A device (1) for measuring a wireless channel in any frequency band, with the device rotating and being autonomous. The device (1) comprises at least one antenna (2) that is connected to a processor (3) and powered by a battery, with all being mounted on a rotary platform (5), and with the processor (3) being complimented by at least one encoder (6) located in the stationary portion of the device (1) and an axle (7) of the rotary platform (5) that is connected to a motor (8) via the axle (7) in order to drive the rotary platform (5). The device (1) makes it possible to perform evaluations of the channel of the electromagnetic spectrum, not necessarily for 60 GHz. This autonomy makes it possible to perform measurements on the ground in a simple manner without the need to carry around complex equipment or additional power sources. In addition, since it permits rotation at different speeds, it can measure changes in the medium that are impossible to measure using other equipment that is limited in terms of rotational speed.