Chapter 3: System planning
Planning for connectorized units
Page 3-31
Planning for connectorized units
This section describes factors to be taken into account when planning to use connectorized
ODUs with external antennas in PTP 550 links.
When to install connectorized units
The majority of radio links can be successfully deployed with the integrated ODU. However, the
integrated units may not be sufficient in some areas, for example:
•
Where the path is heavily obscured by dense woodland on an NLOS link.
•
Where long LOS links (>23 km or >14 miles) are required.
•
Where there are known to be high levels of interference.
LINKPlanner can be used to identify these areas of marginal performance.
In these areas, connectorized ODUs and external antennas should be used.
Choosing external antennas
When selecting external antennas, consider the following factors:
•
The required antenna gain.
•
Ease of mounting and alignment.
•
Antenna polarization:
o
For a simple installation process, select one dual-polarization antenna (as the integrated
antenna) at each end.
Note
Enter the antenna gain and cable loss into the Installation Wizard, if the country
selected has an EIRP limit, the corresponding maximum transmit power will be
calculated automatically by the unit.
