Radiocommunication Study Group 3 WP 3J WP 3K WP 3L WP 3M Radiowave propagation Propagation of radio waves in ionized and non-ionized media and the characteristics of radio noise, for the purpose of improving radiocommunication systems. More (updated version under preparation) Structure Working Party 3J (WP 3J) Propagation fundamentals Working Party 3K (WP 3K) Point-to-area propagation Working Party 3L (WP 3L) Ionospheric propagation and radio noise Working Party 3M (WP 3M) Point-to-point and Earth-space propagation Rapporteur and Correspondence Groups of WP 3J, WP 3K, WP 3L and WP 3M – How to use Disbanded Groups Next Meeting Thursday 2025-06-19Status : Planned – Add to Calendar Registration Contributions Submission rsg1@itu.int Meetings Sharepoint site Meetings Sessions Virtual Meetings Sessions Webcast Captioning All meetings (SG 1) Contributions Documents Contributions as received Contributions Template Summary Record 2021-06-03 Main Documents Administrative Documents (ADM) Information Documents (INFO) Temporary Documents (DT) Informal Documents on Sharepoint Circulars Circular Letters (LCCE) Administrative Circulars (CA) Administrative Circulars (CACE) Tools and Resources Documents Search Tool Sync Applications Study Group 3 templates for the submission of digital data sets and computer programs Document Archives