RES761 – 410 – ADD RESOLUTION 761 (WRC-15) Compatibility of International Mobile Telecommunications and broadcasting-satellite service (sound) in the frequency band 1 452-1 492 MHz in Regions 1 and 3 The World Radiocommunication Conference (Geneva, 2015), noting a) Recommendation ITU-R M.1459, “Protection criteria for telemetry systems in the aeronautical mobile service and mitigation techniques to facilitate sharing with geostationary broadcasting-satellite and mobile-satellite services in the frequency bands 1 452-1 525 MHz and 2 310-2 360 MHz”; b) that ITU Radiocommunication Bureau (ITU-R) studies provides useful information on the power flux-density (pfd) level to protect broadcasting-satellite service (BSS) earth stations that could be used for coordination purposes,recognizing a) that the frequency band 1 452-1 492 MHz is allocated to BSS (sound) and the mobile service (MS) on a primary basis; b) that the sharing conditions between BSS (sound) and MS are currently governed by No. 9.11; c) that the application of No. 9.11 does not provide long-term stability for the operation of International Mobile Telecommunications (IMT) due to the fact that only the IMT systems that would come into operation within the next three years would be protected if their coordination is agreed, and only for those three years; d) that coordination requests for BSS (sound) in the frequency band 1 467-1 492 MHz have been submitted to the ITU Radiocommunication Bureau, moreover some BSS (sound) satellite systems are planned to be launched before WRC-19, taking into account a) that currently there is no power flux-density (pfd) limit for the frequency band 1 452-1 492 MHz in Article 21 to protect MS (service area protection); b) that agreement was not reached at this conference on the results of technical and regulatory studies so far carried out on sharing of the frequency band 1 452-1 492 MHz by IMT and BSS; c) that there is no pfd limit at the border for IMT systems, and IMT systems which will be deployed in this frequency band will have to apply the coordination procedure under No. 9.19 in order to protect BSS (sound) systems deployed in neighbouring countries,