User's Manual

Installation
User's Guide 2-6 BreezeNET BU-DS.11/RB-DS.11
2.6 Outdoor Installation Considerations
This chapter describes various considerations to take into account when planning an
outdoor installation including site selection, antenna alignment, antenna polarization,
antenna seal, and cell size.
2.6.1 Co-locating DS.11 Outdoor Units
Up to 3 BU-DS.11 or RB-DS.11 units can be co-located on the same building top or
tower. Each unit is assigned to one of the non-overlapping channels, 1, 6, or 11.
When co-locating outdoor units on the same building top or tower, the antennas
should be mounted at least 2 feet apart when using UNI-16’s, 15 feet when using UNI-
24’s, and 75 feet when using OMNI-8’s. For omni antennas, the maximum link
distance is reduced by up to 50%. Greater separation will improve the link distance.
2.6.2 Site Selection Factors
When selecting a location for external antennas, remember to take into consideration
the following guidelines:
•1 Minimum distance between sites
•2 Maximum height above the ground
•3 Maximum line of sight clearance
Path of Clearest Propagation
A propagation path is the path that signals traverse between the antennas of any two
bridges. The “line” between two antenna sites is an imaginary straight line, which may
be drawn between the two antennas. Any obstacles in the path of the “line” degrade the
propagation path. The best propagation path is, therefore, a clear line of sight with
good clearance between the “line” and any physical obstacle.