| Contributions
 [ Source: WP 4A ]  | 
| 
 | Numéro 
 | Titre | Source | Date | 
|  | [ 616 ] 
 | Liaison statement to Study Group 1 (copy to Study Groups 5, 6, 7 and Working Party 1A) - A database for the protection of radio services | WP 4A | 2011-09-29 | 
|  | [ 615 ] 
 | Liaison statement to Working Party 5D (copy to Working Parties 5A, 5B, 6A and 7B for information) - Draft revisions of Recommendations ITU-R M.1580-3 and ITU-R M.1581-3 | WP 4A | 2011-09-29 | 
|  | [ 371 ] 
 | Liaison statement to Working Parties 5C and 6B for action and to Working Parties 3M, 4B, 5A, 6A and 7D for information on WRC-12 Agenda item 1.13 | WP 4A | 2010-04-14 | 
|  | [ 354 ] 
 | Liaison statement to Study Group 6 and Working Party 6A with copy to Working Party 4B for information - Response to comments on the proposed treatment of Recommendations of former Working Party 6S | WP 4A | 2010-04-13 | 
|  | [ 218 ] 
 | Liaison statement to Working Party 5C (copy to Working Party 6A for information) - Harmonization on electronic news gathering in the satellite frequency bands | WP 4A | 2009-10-14 | 
|  | [ 197 ] 
 | Liaison statement to Working Parties 5C and 6B for action and to Working Parties 3M, 4B, 5A, 6A and 7D for information on WRC-11 Agenda item 1.13 | WP 4A | 2009-05-11 | 
|  | [ 63 ] 
 | Liaison statement to Working Party 1B concerning WRC-11 Agenda item 1.19 | WP 4A | 2008-06-23 | 
|  | [ 36 ] 
 | Liaison statement to Working Parties 5A, 5C and 6X (copy for information and possible action to Working Parties 3M, 4B, 6D, 6G and 7D) - Use of the band 21.4-22 GHz for broadcasting-satellite service and associated  feeder-link bands in Regions 1 and 3 
(WRC-11 Agenda item 1.13) | WP 4A | 2008-05-06 | 
| Resultats:8 documents 
 | 
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