Antenna Heights Module
 
This module determines the antenna heights which satisfy a clearance criteria specified as an earth radius factor (K), a percentage of the first Fresnel zone radius and an optional fixed height. Two separate clearance criteria can be specified for both main and diversity antennas. 

The antenna heights can be varied in any combination or the heights can be optimized based on the minimum value of the sum of the squares of the antenna heights. 
 
 
 
 
 
 
 
 
 
Special Features

Structures

 The location of the critical points may not be evident when the profile was created in the Terrain Data module. A structure can be added, edited or even moved directly in the Antenna Heights module.

Calculating clearance on an existing path

The clearance criteria on an existing path can be determined interactively by entering a value of K or a percent of the first Fresnel zone radius. The other parameter will be calculated over the entire path.

Clearance display

The clearance can be displayed at any point detailing the contributions of the controlling clearance criteria.

Clearance and Orientation Reports

These reports show all points which are within a specified tolerance of the clearance criteria. The azimuthal and vertical angles are given along with the variation of the vertical angle for a range of values of K.

Antenna height tradeoff reports

The antenna height at one site is varied in fixed increments and the corresponding antenna height at the other site is reported.


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Last Update: 08/05/99