Recommendation ITU-R BO.1443 – Reference BSS earth station antenna patterns for use in interference assessment involving non-GSO satellites in frequency bands covered by RR Appen- dix S30, describes broadcasting-satellite service (BSS) reference antenna patterns to be used in non-geostationary-satellite service (non-GSO) interference analyses. Of particular interest are small, offset-fed BSS earth station antennas which have non-axially symmetric patterns. Millions of these antennas have been deployed worldwide. To support the development of these antenna reference patterns several Sector Members performed detailed measurements, analyses and modelling of three-dimensional antenna patterns. A Special Rapporteur Group was formed to collect and organize the extensive data sets and analyses performed during the development of the Recommendation described above. It was felt that information of this nature would be valuable in future BSS studies.