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Technical Site Survey & RF Analysis

Commsecinc provides site development services to enable proper construction and placement of RF equipment. These services involve determining the space, power, and cabling requirements for installation. Our professionals work with the customer and landlord or building manager to provide the most cost-effective, safe, and unobtrusive deployment of radio equipment at the site. Strict adherence to local, state, and federal regulatory agency requirements in addition to RF safety standards are ensured.


On-Site Survey

Following the preliminary planning, the next step in implementing a communications system is to perform an on-site survey. The object of the microwave site survey is to develop the geographical and physical framework for the network such that the established communications requirements can be met satisfactorily. The elements of a comprehensive site survey include:

   The identification and location of potential terminals and repeater sites through the use of geological maps.

   The collection of site data for each potential location leading to a full description of each site.

   The determination of the relative elevation of natural terrain and obstacles between interconnected sites through a topographical map study.

   Conducting a field survey to corroborate the results of the map study, eliminating less than optimum site locations, and identifying potential problems, peculiar items (man-made obstacles) not evident from the map study.

   The final selection of sites, together with the formulation of final site and path data.

The accuracy of these reports is determined by the care taken to describe the certain fundamental site and path parameters. These include, items found on topographical maps and site visitation. The accuracy of the items listed below is a function of the surveyor ability to read maps and determine site conditions. The field study provides the basis upon which system parameters are established, performance calculations are made and analyses are conducted.


RF Analysis Key Benefits

   All variables are analyzed in concert

   Reliability is quantified

   Outages can be predicted

Route design is the development of an over-all strategy for laying out a microwave route. The key objective of a good plan is to select sites that are acceptable form a technical standpoint as well as from cost and other non-technical considerations. Many factors affect site selection. The wise designer attempts to eliminate all risk of a site being rejected subsequent to the initial survey. The following preliminary steps assume that all the circuit requirements have been fully analyzed.

   Select radio locations, and if possible designate tall buildings for tower placement where feasible.

   Examine the topology between terminal sites on large-scale maps for potential routings to avoid obstructions.

   Select tentative routing, taking advantage of existing mountainous terrain for height advantages if a repeater point is required.

   Determine whether the radio locations are near existing stations in the same microwave bands and plan to use alternate frequencies or other bands.

   Obtain aeronautical maps of the area for identifying the location of airports. Topographical and aeronautical maps may be obtained at various map canters throughout the country.


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