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]

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United States Code

Title 47 published on 19-May-2018 04:35

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

  • 2018-05-24; vol. 83 # 101 - Thursday, May 24, 2018
    1. 83 FR 24064 - Streamlining Licensing Procedures for Small Satellites
      GPO FDSys XML | Text
      FEDERAL COMMUNICATIONS COMMISSION
      Proposed rule.
      Comments are due on or before July 9, 2018. Reply comments are due on or before August 7, 2018.
      47 CFR Parts 2 and 25

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