47 CFR 25.205 - Minimum antenna elevation angle.

§ 25.205 Minimum antenna elevation angle.

(a) Earth station antennas must not transmit at elevation angles less than five degrees, measured from the horizontal plane to the direction of maximum radiation, in a frequency band shared with terrestrial radio services or in a frequency band with an allocation to space services operating in both the Earth-to-space and space-to-Earth directions. In other bands, earth station antennas must not transmit at elevation angles less than three degrees. In some instances, it may be necessary to specify greater minimum elevation angles because of interference considerations.

(b) ESAAs in aircraft on the ground must not transmit at elevation angles less than three degrees. There is no minimum angle of antenna elevation for ESAAs while airborne.

[ 81 FR 55336, Aug. 18, 2016]

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.

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United States Code

Title 47 published on 09-May-2017 04:29

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 47 CFR Part 25 after this date.

  • 2017-04-20; vol. 82 # 75 - Thursday, April 20, 2017
    1. 82 FR 18580 - Review of Foreign Ownership Policies for Broadcast, Common Carrier and Aeronautical Radio Licensees
      GPO FDSys XML | Text
      FEDERAL COMMUNICATIONS COMMISSION
      Final rule; announcement of effective date.
      This final rule is effective on April 20, 2017. The amendments to 47 CFR 1.5000 through 1.5004, 25.105, 73.1010 and 74.5, published at 81 FR 86586, December 1, 2016, are effective on April 20, 2017.
      47 CFR Parts 1, 25, 73, and 74

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