Goto Section: 73.311 | 73.313 | Table of Contents
FCC 73.312
Revised as of December 4, 2012
Goto Year:2011 |
2013
§ 73.312 Topographic data.
(a) In the preparation of the profile graphs previously described, and
in determining the location and height above mean sea level of the
antenna site, the elevation or contour intervals shall be taken from
United States Geological Survey Topographic Quadrangle Maps, United
States Army Corps of Engineers Maps or Tennessee Valley Authority maps,
whichever is the latest, for all areas for which such maps are
available. If such maps are not published for the area in question, the
next best topographic information should be used. Topographic data may
sometimes be obtained from state and municipal agencies. The data from
the Sectional Aeronautical Charts (including bench marks) or railroad
depot elevations and highway elevations from road maps may be used
where no better information is available. In cases where limited
topographic data can be obtained, use may be made of an altimeter in a
car driven along roads extending generally radially from the
transmitter site.
(b) The Commission will not ordinarily require the submission of
topographical maps for areas beyond 24 km (15 miles) from the antenna
site, but the maps must include the principal city or cities to be
served. If it appears necessary, additional data may be requested.
(c) The U.S. Geological Survey Topography Quadrangle Sheets may be
obtained from the U.S. Geological Survey Department of the Interior,
Washington, DC 20240. The Sectional Aeronautical Charts are available
from the U.S. Coast and Geodetic Survey, Department of Commerce,
Washington, DC 20235. These maps may also be secured from branch
offices and from authorized agents or dealers in most principal cities.
(d) In lieu of maps, the average terrain elevation may be computer
generated except in cases of dispute, using elevations from a 30
second, point or better topographic data file. The file must be
identified and the data processed for intermediate points along each
radial using linear interpolation techniques. The height above mean sea
level of the antenna site must be obtained manually using appropriate
topographic maps.
[ 28 FR 13623 , Dec. 14, 1963, as amended at 31 FR 10126 , July 27, 1966;
49 FR 48937 , Dec. 17, 1984; 58 FR 44950 , Aug. 25, 1993; 63 FR 33877 ,
June 22, 1998]
return arrow Back to Top
Goto Section: 73.311 | 73.313
Goto Year: 2011 |
2013
CiteFind - See documents on FCC website that
cite this rule
Want to support this service?
Thanks!
Report errors in
this rule. Since these rules are converted to HTML by machine, it's possible errors have been made. Please
help us improve these rules by clicking the Report FCC Rule Errors link to report an error.
hallikainen.com
Helping make public information public