CISPR 16-1-4 is the part of the CISPR 16 series that specifies the antennas and the test sites used for radiated disturbance measurements. Because a radiated emission result is only meaningful if the measurement has been made with equipment of known performance on a site whose behaviour is characterised, this document underpins every such measurement in an EMC laboratory. It defines the electrical and mechanical requirements for the antennas used at the different frequency ranges, including the broadband antennas used for the lower part of the spectrum and the horns used at higher frequencies, and it specifies their gain, the antenna factor and the way these quantities are calibrated. It then defines the requirements for the test sites, covering the open area test site, the semi-anechoic chamber and the fully anechoic room, and prescribes the methods by which their performance is validated: the normalised site attenuation for the traditional measurement distance, and the site voltage standing wave ratio for the alternative validation method. The acceptance criteria for each are given.