The twelve members of the Radio Regulations Board (RRB) are elected at the Plenipotentiary Conference.
They perform their duties independently and on a part-time basis, normally meeting three times, but no more than four times a year, in Geneva.

The Board :

approves draft new or revised Rules of Procedure, used by the Radiocommunication Bureau in cases where provisions of the Radio Regulations and regional agreements cannot be applied for registering Member States’ frequency assignments 
addresses matters referred by the Bureau which cannot be resolved through application of the Radio Regulations and Rules of Procedure;
considers the Bureau’s reports on unresolved interference investigations carried out at the request of one or more administrations and formulates recommendations;
provides advice to Radiocommunication Conferences and the Radiocommunication Assemblies;
considers Member States’ appeals against the Bureau’s decisions in the processing/treatment of frequency assignments;
performs any additional duties prescribed by a competent conference or by the Council. 
(See also Article 10 of the ITU Convention and Part C of the Rules of Procedure on the internal arrangements and working methods of the Radio Regulations Board.) 

The Director of the Bureau is the Executive Secretary of the Radio Regulations Board.