A hypersonic high enthalpy, arc heated, blow-down wind tunnel has been recently developed at Centrospazio in order to perform experiments in the low to medium Reynolds number range (10^4 - 10^6). The tunnel is capable of delivering Mach 6 flows up to 2-5 MJ/kg in specific total enthalpy on an effective test section 60 mm in diameter. It operates in pulsed quasi-steady mode, with running times ranging from 10 to 30 ms. The uniformity of the potential core of the flowfield has been experimentally assessed in different operational points of the facility, demonstrating good steadyness and repeatability of the test conditions. Activities are presently ongoing aimed at defining the wind tunnel overall capabilities by investigating in detail its characteristics as well as at expanding its operational envelope.