47 CFR 25.261 - Sharing among NGSO FSS space stations.

§ 25.261 Sharing among NGSO FSS space stations.

(a)Scope. This section applies to NGSO FSS operation with earth stations with directional antennas anywhere in the world under a Commission license, or in the United States under a grant of U.S. market access.

(b)Coordination. NGSO FSS operators must coordinate in good faith the use of commonly authorized frequencies.

(c)Default procedure. Absent coordination between two or more satellite systems, whenever the increase in system noise temperature of an earth station receiver, or a space station receiver for a satellite with on-board processing, of either system, ΔT/T, exceeds 6 percent due to interference from emissions originating in the other system in a commonly authorized frequency band, such frequency band will be divided among the affected satellite networks in accordance with the following procedure:

(1) Each of n (number of) satellite networks involved must select 1/n of the assigned spectrum available in each of these frequency bands. The selection order for each satellite network will be determined by the date that the first space station in each satellite system is launched and capable of operating in the frequency band under consideration;

(2) The affected station(s) of the respective satellite systems may operate in only the selected (1/n) spectrum associated with its satellite system while the ΔT/T of 6 percent threshold is exceeded;

(3) All affected station(s) may resume operations throughout the assigned frequency bands once the threshold is no longer exceeded.

[ 82 FR 59986, Dec. 18, 2017]

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United States Code

Title 47 published on 06-Feb-2018 04:06

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

  • 2018-02-05; vol. 83 # 24 - Monday, February 5, 2018
    1. 83 FR 5057 - Petitions for Reconsideration of Action in Rulemaking Proceeding
      GPO FDSys XML | Text
      Petitions for reconsideration.
      Oppositions to the Petitions must be filed on or before February 20, 2018. Replies to an opposition must be filed on or before March 2, 2018.
      47 CFR Parts 2 and 25


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