RES759 – 404 – ADD RESOLUTION 759 (WRC-15) Technical studies on the coexistence of the radiolocation service and the amateur, amateur-satellite and radio astronomy services in the frequency band 76-81 GHz The World Radiocommunication Conference (Geneva, 2015), considering a) that the frequency band 77.5-78 GHz is allocated to the amateur and amateur-satellite services on a primary basis; b) that the frequency band 77.5-78 GHz is allocated to the radio astronomy service (RAS) on a secondary basis; c) that this conference has allocated the frequency band 77.5-78 GHz to the radiolocation service on a primary basis; d) that under No. 5.149, administrations, in making assignments to stations of services other than radio astronomy to which the frequency band 76-86 GHz is allocated, are urged to take all practicable steps to protect the RAS from harmful interference, noting a) that the allocation of the frequency band 76-81 GHz to the radiolocation service is used by radar applications and that a radar station may use the entire frequency band 76-81 GHz; b) that technical parameters of radars for automotive applications are contained in Recommendation ITU-R M.2057; c) that sharing studies between the amateur, amateur-satellite and radio astronomy services and the radiolocation service are limited to automotive radars as described in Report ITU-R M.2322, recognizing a) that administrations may benefit from the availability of studies and guidelines about the protection of the RAS in the frequency band 76-81 GHz; b) that the protection of the RAS, in accordance with considering d), may require additional measures in some countries, such as the definition of specific exclusion zones around RAS sites, resolves to invite the ITU Radiocommunication Sector to perform studies to assist administrations in ensuring compatibility between applications of the amateur, amateur-satellite and radio astronomy services and radiolocation service applications in the frequency band 76-81 GHz, taking into account those already completed in Report ITU-R M.2322, and develop ITU-R Recommendations and Reports, as appropriate.