Nortel DCT1900 Technical Product Manual page 235

locations where coverage area and range need to be optimized, it is important to mount Base
Stations several wavelengths (~6-18") away from building surfaces, and in the case of large metal
building surfaces, absolutely imperative.
The components within the Outdoor Base Station Mounting Kit provide this needed functionality.
The key components consist of two Mounting Plates and two Mounting Arms. The Small-Pattern
Mounting Plate is always used on the weatherproof housing (to avoid placing too much metal near
the Base Station). The Large-Pattern Mounting Plate is secured to the building surface. It has a
larger surface area with several hole spacings for flexibility in mounting on varied and irregular
building surfaces. The Mounting Arms are supplied in 3 lengths depending on the application
need. The combinations of these components provide the installer the ability to securely mount the
housing on almost any axis or location, as can be seen in Figure 16-12.
Building
Side
View
Building surfaces and
architectural shapes present
challenges for mounting.
This mounting system
provides a wide variety of
options for positioning and
mounting the Base Stations.
In many outdoor and campus applications, coverage is a major issue. To minimize the number of
Base Stations, they need to be strategically placed to create the best overlapping radio cells. For
example, it is common to place Base Stations at the corners of tall buildings to capitalize on the
omnidirectional radiation characteristics of the unit. The Mounting Kit provides this capability.
Mounting Instructions
1. Secure Large Pattern Mounting Plate to the Building Surface
The mounting plates and arm are made of lightweight aluminum, and the Weatherproof
Housing (including the Base Station) weighs approximately 7 lbs. To insure structural integrity
and safety, the mounting plate must be secured firmly to the building surface using at least
four of the 3/8" dia. stainless steel fasteners provided in the kit.
Install-DCT1900/R8/mw
© 2000-2005
Weatherproof
Housing
Base Station
Mounting
Arm and
Plates
Building
Top View
Approximate dimensions
12.0
shown. Housing sizes vary
according to supplier
6.0
Fig. 16-12 Mounting Views
Technical Product Manual - DCT1900
Installation Instructions, Base Station – KRC 101 1371
Corner
Corner mounting
capitalizes on
omnidirectional
radiation pattern from
Base Station, avoiding
"blind spots" around
building corners.
16-13