47 CFR 1.959 - Computation of average terrain elevation.

Status message

There are 15 Updates appearing in the Federal Register for 47 CFR 1. View below or at eCFR (GPOAccess)
prev | next
§ 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 averages.
(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]

Title 47 published on 2013-10-01

The following are only the Rules published in the Federal Register after the published date of Title 47.

For a complete list of all Rules, Proposed Rules, and Notices view the Rulemaking tab.

  • 2014-06-26; vol. 79 # 123 - Thursday, June 26, 2014
    1. 79 FR 36231 - Modernizing the FCC Form 477 Data Program
      GPO FDSys XML | Text
      Final rule; announcement of effective date.
      Sections 1.7001, 1.7002, 43.01 and 43.11, published at 78 FR 49126, were approved by the OMB on June 4, 2014 (OMB Control Number 3060-0816). Accordingly, the amendments to those sections published at 78 FR 49126, Aug. 13, 2013, are effective June 26, 2014.
      47 CFR Parts 1 and 43

This is a list of United States Code sections, Statutes at Large, Public Laws, and Presidential Documents, which provide rulemaking authority for this CFR Part.

This list is taken from the Parallel Table of Authorities and Rules provided by GPO [Government Printing Office].

It is not guaranteed to be accurate or up-to-date, though we do refresh the database weekly. More limitations on accuracy are described at the GPO site.

United States Code
Presidential Documents

Executive Order ... 11609

Executive Order ... 12107

Title 47 published on 2013-10-01

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 47 CFR 1 after this date.

  • 2014-08-06; vol. 79 # 151 - Wednesday, August 6, 2014
    1. 79 FR 45752 - Petitions for Reconsideration of Action in Rulemaking Proceeding
      GPO FDSys XML | Text
      Petition for reconsideration.
      Oppositions to the Petitions must be filed by August 21, 2014. Replies to an opposition must be filed by September 2, 2014.
      47 CFR Parts 1, 2, and 27