| 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 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 |  | 
|   | [ TD 134 ] Part 8 - English -  Word | 2025-10-24 [14:04] | 47'069  bytes |  | 
|   | [ TD 134 ] Part 7 - English -  Word | 2025-10-24 [14:03] | 1'520'070  bytes |  | 
|   | [ TD 134 ]  - English -  Word | 2025-10-24 [14:01] | 3'020'876  bytes |  | 
|   | [ TD 134 ] Part 6 - English -  Word | 2025-10-24 [14:01] | 13'095'394  bytes |  | 
|   | [ TD 134 ] Part 5 - English -  Word | 2025-10-24 [14:00] | 4'756'393  bytes |  | 
|   | [ TD 134 ] Part 4 - English -  Word | 2025-10-24 [13:57] | 24'367'634  bytes |  | 
|   | [ TD 134 ] Part 3 - English -  Word | 2025-10-24 [13:56] | 6'039'576  bytes |  | 
|   | [ TD 134 ] Part 2 - English -  Word | 2025-10-24 [13:47] | 7'944'998  bytes |  | 
|  | 
| [ TD 133 ] | 2025-10-24 | WG 4C1 | Draft work plan for WRC-27 agenda item 1.12 | 
|   | [ TD 133 ]  - English -  Word | 2025-10-24 [13:32] | 47'303  bytes |  | 
|  | 
| [ TD 132 ] | 2025-10-24 | WG 4C1 | Working document towards draft CPM text for WRC-27 agenda item 1.12 | 
|   | [ TD 132 ]  - English -  Word | 2025-10-24 [13:33] | 48'958  bytes |  | 
|  | 
| [ TD 131 ] | 2025-10-24 | WG 4C1 | Liaison statement to Working Party 5B - Characteristics for MSS (Earth-to-space) in the band 1 645.5-1 646.5 MHz | 
|   | [ TD 131 ]  - English -  Word | 2025-10-24 [13:29] | 36'615  bytes |  | 
|  | 
| [ TD 130 ] | 2025-10-24 | WG 4C1 | Working document regarding WRC-27 agenda item 1.12 - Studies on low-data-rate non-GSO mobile-satellite systems in the mobile-satellite service | 
|   | [ TD 130 ] Part 06 - English -  Zip (Document) | 2025-10-24 [13:55] | 183'840  bytes |  | 
|   | [ TD 130 ] Part 05 - English -  Word | 2025-10-24 [13:54] | 59'219  bytes |  | 
|   | [ TD 130 ] Part 04 - English -  Word | 2025-10-24 [13:53] | 6'305'820  bytes |  | 
|   | [ TD 130 ] Part 03 - English -  Word | 2025-10-24 [13:53] | 1'553'414  bytes |  | 
|   | [ TD 130 ] Part 02 - English -  Word | 2025-10-24 [13:52] | 111'083  bytes |  | 
|   | [ TD 130 ] Part 01 - English -  Word | 2025-10-24 [13:51] | 2'602'831  bytes |  | 
|   | [ TD 130 ]  - English -  Word | 2025-10-24 [13:48] | 18'685'346  bytes |  | 
|  | 
| [ TD 129 ] | 2025-10-24 | WG 4C1 | 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 | 
|   | [ TD 129 ]  - English -  Word | 2025-10-24 [13:24] | 47'065  bytes |  | 
|  | 
| [ TD 128 ] | 2025-10-24 | WG 4C1 | Detailed work plan for WRC-27 agenda item 1.14 | 
|   | [ TD 128 ]  - English -  Word | 2025-10-24 [13:25] | 37'431  bytes |  | 
|  | 
| [ TD 127 ] | 2025-10-24 | WG 4C1 | Working document on sharing and compatibility studies of possible new allocations to the MSS on WRC-27 agenda item 1.14 | 
|   | [ TD 127 ] Part 1 - English -  Excel 2007 | 2025-10-24 [13:29] | 36'261  bytes |  | 
|   | [ TD 127 ]  - English -  Word | 2025-10-24 [13:29] | 16'047'138  bytes |  | 
|  | 
| [ TD 126 ] | 2025-10-24 | WG 4C1 | Work plan for the revision of Recommendation ITU-R M.1184-3 | 
|   | [ TD 126 ]  - English -  Word | 2025-10-24 [13:18] | 42'559  bytes |  | 
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