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List of International Monitoring Stations (List VIII)

The List of International Monitoring S​tations (List VIII) is a service publication prepared by the Radiocommunication Bureau (BR), in accordance with provision Nos. 16.1, 16.2 and 16.3 of the
Radio Regulations (RR) and issued in application of provision No. 20.12 of the RR.



List VIII is a necessary document for operating in the International Monitoring System (IMS).

It contains information, submitted by Administrations, about the different functions that each monitoring station is able to perform, both in the terrestrial and in the space radiocommunication services.

In cases of Harmful Interference (HI), where rapid action is required, information may be exchanged directly between stations of the IMS.  

It is essential that those administrations already having terrestrial and/or space monitoring facilities, which participate in the IMS, notify the BR of the particulars of their monitoring stations for inclusion into this List.


​Information submitted by Administrations concerning the different functions that each monitoring station is able to perform in the terrestrial and/or the space radiocommunication services. 

Retrieval of data