standards and guidelines for communication sites - Radio And ...

STANDARDS AND GUIDELINES FOR COMMUNICATION SITES DEFINITIONS OF COMMUNICATIONS EQUIPMENT SITES
TABLE 3-1 STANDARD DEFINITIONS OF COMMUNICATIONS EQUIPMENT SITES (CONTINUED)
Site Type Description Notes
Shelter A permanent structure built on a foundation that contains
communications equipment and related ancillary support
systems. A shelter shall be suitable for temporary or
permanent human occupancy during equipment installation,
maintenance, and use.
Example: (See Figure 3-1.) A prefabricated building,
usually located with a tower or rooftop antenna system,
which houses equipment related only to over-the-air
communications. The shelter supports personnel only on a
limited basis for installation and maintenance functions; a
dispatch center would be located elsewhere in this case.
Cabinet/
Enclosure
An enclosure that houses communications equipment and
ancillary systems only, designed such that equipment
contained within can be accessed without the need for
personnel to enter the cabinet. An enclosure is typically prewired
and its equipment is pre-installed.
Example: (See Figure 3-2 and Figure 3-4.) An unmanned,
weather-tight enclosure.
Consists of smaller buildings or prefabricated
shelters containing only equipment directly related
to the function of the site. A shelter is intended for
human occupancy only during equipment
installation and maintenance.
The Motorola Standard Building (MSB) is a
predesigned all-inclusive self-contained equipment
shelter.
FIGURE 3-1 TYPICAL PRE-FABRICATED
EQUIPMENT SHELTER
A cabinet/enclosure can be installed indoors or
outdoors, placed on a small foundation, or wall/pole
mounted.
A cabinet installed indoors uses the existing building
environment (heat and air conditioning) to maintain
temperature requirements. An outdoor cabinet
contains its own environmental controls.
FIGURE 3-2 METAL SHIPPING CONTAINER
ENCLOSURE
68P81089E50-B 9/1/05 3-3