| Circulaires | 
| 
 | Numéro 
 | Titre | Source | Date | 
|  | [ 114 ] 
 | Meeting of the Working Party 1C Rapporteur Group on developing a new edition of the ITU-R Spectrum Monitoring Handbook (Geneva, 10 - 14 November 2025) | Director, BR | 2025-07-09 | 
|  | [ 113 ] 
 | Meetings of Working Parties 1A, 1B and 1C (Geneva, 9-18 June 2025) | Director, BR | 2025-01-28 | 
|  | [ 112 ] 
 | Meetings of Working Party 1B (Geneva, 5 - 8 November 2024) and of the Working Party 1C Rapporteur Group on the Spectrum Monitoring Handbook (Geneva, 5 - 12 November 2024) | Director, BR | 2024-07-11 | 
|  | [ 111 ] 
 | Meetings of Working Parties 1A, 1B and 1C (Geneva, 12-19 June 2024) | Director, BR | 2024-02-08 | 
|  | [ 110 ] +Corr.1
 | Meetings of Working Parties 1A, 1B and 1C (Thessaloniki, Greece, 29 May - 2 June 2023) | Director, BR | 2023-01-30 | 
|  | [ 109 ] 
 | Meetings of Working Parties 1A, 1B and 1C (Geneva, 28 June - 7 July 2022) | BR, Director | 2022-02-07 | 
|  | [ 108 ] 
 | Meetings of Working Parties 1A, 1B and 1C (e-Meeting, 3-12 November 2021) | BR, Director | 2021-07-27 | 
|  | [ 107 ] 
 | Meetings of Working Parties 1A, 1B and 1C (e-Meeting, 25 May - 2 June 2021) | BR, Director | 2021-02-01 | 
|  | [ 106 ] +Corr.1
 | Meetings of Working Parties 1A, 1B and 1C (e-meeting, 24 November - 2 December 2020) | BR, Director | 2020-07-21 | 
|  | [ 105 ] +Corr.1
 | Meetings of Working Parties 1A, 1B and 1C (29 May - 5 June 2020), postponed until 24 November to 2 December 2020 | BR, Director | 2020-01-29 | 
|  | [ 104 ] 
 | Meetings of Working Parties 1A, 1B and 1C (28 May - 5 June 2019) | Director, BR | 2019-02-04 | 
|  | [ 103 ] 
 | Meeting of Working Party 1B - Spectrum management methodologies and economic strategies (Geneva, 16-20 November 2018) | Director, BR | 2018-07-26 | 
|  | [ 102 ] 
 | Meetings of Working Parties 1A, 1B and 1C (4-12 June 2018) | Director, BR | 2018-01-19 | 
|  | [ 101 ] 
 | Meetings of Working Parties 1A and 1B (23 - 30 November 2017) | Director, BR | 2017-07-25 | 
|  | [ 100 ] +Add.1
 | Meetings of Working Partes 1A, 1B and 1C (Geneva, 13-20 June 2017) | Directeur, BR | 2017-02-10 | 
|  | [ 99 ] 
 | Questionnaire prepared by ITU-R Working Party 1B relating to the operation of ubiquitously deployed earth station terminals in the context of studies under WRC-19 agenda item 9.1, issue 9.1.7 | Director, BR | 2016-12-14 | 
|  | [ 98 ] 
 | Meetings of Working Parties 1A and 1B and of the Working Party 1A Rapporteur Group on Wireless Power Transmission (22 - 30 November 2016) | Director, BR | 2016-07-15 | 
|  | [ 97 ] 
 | Meetings of Working Parties 1A, 1B and 1C (2-9 June 2016) | Director, BR | 2016-01-26 | 
|  | [ 96 ] 
 | Meetings of Working Parties 1A, 1B and 1C (3-10 June 2015) | Director, BR | 2015-02-06 | 
|  | [ 95 ] 
 | Meetings of Working Parties 1A, 1B and 1C - Geneva, from 3 to 11 June 2014 | Director, BR | 2014-01-30 | 
|  | [ 94 ] 
 | Meetings of Working Party 1B and of the Working Party 1A Rapporteur Group on the revision of the CAT Handbook (20-28 January 2014) | Director, BR | 2013-09-10 | 
|  | [ 93 ] +Corr.1
 | Meetings of Working Parties 1A, 1B and 1C - Geneva, from 4 to 11 June 2013 | Director, BR | 2013-01-17 | 
|  | [ 92 ] 
 | Meetings of Working Parties 1A, 1B and 1C - Geneva, from 6 to 13 June 2012 | Director, BR | 2012-02-10 | 
|  | [ 91 ] 
 | Proposition d'adoption par correcspondance d'un projet de nouvelle Recommandation | SG 1 | 2011-06-10 | 
|  | [ 90 ] 
 | Meetings of Working Parties 1A, 1B and 1C, Geneva,  from 25 May to 1 June 2011 | Director, BR | 2011-01-19 | 
|  | [ 89 ] 
 | Meeting of Working Party 1C - Spectrum monitoring (20-24 September 2010) | Director, BR | 2010-05-07 | 
|  | [ 88 ] 
 | Working Party 1C activities on the review of international monitoring information related to emissions from terrestrial stations in the HF bands | WP 1C | 2010-04-01 | 
|  | [ 87 ] 
 | Meetings of Working Parties 1A and 1B (21-28 June 2010) | Director, BR | 2010-03-01 | 
|  | [ 86 ] 
 | Proposition d'adoption par correspondance d'un projet de nouvelle Recommandation et d'un projet de Recommandation révisée - Proposition de suppression d'une Recommandation | SG 1 | 2009-10-23 | 
|  | [ 85 ] 
 | Meetings of Working Parties 1A and 1B and associated meeting of the WP 1C Rapporteur Group on SMH issues | Director, BR | 2009-10-12 | 
|  | [ 84 ] 
 | Meetings of Working Parties 1A, 1B and 1C (16-23 September 2009) | Director, BR | 2009-04-15 | 
|  | [ 83 ] 
 | Meetings of Working Parties 1A and 1B and associated meetings of WP 1B and WP 1C Rapporteur Groups | Director BR | 2008-09-09 | 
|  | [ 82 ] 
 | Proposed adoption by correspondence of 1 draft revised Recommendation | SG 1 | 2008-07-01 | 
|  | [ 81 ] 
 | Meetings of Working Parties 1A, 1B and 1C in conjunction with a meeting of Radiocommunication Study Group 1 | Director, BR | 2008-01-30 | 
|  | [ 80 ] 
 | Commission d'études 1 des radiocommunications - Proposition d'adoption par correspondance de 5 projets de nouvelle Recommandation | SG 1 | 2007-06-21 | 
|  | [ 79 ] 
 | Meetings of Working Parties 1A, 1B and 1C in conjunction with a meeting of Radiocommunication Study Group 1 | Director, BR | 2007-01-30 | 
|  | [ 78 ] 
 | Commission d'études 1 des radiocommunications - Proposition d'adoption par correspondance d'un projet de nouvelle Recommandation et d'un projet de Recommandation révisée | SG 1 | 2006-11-02 | 
|  | [ 77 ] 
 | Meetings for Working Parties 1A, 1B and 1C - Munich, 9-13 October 2006 | BR, Director | 2006-06-29 | 
|  | [ 76 ] 
 | Fifth meeting of Task Group 1/9 on compatibility between passive and active services | SG 1 | 2006-05-17 | 
|  | [ 75 ] 
 | Meeting of the WP 1C Rapporteur Group - Report on "Technical Specifications Receiver for Spectrum Monitoring" | SG 1 | 2006-01-11 | 
|  | [ 74 ] 
 | Fourth meeting of Task Group 1/9 on comopatibility between passive and active services | SG 1 | 2006-01-11 | 
|  | [ 73 ] 
 | Proposition d'adoption par correspondance de 7 projets de nouvelle Recommandation et de 4 projets de Recommandation révisée - Proposition de suppression d'une Recommandation | SG 1 | 2005-11-08 | 
|  | [ 72 ] 
 | Meetings of Working Parties 1A, 1B and 1C - Geneva, 26-30 September 2005 | SG 1 | 2005-07-12 | 
|  | [ 71 ] 
 | Sixth meeting of Task Group 1/8 on compatibility between ultra-wideband devices (UWB) and radiocommunication services | SG 1 | 2005-06-13 | 
|  | [ 70 ] 
 | Third meeting of Task Group 1/9 on compatibility between passive and active services | SG 1 | 2005-06-08 | 
|  | [ 69 ] 
 | Meeting of Study Group 1 Handbook Group on National Spectrum Management | SG 1 | 2005-01-14 | 
|  | [ 68 ] 
 | Proposition d'adoption par correspondance d'un projet de Recommandation révisée élaboré par la Commission d'études 1 des radiocommunications | SG 1 | 2004-12-06 | 
|  | [ 67 ] 
 | Second meeting of SG 1 Rapporteur Group to revise the Handbook on Computer-Aided techniques for Spectrum Management | SG 1 | 2004-11-12 | 
|  | [ 66 ] 
 | Cinquième réunion du Groupe d'action 1/8 sur la compatibilité entre dispositifs à bande ultralarge (UWB) et services de radiocommunication | SG 1 | 2004-11-12 | 
|  | [ 65 ] 
 | Seconde réunion du Groupe d'action 1/9 sur la compatibilité entre différents services actifs et passifs | SG 1 | 2004-11-12 | 
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