Bristol’s pyramidal-cone anechoic chamber is a key facility for wireless research. The chamber measures 8m x 4.5m x 5m and was designed and certified by Emerson & Cuming. It is served by a 65 GHz Vector Network Analyser, a two-axis positioner and a polarised source that allows the measurement of full 3D complex polarimetric radiation patterns. The facility is able to characterise single antenna elements and arrays over a frequency range from a few hundred MHz to tens of GHz.