require panel antennas separate from the normal receive antennas, and thus require their own
preamps and signal conditioning.
For sites employing a single AOA panel, the panel connects directly to the RFDU. For sites
employing multiple AOA panels, an external antenna switch provides the ability to connect up to
three AOA panels to a single RFDU. Installations using this external switch will use WLS units
without an internal switch. Power and control for the external switch is provided by the WLS.