This section of IEC 835-3 gives definitions and methods of measurement of the electrical characteristics of satellite earth-station antennas for frequencies above about 1 GHz. The methods are applicable to reflector type antennas for digital and analog signal transmission. The purpose of the measurements is mainly to confirm that earth-station antenna performance complies with the requirements generally given by the satellite system provider based on the Radio Regulations and applicable international standards such as ITU-R Recommendation S.733-1 and the CCIR Recommendations 465-4, 580-3, 731 and 732. The measurement procedures are often prescribed by international satellite service organizations. Measurements are performed under the condition that all antenna subsystem equipment is connected unless otherwise stated