Radio Regulations

Source: the Radio Regulations published by the International Telecommunication Union (ITU).

All IBR Recommendations

As incorporated in RR-2012

This is not the text in force. It is the version of this Recommendation that RR-2012 gave treaty-binding force, kept so that the incorporated set can be read as it stood at each conference.

S

Recommendation ITU-R S.1341-0

Mandatory (1997)

Sharing between Feeder Links for the Mobile-Satellite Service and the Aeronautical Radionavigation Service in the Space-to-Earth Direction in the Band 15.4-15.7 GHz and the Protection of the Radio Astronomy Service in the Band 15.35-15.4 GHz

View official text at ITU

Version history

Version evolution

The number in each cell (e.g. −9) is the Recommendation's revision number — the “-9” in ITU-R M.585-9, not a negative value. So −8 → −9 means the binding reference moved from the 8th to the 9th revision.

RR-2008 -0
RR-2012 -0
RR-2016 —
RR-2020 —
RR-2024 —

Incorporated into the RR by

RR provisions, footnotes and Resolutions that incorporate this Recommendation

Footnote

5.511A

Bands and services are derived from the footnotes of the Radio Regulations as they stand, so they are shown only on the edition in force.

Scope

Resolution 116 (WRC-95) of the World Radiocommunication Conference (Geneva, 1995) calls for studies by the ITU-R of the sharing situation between feeder links (space-to-Earth) for the mobile-satellite service (MSS) and the aeronautical radionavigation service in the band 15.4-15.7 GHz;

Recommends

  1. that feeder links for the MSS should be limited to the band 15.43-15.63 GHz (Note 1);
  2. that provisionally the pfd at the Earth’s surface produced by emissions from the feeder links of a space system of non-GSO satellites for all conditions and for all methods of modulation should not exceed the values given in 2.1 under the condition given in § 2.2 (Note 2);
  3. 2.1 in the frequency band 15.43-15.63 GHz, where ϕ is the angle of arrival (degrees) above the local horizontal plane:
  4. ±127dB(Wm2)in1MHzfor±127+0.56(j±20)2dB(Wm2)in1MHzfor±113dB(Wm2)in1MHzfor±136.9+25 log(j±20)dB(Wm2)in1MHzfor±111dB(Wm2)in1MHzfor020252931j<j<j<j<j≤2025293190
  5. 2.2 that these limits relate to the pfd which would be obtained under assumed free-space propagation conditions;
  6. that with the pfd limits given in recommends 2 coordination of satellite emissions with receiving stations in the aeronautical radionavigation service is not required;

+11 more in the full text

Source: ITU Radio Regulations, editions of 2008, 2012, 2016, 2020 and 2024. The English, French and Spanish texts are each taken from the official edition in that language, not translated from one another. Sources and citation.