• ITU-R Meeting schedule
• Meeting sessions / ​Virtual meeting sessions​​​
  
• ITU-R Event Registration and Practical Information
• SG 3 Workshop: Overview and Activities
• CCIR/ITU-R Study Groups 90th anniversary​​​​​

Software and Databanks (ITU-R P. Series Recommendations)  
• Software, Data and Validation examples for ionospheric and tropospheric propagation and radio noise
• Formatted tables for the submission of data
• Databank DBSG3 English only
• Radio Noise Databank English only
• Fundamental indices of the ionospheric propagation English only​
• foF2 and M(3000)F2 data English only

   ITU Journal: ICT Discoveries​​​

   Emergency​ Radiocommunications​​​​

• Constitution and Convention 
  
• Final Acts of PP ​​
• Radio Regulations
  
• Rules of Procedure 
• Final A​cts WRC-19
  
• Minutes of the WRC-19 Plenaries​
  
• WRC-19 decisions​ 
  
• ​Plenary decisions of past WRCs not reflected in the Rad​io Regulations​
  
• ​W(A)RC Resolutions ​
  
• W(A)RC Recom​mendations​​ ​​​
  
• CA/251​ (Results of CPM23-1) ​​
• RA-19​ ​Summary Reports​​
• Working methods (Resolution ITU-R 1)
• Guidelines for the working methods
• Format of ITU-R Recommendations
• ITU Style Guides 
• ITU Terms and Definitions Database 
• Structure of Radiocommunication Study Groups (Resolution ITU-R 4)
• Liaison and collaboration with other relevant organizations (Resolution ITU-R 9)

• ITU-R Questions - SG 3
• Recommendations - ITU-R P Series
• Reports - ITU-R  P Series
• ITU-R Handbooks
• ITU-R Resolutions
• ITU-R Opinions
• Decisions
• Status of studies​​
• Assignment of texts to the Study Group 3 Sub-Groups​ 

• Administrative Circulars (CA)
• Administrative Circulars (CACE)
• 3/LCCEs
• Administrative Circulars (CAR) - Archives

• SG 3 Chairman and Vice-Chairmen
• SG 3 Working Party Chairmen and Vice-Chairmen
• Counsellor for SG 3

• Remote participation
• ITU-R Electronic facilities
• Webcast ​​​
  

• ITU Patent Statement and Licensing Declaration Information
• ITU Software Copyright Guidelines
  (13 April 2012)
• Software Copyright Statement and Licensing Declaration form
  (13 April 2012)