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[ 830 ]
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2025-11-07 |
Chair, WP 4A
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Report on the fifty-seventh meeting of Working Party 4A (Geneva, 27 October - 6 November 2025)
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N/A
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[ 830 ] Annex 54 - English - Word |
2025-11-26 [15:47]
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35'937 octets |
Draft Note to the Director regarding orbital tolerances for satellite systems not subject to Resolution 8 (WRC-23)
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[ 830 ] Annex 52 - English - Word |
2025-11-26 [15:37]
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68'960 octets |
Working document towards a candidate Topic under WRC-27 agenda item 7 - Additional measures for the enhancement of equitable access to additional uses in Appendices 30 and 30A in Regions 1 and 3
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[ 830 ] Annex 53 - English - Word |
2025-11-26 [13:13]
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48'500 octets |
WRC-27 agenda item 7 considerations
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[ 830 ] Annex 49 - English - Word |
2025-11-26 [11:48]
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97'585 octets |
Working document towards draft CPM text for Topic proposed under WRC-27 agenda item 7 - Capability of a space station to satisfy the requirements for bringing into use of frequency assignments specified in the provisions of Radio Regulations Nos. 11.44B, 11.44C, 11.44D and 11.44E
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[ 830 ] Annex 48 - Part 1 - English - Excel 2007 |
2025-11-26 [11:23]
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74'914 octets |
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[ 830 ] Annex 48 - English - Word |
2025-11-26 [11:21]
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2'645'907 octets |
Working document towards [candidate] Topic under WRC-27 agenda item 7 - Possible measures to enhance long-term protection and sustainable development of BSS in the plan band against severe misaligned FSS in other regions
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[ 830 ] Annex 46 - English - Word |
2025-11-26 [11:02]
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62'478 octets |
Working document towards candidate Topic under WRC-27 agenda item 7 - Proposed revision to Resolution 170 (Rev.WRC-23)
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[ 830 ] Annex 50 - English - Word |
2025-11-26 [10:59]
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613'911 octets |
Working document towards draft CPM text for Topic proposed under WRC-27 agenda item 7 - Unrealistic gain contours of submissions under RR Appendices 30, 30A and 30B
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[ 830 ] Annex 51 - English - Word |
2025-11-26 [10:46]
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70'251 octets |
Working document towards candidate Topic under WRC-27 agenda item 7 - Enhancing the responsibility of the notifying administration of a satellite network or system
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[ 830 ] Annex 45 - English - Word |
2025-11-26 [10:35]
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498'157 octets |
Working document towards candidate Topic under WRC-27 agenda item 7 proposed revision to Resolution 553 (Rev.WRC-23)
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[ 830 ] Annex 20 - English - Word |
2025-11-26 [10:29]
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10'022'179 octets |
Working document towards a preliminary draft revision of Recommendation ITU-R S.1503 - Functional description to be used in developing software tools for determining conformity of non-geostationary-satellite orbit fixed-satellite service systems or networks with limits contained in RR Article 22 of the Radio Regulations
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[ 830 ] Annex 47 - English - Word |
2025-11-26 [10:21]
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266'473 octets |
Working document towards candidate Topic on WRC-27 agenda item 7 - Inclusion of the territory of a country in the service area of a notified geostationary (GSO) satellite networks in the planned and unplanned BSS frequency bands and in the planned FSS frequency bands subject to Appendices 30A and 30B, without imposing new coordination restrictions to satellite networks already submitted to the Bureau
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[ 830 ] Annex 44 - English - Word |
2025-11-26 [09:14]
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68'898 octets |
Elements of working document towards candidate Topic under WRC-27 agenda item 7 - Exclusion of the territory of a country from the service area of a geostationary satellite network (GSO) in the fixed-satellite service (FSS) or mobile-satellite service (MSS) in a frequency band not subject to a Plan
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[ 830 ] Annex 38 - Part 1 - English - Excel 2007 |
2025-11-26 [08:34]
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547'912 octets |
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[ 830 ] Annex 15 - Part 7 - English - Word |
2025-11-25 [16:20]
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63'733 octets |
Annex 7 - Concept of reserve capacity
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[ 830 ] Annex 15 - Part 6 - English - Word |
2025-11-25 [16:19]
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10'472'500 octets |
Annex 6 - Measurement campaign of interference to GSO earth stations from non-GSO systems
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[ 830 ] Annex 15 - Part 5 - English - Word |
2025-11-25 [16:19]
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385'356 octets |
Annex 5 - [Technical studies for the protection of GSO / Technical elements to derive epfd limits]
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[ 830 ] Annex 15 - Part 4 - English - Word |
2025-11-25 [16:18]
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92'695 octets |
Annex 4 - Questions to be answered to complete technical studies on epfd limits in RR Article 22
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[ 830 ] Annex 15 - Part 3 - English - Word |
2025-11-25 [16:18]
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3'948'895 octets |
Annex 3 - Overview of the epfd limits in RR Article 22
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[ 830 ] Annex 15 - Part 2 - English - Word |
2025-11-25 [16:17]
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18'704'390 octets |
Annex 2 - Overview of studies
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[ 830 ] Annex 15 - Part 1 - English - Word |
2025-11-25 [16:16]
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1'990'999 octets |
Annex 1 - Comparison between satellite parameters retained to conduct technical studies on the epfd limits in Article 22 in 1997-2000 and current state of the art
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[ 830 ] Annex 5 - Part 6 - English - Excel 2007 |
2025-11-25 [16:15]
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39'043 octets |
Aggregate RLS studies
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[ 830 ] Annex 5 - Part 5 - English - Word |
2025-11-25 [16:15]
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42'825 octets |
Technical discussions
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[ 830 ] Annex 5 - Part 4 - English - Word |
2025-11-25 [16:14]
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21'587'091 octets |
Annex 4 - Sharing and compatibility study of FSS systems with SRS operating in the 13.75-14 GHz frequency range
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[ 830 ] Annex 5 - Part 3 - English - Word |
2025-11-25 [16:13]
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3'052'248 octets |
Annex 3 - Sharing and compatibility study of aggregated earth station interference from all FSS GSO networks and non-GSO systems with RLS operating in the 13.75-14 GHz frequency range
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[ 830 ] Annex 43 - English - Word |
2025-11-25 [16:10]
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64'984 octets |
[Candidate] Topic under WRC-27 agenda item 7 - Proposed modifications to Appendix 4
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[ 830 ] Annex 41 - English - Word |
2025-11-25 [16:07]
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62'056 octets |
Working document towards [candidate] Topic under WRC-27 agenda item 7 assessing the potential advantage to define coordination arc for some frequency bands above 3 GHz
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[ 830 ] Annex 5 - Part 2 - English - Word |
2025-11-25 [16:02]
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43'836'490 octets |
Annex 2 - Aggregated [GSO FSS] earth station interference for sharing and compatibility study [] with RLS operating in the 13.75-14 GHz frequency range
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[ 830 ] Annex 5 - Part 1 - English - Word |
2025-11-25 [16:01]
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12'835'515 octets |
Annex 1 - Single FSS Earth station interferer with RLS operating in the 13.75-14 GHz frequency range
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[ 830 ] Annex 7 - Part 1 - English - Word |
2025-11-25 [15:56]
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23'375 octets |
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[ 830 ] Annex 7 - English - Word |
2025-11-25 [15:55]
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12'691'862 octets |
Working document relating to WRC-27 agenda item 1.3 - Studies relating to the use of the frequency band 51.4-52.4 GHz to enable its use by gateway earth stations transmitting to non-geostationary-satellite orbit systems in the fixed-satellite service (Earth-to-space)
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[ 830 ] Annex 42 - English - Word |
2025-11-25 [15:50]
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43'193 octets |
Working document towards candidate Topic under WRC-27 agenda item 7 assessing the review the existing coordination arc thresholds
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[ 830 ] Annex 40 - English - Word |
2025-11-25 [15:43]
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66'677 octets |
Working document towards candidate Topic under WRC-27 agenda item 7 - Recording of frequency assignments in space services under RR No. 11.41
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[ 830 ] Annex 38 - English - Word |
2025-11-25 [15:38]
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664'101 octets |
Working document towards candidate Topic under WRC-27 agenda item 7 - The use of the same satellite or different satellites to repeatedly bring into use and bring back into use the same frequency assignments of a satellite network or system for a short period of time
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[ 830 ] Annex 39 - English - Word |
2025-11-25 [15:35]
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86'641 octets |
Working document towards candidate Topic under WRC-27 agenda item 7 regarding measures to restrict the use of the same satellite to BIU frequency assignments of different GSO satellite networks (within 0.5 degrees of longitude of the physical satellite) without moving the satellite ("Hop without Move")
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[ 830 ] Annex 30 - English - Word |
2025-11-25 [15:28]
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4'469'439 octets |
Preliminary draft new Recommendation ITU-R S.[RESOLUTION 770] - Functional description to be used in developing software tools for determining conformity of non-geostationary-satellite orbit fixed-satellite service systems or networks in Q/V band with criteria contained in
No. 22.5L of the Radio Regulations
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[ 830 ] Annex 9 - English - Word |
2025-11-25 [15:27]
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2'704'844 octets |
Working document on WRC-27 agenda item 1.4
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[ 830 ] Annex 27 - English - Word |
2025-11-25 [15:26]
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1'541'844 octets |
Working document towards a preliminary draft new Recommendation ITU-R S.[NON-GSO-MODELLING] - Modelling and simulation of non-GSO FSS systems for use
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[ 830 ] Annex 5 - English - Word |
2025-11-25 [15:05]
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4'084'197 octets |
Working document on WRC-27 agenda item 1.2 - Operational and technical limitations for FSS earth stations in thefrequency band 13.75-14 GHz (Earth-to-space)
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[ 830 ] Annex 37 - Part 1 - English - Excel 2007 |
2025-11-25 [14:38]
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653'449 octets |
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[ 830 ] Annex 37 - English - Word |
2025-11-25 [14:37]
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902'427 octets |
Working document towards candidate Topic under WRC-27 agenda item 7 - Potential regulatory improvements related to the application of RR NO. 4.4 to stations of space services
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[ 830 ] Annex 36 - English - Word |
2025-11-25 [14:18]
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56'462 octets |
Working document towards preliminary draft revision of Recommendation ITU-R S.673-2 - Terms and definitions relating to space radiocommunications
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[ 830 ] Annex 58 - English - Word |
2025-11-25 [14:00]
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968'976 octets |
[Elements of the] working document towards a preliminary draft [new Recommendation ITU-R S.[NGSO DEORBITING]] - [Guidance] on safe and efficient deorbit and/or disposal strategies and methodologies for non-GSO [space stations/systems] involved in radiocommunication services after the end of their life
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[ 830 ] Annex 35 - English - Word |
2025-11-25 [13:57]
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216'912 octets |
Elements for a working document towards a preliminary draft new Report ITU-R S.[IOS SPEC NEEDS] - Spectrum needs and operational description of in-orbit servicing (IOS) to support their safe operation
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[ 830 ] Annex 32 - English - Word |
2025-11-25 [13:23]
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127'423 octets |
Working document towards a preliminary draft revision of Recommendation ITU-R S.1528 - Satellite antenna radiation patterns for non-geostationary orbit satellite antennas operating in the fixed-satellite service below 30 GHz
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[ 830 ] Annex 25 - English - Word |
2025-11-25 [10:57]
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1'215'581 octets |
Working document towards a preliminary draft revision of Recommendation ITU-R S.1526-1 - Methodology to assess the interference environment in relation to Nos. 9.12, 9.12A and 9.13 of the Radio Regulations when non-geostationary-satellite orbit fixed-satellite service systems are involved
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[ 830 ] Annex 57 - English - Word |
2025-11-25 [10:55]
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8'279'175 octets |
Working document towards a preliminary draft ITU-R Handbook on Best practices for the sustainable use of frequencies and associated non-GSO orbits by space radiocommunication services
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[ 830 ] Annex 21 - English - Word |
2025-11-25 [10:38]
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23'835'249 octets |
Supporting material in relation to possible revision of Recommendations ITU-R S.1428 and ITU-R BO.1443, where appropriate and applicable
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[ 830 ] Annex 22 - English - Word |
2025-11-24 [16:57]
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65'094 octets |
Working document towards a preliminary draft revision of Recommendation ITU-R S.1428-1 - Reference FSS earth-station radiation patterns for use in interference assessment involving non-GSO satellites in frequency bands between 10.7 GHz and 30 GHz
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[ 830 ] Annex 29 - English - Word |
2025-11-24 [16:40]
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124'742 octets |
Working document towards a preliminary draft new revision of Recommendation ITU-R S.2157 - Procedures for the evaluation of interference from any non-geostationary-satellite system into a global set of the generic geostationary-satellite reference links in the frequency bands 37.5-39.5 GHz (space-to-Earth), 39.5-42.5 GHz (space-to-Earth), 47.2-50.2 GHz (Earth-to-space) and 50.4-51.4 GHz (Earth-to-space)
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