The CIRAF zones are used to define the target service area. The agreed set of 911 test points is used by the HF software to calculate field strength values at each test point within the required service area.
The mention of the name of a geographical area on this map, as well as the tracing of borders, do not imply, on the part of ITU, any position with respect to the political status of such a geographical area, or official recognition of these borders. The map delineates the areas only for the purpose of radiocommunications in the relevant service.