antennas(electronics) artificialsatellitesintelecommunication complementary congresses designandconstruction digitalcommunications digitaltelevision equipmentandsupplies funkverkehr gigabitcommunications governmentpolicy history interference internationalefernmelde-union internationaltelecommunicationunion lawandlegislation lowvoltageintegratedcircuits maintenanceandrepair metaloxidesemiconductors microwavecommunicationsystems milimeterwaves millimeterwavecommunicationsystems millimeterwavedevices millimeterwaves mobileradiostations radio radiofrequencyallocation radiomeasurements radiowaves recht regulierung repairing signalprocessing spacesecurity störung submillimeterwaves television televisionbroadcasting transmittersandtransmission unitedstates videocassetterecorders