| 
Number  | 
Date
 | 
Source
 | 
Title
 | 
|   | 
Number  | 
Posted  | 
Size 
 | 
  | 
|   | 
| 
[ 528 ] 
	         | 
2025-10-24 | 
Chair, WP 4C
   		  | 
Report of the thirty-fourth meeting of Working Party 4C (Geneva, 15-24 October 2025)
		 
		  | 
 
	     
       	     | 
[ 528 ] Annex 25 - English -  Word | 
2025-11-03 [16:52] 
 | 
1'231'073  bytes  | 
		  | 
 
	     
       	     | 
[ 528 ] Annex 19 - English -  Word | 
2025-11-03 [16:42] 
 | 
41'348  bytes  | 
Work plan for the revision of Recommendation ITU-R M.1184-3 - Technical characteristics of mobile satellite systems in the frequency bands below 3 GHz for use in developing criteria for sharing between the mobile satellite service (MSS) and other services
		  | 
 
	     
       	     | 
[ 528 ] Annex 22 - English -  Word | 
2025-11-03 [16:29] 
 | 
66'915  bytes  | 
Working document towards a preliminary draft revision to Recommendation ITU-R M.2031-1 - Characteristics and protection criteria of receiving earth stations and characteristics of transmitting space stations in the radionavigation-satellite service (space-to-Earth) operating in the band 5 010-5 030 MHz
		  | 
 
	     
       	     | 
[ 528 ] Annex 20 - English -  Word | 
2025-11-03 [16:22] 
 | 
392'243  bytes  | 
Working document towards a preliminary draft new Report ITU-R M.[RES.609] - Potential mitigation methods to ensure the aggregate equivalent power flux-density (epfd) limit on radionavigation-satellite service (RNSS) systems and networks operating in the 1 164-1 215 MHz band, from resolves 1 of Resolution 609 (Rev.WRC-07), is not exceeded
		  | 
 
	     
       	     | 
[ 528 ] Annex 3 - English -  Word | 
2025-11-03 [16:21] 
 | 
6'063'617  bytes  | 
Working document regarding WRC-27 agenda item 1.11 - Space-to-space links in the frequency bands 1 518-1 544 MHz, 1 545-1 559 MHz, 1 610-1 645.5 MHz, 1 646.5-1 660 MHz, 1 670-1 675 MHz and 2 483.5-2 500 MHz allocated to the mobile-satellite service (MSS)
		  | 
 
	     
       	     | 
[ 528 ] Annex 21 - English -  Word | 
2025-11-03 [15:53] 
 | 
75'275  bytes  | 
Preliminary draft revision to Recommendation ITU-R M.1787-[6] - Description of systems and networks in the radionavigation-satellite service (space-to-Earth and space-to-space) and technical characteristics of transmitting space stations operating in the bands 1 164-1 215 MHz, 1 215-1 300 MHz and 1 559-1 610 MHz
		  | 
 
	     
       	     | 
[ 528 ] Annex 17 - English -  Word | 
2025-11-03 [15:41] 
 | 
43'783  bytes  | 
Supporting material on the MSS Protection Criteria to be used in sharing and compatibility studies within the context of WRC-27 agenda items 1.12, 1.13, and 1.14
		  | 
 
	     
       	     | 
[ 528 ] Annex 9 - English -  Word | 
2025-11-03 [15:31] 
 | 
1'474'449  bytes  | 
Working document on the possible description and functionality of MSS systems for direct connectivity between space stations and IMT user equipment
		  | 
 
	     
       	     | 
[ 528 ] Annex 7 - English -  Word | 
2025-11-03 [15:30] 
 | 
48'856  bytes  | 
Working document towards draft CPM text for WRC-27 agenda item 1.12
		  | 
 
	     
       	     | 
[ 528 ] Annex 6 - English -  Word | 
2025-11-03 [15:28] 
 | 
47'108  bytes  | 
Draft work plan for WRC-27 agenda item 1.12
		  | 
 
	     
       	     | 
[ 528 ] Annex 18 - English -  Word | 
2025-11-03 [15:27] 
 | 
198'637  bytes  | 
Preliminary draft revision of Recommendation ITU-R M.1184-3 - Technical characteristics of mobile satellite systems in the frequency bands below 3 GHz for use in developing criteria for sharing between the mobile-satellite service (MSS) and other services
		  | 
 
	     
       	     | 
[ 528 ] Annex 1 - English -  Word | 
2025-11-03 [15:26] 
 | 
48'932  bytes  | 
Working document towards draft CPM text for WRC-27 agenda item 1.11
		  | 
 
	     
       	     | 
[ 528 ] Annex 16 - English -  Word | 
2025-11-03 [15:15] 
 | 
91'651  bytes  | 
Working document towards a preliminary draft revision of Recommendation ITU-R M.1480 - Essential technical requirements of mobile earth stations of geostationary mobile-satellite systems that are implementing the global mobile personal communications by satellite (GMPCS) - memorandum of understanding arrangements in parts of the frequency band 1-3 GHz
		  | 
 
	     
       	     | 
[ 528 ] Annex 14 - English -  Word | 
2025-11-03 [15:14] 
 | 
45'606  bytes  | 
Working document relating to CPM text for WRC-27 agenda item 1.14 - New frequency allocations to the mobile-satellite service in the frequency bands 2 010-2 025 MHz (Earth-to-space) and 2 160-2 170 MHz (space-to-Earth) in Regions 1 and 3 and 2 120-2 160 MHz (space-to-Earth) in all Regions
		  | 
 
	     
       	     | 
[ 528 ] Annex 15 - English -  Word | 
2025-11-03 [14:54] 
 | 
86'228  bytes  | 
Working document relating to common frequency bands - Text developed by SWG 4C1a
		  | 
 
	     
       	     | 
[ 528 ] Annex 13 - English -  Word | 
2025-11-03 [14:25] 
 | 
37'081  bytes  | 
Detailed workplan for WRC-27 agenda item 1.14
		  | 
 
	     
       	     | 
[ 528 ] Annex 12 Part 1 - English -  Excel 2007 | 
2025-11-03 [14:15] 
 | 
36'398  bytes  | 
		  | 
 
	     
       	     | 
[ 528 ] Annex 12 - English -  Word | 
2025-11-03 [14:15] 
 | 
16'043'705  bytes  | 
Working document on sharing and compatibility studies of possible new allocations to the MSS 
on WRC-27 agenda item 1.14
		  | 
 
	     
       	     | 
[ 528 ] Annex 10 - English -  Word | 
2025-11-03 [13:36] 
 | 
41'425  bytes  | 
Work plan for WRC-27 agenda item 1.13
		  | 
 
	     
       	     | 
[ 528 ] Annex 4 - English -  Word | 
2025-11-03 [11:02] 
 | 
37'806  bytes  | 
Work plan for WRC-27 agenda item 1.11
		  | 
 
	     
       	     | 
[ 528 ] Annex 2 - English -  Word | 
2025-11-03 [11:01] 
 | 
79'277  bytes  | 
Enabler table for System characteristics and sharing studies for WRC-27 agenda item 1.11
		  | 
 
	     
       	     | 
[ 528 ] Annex 2 - Part 1 - English -  Excel 2007 | 
2025-11-03 [10:44] 
 | 
42'739  bytes  | 
		  | 
 
	     
       	     | 
[ 528 ] Annex 11 - English -  Word | 
2025-11-03 [09:56] 
 | 
34'661  bytes  | 
Working document towards draft CPM text for WRC-27 agenda item 1.13
		  | 
 
	     
       	     | 
[ 528 ] Annex 8 Part 9 - English -  Word | 
2025-10-30 [13:47] 
 | 
286'364  bytes  | 
		  | 
 
	     
       	     | 
[ 528 ] Annex 8 Part 8 - English -  Word | 
2025-10-30 [13:46] 
 | 
47'069  bytes  | 
		  | 
 
	     
       	     | 
[ 528 ] Annex 8 Part 7 - English -  Word | 
2025-10-30 [13:45] 
 | 
1'518'858  bytes  | 
		  | 
 
	     
       	     | 
[ 528 ] Annex 8 Part 6 - English -  Word | 
2025-10-30 [13:44] 
 | 
13'095'394  bytes  | 
		  | 
 
	     
       	     | 
[ 528 ] Annex 8 Part 5 - English -  Word | 
2025-10-30 [13:43] 
 | 
4'756'393  bytes  | 
		  | 
 
	     
       	     | 
[ 528 ] Annex 8 Part 4 - English -  Word | 
2025-10-30 [13:41] 
 | 
24'367'634  bytes  | 
		  | 
 
	     
       	     | 
[ 528 ] Annex 8 Part 3 - English -  Word | 
2025-10-30 [13:40] 
 | 
6'039'576  bytes  | 
		  | 
 
	     
       	     | 
[ 528 ] Annex 8 Part 2 - English -  Word | 
2025-10-30 [13:37] 
 | 
7'944'998  bytes  | 
		  | 
 
	     
       	     | 
[ 528 ] Annex 8 Part 1 - English -  Word | 
2025-10-30 [11:58] 
 | 
8'143'242  bytes  | 
		  | 
 
	     
       	     | 
[ 528 ] Annex 8 - English -  Word | 
2025-10-30 [11:57] 
 | 
3'020'074  bytes  | 
Working document on sharing and compatibility studies under WRC-27 agenda item 1.13
		  | 
 
	     
       	     | 
[ 528 ] Annex 24 - English -  Word | 
2025-10-28 [18:08] 
 | 
1'150'992  bytes  | 
Handbook on Satellite Communications and Technologies - Chapter 6
		  | 
 
	     
       	     | 
[ 528 ] Annex 23 - English -  Word | 
2025-10-28 [18:04] 
 | 
45'317  bytes  | 
Handbook on Satellite Communications and Technologies - Chapter 5
		  | 
|   | 
| 
[ 529 ] 
	         | 
2025-10-21 | 
International Maritime Organization
   		  | 
Report of the twenty-first meeting of the joint IMO/ITU Experts Group on Maritime Radiocommunication Matters
		 
		  | 
 
	     
       	     | 
[ 529 ]  - English -  Word | 
2025-10-29 [16:46] 
 | 
112'195  bytes  | 
		  | 
|   | 
| 
[ 527 ] 
	         | 
2025-10-24 | 
Director, BR
   		  | 
Final list of participants - Working Party 4C (Geneva, 15-24 October 2025)
		 
		  | 
 
	     
       	     | 
[ 527 ]  - English -  PDF (acrobat)  | 
2025-10-27 [14:25] 
 | 
201'744  bytes  | 
		  | 
|   | 
| 
[ TD 107 ] 
	         | 
2025-10-23 | 
WP 4C
   		  | 
Note to Vocabulary Rapporteur for Study Group 4: Feedback on the term "multiple-input and multiple-output (MIMO)" and its definition developed by ITU-R Working Party 5C and submitted to the CCT for validation - [Draft] reply liaison statement to Coordination Committee for Terminology (copy to ITU-T Study Groups 5, 13 and 15 and Working Parties 4B, 5A, 5D, and 6A for information)
		 
		  | 
 
	     
       	     | 
[ TD 107 ]  - English -  Word | 
2025-10-24 [15:07] 
 | 
35'928  bytes  | 
		  | 
|   | 
| 
[ ADM 47 ] 
	         | 
2025-10-24 | 
Chair, WP 4C
   		  | 
Agenda for the closing Plenary meeting of Working Party 4C - Friday, 24 October 2025, from 1045 to 1700 hours (Geneva time) (Physical meeting with remote participation) (Room Popov, ITU Tower)
		 
		  | 
 
	     
       	     | 
[ ADM 47 ] Revision 1 - English -  Word | 
2025-10-24 [13:54] 
 | 
43'349  bytes  | 
		  | 
|   | 
| 
[ TD 102 ] 
	         | 
2025-10-23 | 
Ad-Hoc Group on Handbook
   		  | 
Draft reply liaison statement to Working Party 4A - Comments for sections 5 and 6 regarding MSS and RDSS/RNSS of the draft working document for the Handbook on Satellite Communications and Technologies
		 
		  | 
 
	     
       	     | 
[ TD 102 ] Revision 2 - English -  Word | 
2025-10-24 [13:51] 
 | 
1'203'060  bytes  | 
		  | 
 
	     
       	     | 
[ TD 102 ] Part 2 - English -  Word | 
2025-10-24 [10:59] 
 | 
43'069  bytes  | 
		  | 
 
	     
       	     | 
[ TD 102 ] Part 1 - English -  Word | 
2025-10-24 [10:59] 
 | 
1'144'980  bytes  | 
		  | 
|   | 
| 
[ TD 138 ] 
	         | 
2025-10-24 | 
WG 4C1
   		  | 
Working document towards a preliminary draft revision of Recommendation ITU-R M.1480 - Essential technical requirements of mobile earth stations of geostationary mobile-satellite systems that are implementing the global mobile personal communications by satellite (GMPCS) - memorandum of understanding arrangements in parts of the frequency band 1-3 GHz
		 
		  | 
 
	     
       	     | 
[ TD 138 ]  - English -  Word | 
2025-10-24 [13:55] 
 | 
93'312  bytes  | 
		  | 
|   | 
| 
[ TD 137 ] 
	         | 
2025-10-24 | 
WG 4C1
   		  | 
Work plan for WRC-23 agenda item 1.13
		 
		  | 
 
	     
       	     | 
[ TD 137 ]  - English -  Word | 
2025-10-24 [13:40] 
 | 
41'579  bytes  | 
		  | 
|   | 
| 
[ TD 140 ] 
	         | 
2025-10-24 | 
WG 4C1
   		  | 
Working document towards draft CPM text for WRC-27 agenda item 1.13
		 
		  | 
 
	     
       	     | 
[ TD 140 ]  - English -  Word | 
2025-10-24 [13:47] 
 | 
37'640  bytes  | 
		  | 
|   | 
| 
[ TD 139 ] 
	         | 
2025-10-24 | 
WG 4C1
   		  | 
Reply liaison statement to Working Party 7B - Studies on WRC-27 agenda item 1.13
		 
		  | 
 
	     
       	     | 
[ TD 139 ]  - English -  Word | 
2025-10-24 [13:56] 
 | 
44'977  bytes  | 
		  | 
|   | 
| 
[ TD 136 ] 
	         | 
2025-10-24 | 
WG 4C1
   		  | 
Reply liaison statement to Working Party 5D - Studies on WRC-27 agenda item 1.13
		 
		  | 
 
	     
       	     | 
[ TD 136 ]  - English -  Word | 
2025-10-24 [13:45] 
 | 
35'141  bytes  | 
		  | 
|   | 
| 
[ TD 135 ] 
	         | 
2025-10-24 | 
WG 4C1
   		  | 
Working document on the possible description and functionality of MSS systems for direct connectivity between space stations and IMT user equipment
		 
		  | 
 
	     
       	     | 
[ TD 135 ]  - English -  Word | 
2025-10-24 [13:40] 
 | 
1'471'721  bytes  | 
		  | 
|   | 
| 
[ TD 134 ] 
	         | 
2025-10-24 | 
WG 4C1
   		  | 
Working document on sharing and compatibility studies under WRC-27 agenda item 1.13
		 
		  | 
 
	     
       	     | 
[ TD 134 ] Part 1 - English -  Word | 
2025-10-24 [15:49] 
 | 
8'145'169  bytes  | 
		  | 
 
	     
       	     | 
[ TD 134 ] Part 9 - English -  Word | 
2025-10-24 [14:05] 
 | 
286'364  bytes  | 
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