RES148 – 234 – instructs the Radiocommunication Bureau 1 to cancel from the Master Register and the List assignments to “existing system(s)” as referred to in considering c) upon expiry of their notified period of validity; 2 to calculate aggregate C/I of the “existing systems” as referred to in considering c) without taking into account the interference between these systems; 3 to take the appropriate actions in accordance with resolves above.