Radio Regulations

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

All IBR Recommendations
M

Recommendation ITU-R M.1583-1

Mandatory (2002-2007)

Interference calculations between non-geostationary mobile-satellite service or radionavigation-satellite service systems and radio astronomy telescope sites

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 -1
RR-2016 -1
RR-2020 -1
RR-2024 -1

Incorporated into the RR by

RR provisions, footnotes and Resolutions that incorporate this Recommendation

Footnote

5.372 5.443B

Resolution

Resolution 741 (Rev.WRC-15)

Appendix

Appendix 4

Where it applies

Frequency bands and radio services this Recommendation reaches, derived from the RR footnotes that incorporate it.

Radio services

AERONAUTICAL MOBILE-SATELLITE AERONAUTICAL RADIONAVIGATION MARITIME MOBILE-SATELLITE MOBILE-SATELLITE RADIO ASTRONOMY RADIODETERMINATION-SATELLITE RADIONAVIGATION-SATELLITE

Frequency bands

ITU RR table: 1 610-1 660 MHz ITU RR table: 4 800-5 250 MHz

Scope

This Recommendation describes a methodology to be used to calculate the amount of data loss due to interference produced by a non-GSO mobile-satellite or radionavigation-satellite service system at a radio astronomy site. This methodology is based on the calculation of the epfd produced by the considered active system at the radio astronomy site.

Recommends

  1. that the determination of unwanted emission levels produced by a non-GSO radionavigation-satellite service (RNSS) or a mobile-satellite service (MSS) systems on radio astronomy sites should be based on the method described in Annex 1;
  2. that when performing this determination, the antenna pattern described in Recommendation ITU-R RA.1631 should be used to model radio astronomy antennas;
  3. that the percentage of time during which an equivalent power flux-density (epfd) threshold level is exceeded should also be determined in accordance with the method described in Annex 2.

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.