Goto Section: 1.958 | 1.981 | Table of Contents
Revised as of September 1, 2021
Goto Year:2020 |
§ 1.959 Computation of average terrain elevation.
Except as otherwise specified in § 90.309(a)(4) of this chapter, average
terrain elevation must be calculated by computer using elevations from
a 30 second point or better topographic data file. The file must be
identified. If a 30 second point data file is used, the elevation data
must be processed for intermediate points using interpolation
techniques; otherwise, the nearest point may be used. In cases of
dispute, average terrain elevation determinations can also be done
manually, if the results differ significantly from the computer derived
(a) Radial average terrain elevation is calculated as the average of
the elevation along a straight line path from 3 to 16 kilometers (2 and
10 miles) extending radially from the antenna site. If a portion of the
radial path extends over foreign territory or water, such portion must
not be included in the computation of average elevation unless the
radial path again passes over United States land between 16 and 134
kilometers (10 and 83 miles) away from the station. At least 50 evenly
spaced data points for each radial should be used in the computation.
(b) Average terrain elevation is the average of the eight radial
average terrain elevations (for the eight cardinal radials).
(c) For locations in Dade and Broward Counties, Florida, the method
prescribed above may be used or average terrain elevation may be
assumed to be 3 meters (10 feet).
[ 70 FR 19306 , Apr. 13, 2005]
Reports To Be Filed With the Commission
Goto Section: 1.958 | 1.981
Goto Year: 2020 |
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