Radio Regulations
Source: the Radio Regulations published by the International Telecommunication Union (ITU).
Suppressed at WRC-2003
Last known text (before suppression)
5.551AA In the bands 37.5-40 GHz and 42-42.5 GHz, non-geostationary-satellite systems in the fixed-satellite service should employ power control or other methods of downlink fade compensation of the order of 10 dB, such that the satellite transmissions are at power levels required to meet the desired link performance while reducing the level of interference to the fixed service. The use of downlink fade compensation methods are under study by the ITU-R (see Resolution 84 (WRC-2000)
Frequency bands (0)
No band in the catalogue carries this footnote — usually because the conference struck it out.
Version history
The wording adopted at each conference, newest first.
Current text
5.551AA (SUP - WRC-03)
Current text
5.551AA In the bands 37.5-40 GHz and 42-42.5 GHz, non-geostationary-satellite systems in the fixed-satellite service should employ power control or other methods of downlink fade compensation of the order of 10 dB, such that the satellite transmissions are at power levels required to meet the desired link performance while reducing the level of interference to the fixed service. The use of downlink fade compensation methods are under study by the ITU-R (see Resolution 84 (WRC-2000)
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.