RES765 – 420 – c) that the operation of the telecommand links referred to in considering g) would cause harmful interference to the satellite receivers on board the satellites referred to in considering a), recognizing a) that it is necessary to have stable regulatory certainty in order to be able to provide long-term continuity for the operation of DCS; b) that these DCS represent a long-term effort and investment; c) that it is necessary to ensure the operations of existing and future systems that usually implement low or moderate output power levels for EESS, MetSat and MSS systems referred to in considering a); d) that the establishment of in-band power limits for earth stations within the Radio Regulations applicable to the EESS, MetSat and MSS will bring confidence for DCS using these frequency bands, resolves to invite the 2019 World Radiocommunication Conference to take into account the results of ITU-R studies, and consider the possibility of establishing in-band power limits for earth stations in the EESS and MetSat in the frequency bands 401-403 MHz and in the MSS frequency band 399.9-400.05 MHz, invites ITU-R to conduct and complete, in time for WRC-19, the necessary technical, operational and regulatory studies on the possibility of establishing in-band power limits for earth stations in the EESS and MetSat in the frequency band 401-403 MHz and the MSS in the frequency band 399.9-400.05 MHz, invites administrations to participate actively in the studies and provide the technical and operational characteristics of the systems involved by submitting contributions to ITU-R, instructs the Secretary-General to bring this Resolution to the attention of the World Meteorological Organization (WMO) and other international and regional organizations concerned.