User manual

AP User Manual January 2004
Software Release 4.1
5.2.2 Radio Horizon
Because the surface of the earth is curved, higher module elevations are required for greater link
distances. This effect can be critical to link connectivity in link spans that are greater than 8 miles
(12 km). The Canopy System Calculator page
AntennaElevationCalcPage.xls automatically
calculates the minimum antenna elevation for these cases, presuming no landscape elevation
difference from one end of the link to the other. Figure 13 displays an image of this file.
Canopy
™ System
Calculator
Automatically calculate
Minimum Antenna Elevation
from known
Distance from Transmitter to Receiver
Distance from transmitter to receiver (kilometers)
Distance from transmitter to receiver (miles)
Minimum antenna elevation (meters)
Minimum antenna elevation (feet)
Determinants
Results
Enter Values
Read Values
Figure 13: Canopy System Calculator page for antenna elevation
Issue 5 Page 42 of 102