5.0 Link Planning; Frequency/Path Planning; Site Selection; Licensing - Trango Systems TrangoLINK GigaPlus User Manual

5.0 Link Planning

This section describes the process that occurs before installing and setting up an
GigaPlus microwave backhaul link

Frequency/Path Planning

Most microwave links use licensed spectrum that requires third party coordination to
ensure minimal interference will occur to nearby licensed spectrum users. To ensure
success, a path analysis must be done for each link that is being considered. Antenna
heights, system gain, rain region and terrain data are evaluated to determine the
reliability of the link over time and changing weather.
Trango will run path analysis for its customers using industry standard software,
evaluate different equipment options to achieve the customer goals, and assist the
coordination process.

Site Selection

After the Planning phase is complete, it is essential that the proposed site be physically
evaluated by the operator to ensure that no buildings or vegetation has crossed into the
Fresnel zone that would affect operational reliability.
It is not uncommon for tall buildings to be located in what would otherwise be a perfect
non blocked line of sight path based on terrain data, but too often this is discovered
when the installation is being performed.
The site must also be evaluated for power and shelter provisions.

Licensing

Licensing of spectrum is typically done on an individual path basis. In the US, the FCC will
grant licenses for 11 years for paths that do not interfere with other users after the
coordination and fees have been paid.
Contact Trango for more information on the above topics.
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Trango Systems, Inc. GigaPlus User Manual Rev 3.1