Five years before the assignment is brought into use, for assignments to high altitude platform stations in the fixed service in the bands 47.2- 47.5 GHz and 47.9 - 48.2 GHz (see RR No. 11.26);
Three years before the assignment is brought into use, for terrestrial stations involved in coordination with a satellite network (i.e., if the terrestrial station is operating in band shared with a space service and located within the coordination area of receiving earth station) - see RR No. 11.25;
Three months before the assignment is brought into use, for all other terrestrial stations (see RR No. 11.24).