| Contributions
 [ AI/Question: AI1.9 ]  | 
| 
 | Number 
 | Title | Source | AI/Question 
 | Date | 
|  | [ 582 ] 
 | Proposed work plan for WRC-27 agenda item 1.9 | India (Republic of) | AI1.9 | 2024-05-02 | 
|  | [ 579 ] 
 | Liaison statement to Working Parties 3L, 5C, 6A, 7A  and ICAO - WRC-27 agenda item 1.9 - Review of Appendix 26 of the Radio Regulations to support modernization of high-frequency spectrum use in the aeronautical mobile (OR) service | India (Republic of) | AI1.9 | 2024-05-02 | 
|  | [ 542 ] 
 | Activities in WP 5B related to WRC-27 agenda item 1.9 preparations | United States of America | AI1.9 | 2024-04-26 | 
|  | [ 541 ] 
 | Draft liaison statement to ITU-R Working Parties 3L, 5C, 6A , 7A - Relevant technical information to support studies under WRC-27 agenda item 1.9 | United States of America | AI1.9 | 2024-04-26 | 
|  | [ 364 ] 
 | Draft CPM text for WRC-23 agenda item 1.9 | France | AI1.9 | 2022-07-01 | 
|  | [ 305 ] 
 | Working document towards A draft CPM text for WRC-23 agenda item 1.9 | France | AI1.9 | 2022-03-22 | 
|  | [ 193 ] 
 | Elements and technical characteristics related to WRC-23 agenda item 1.9 - Elements and technical characteristics for wideband HF systems | France | AI1.9 | 2021-05-03 | 
|  | [ 69 ] 
 | Liaison statement to ITU-R Working Party 5B (copy for information to Working Parties 3L, 3M, 5A, 5C, and 6A) - Preparation for WRC-23 Agenda Item 1.9 - Review of Appendix 27 of the Radio Regulations to accommodate digital aeronautical HF technologie | International Civil Aviation Organization | AI1.9 | 2020-10-09 | 
|  | [ 63 ] 
 | Preliminary draft revision of Recommendation ITU-R M.2092-0 - Technical characteristics for a VHF data exchange system in the VHF maritime mobile band | China (People's Republic of) | AI1.9.2 | 2020-07-13 | 
|  | [ 21 ] 
 | Proposed work plan for WRC-23 agenda item 1.9 | United States of America | AI1.9 | 2020-06-24 | 
| Results:10 total items. 
 | 
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