Equipment comprising an array of radio antennas (101, 102, 103, 605... 60N), each antenna being connected via at least one associated reception channel (110, 111, 112) to a processing unit adapted to implement a beamforming technique, the equipment being characterised in that it comprises a switching device placed as a cutoff between the antennas and the associated reception channels, the switching device comprising: - input interfaces (A, B, C) in the same number as the antennas, each input interface allowing a connection of an antenna, - output interfaces (1, 2, 3) in the same number as the reception channels, each output interface allowing a connection of a reception channel, the switching device comprising two operating modes: - a first so-called operational operating mode, each input interface then being connected directly to a different output interface in order to connect each antenna with at least its associated reception channel, - a second so-called calibration operating mode, an input interface corresponding to a predetermined antenna then being connected to all the output interfaces in order to transmit the electrical signal coming from the predetermined antenna to all the reception channels, the equipment being adapted to implement a method for calibrating the reception channels when the switching device is in the second operating mode, characterised in that the switching device further comprises: - a chain of electrical-signal divider elements (300, 310), each divider element comprising one input and two outputs, the input of the first divider element of the chain being connected to the input interface of the predetermined antenna, an output of the first divider element being connected to the output interface corresponding to the input interface, the chain of divider elements being adapted to divide the electrical signal coming from the input interface connected to the predetermined antenna into as many electrical signals are there are reception channels, - switches (320, 321, 322), each switch comprising two inputs and one output, the outputs of the switches being connected to each output interface, except for the one corresponding to the reception channel of the predetermined antenna, each input of the switches being connected to an input interface and to a divider element of the chain of divider elements, the switching element making it possible to connect one or other of these two inputs to the output interface, the switches being adapted for: o in the first operating mode, transmitting the electrical signal coming from each input interface to at least one output interface, each antenna then being connected at least to its associated reception channel, o in the second operating mode, transmitting the electrical signal coming from the divider element, the predetermined antenna then being connected to all the reception channels. - input interfaces (A, B, C) in the same number as the antennas, each input interface allowing a connection of an antenna, - output interfaces (1, 2, 3) in the same number as the reception channels, each output interface allowing a connection of a reception channel, - a first so-called operational operating mode, each input interface then being connected directly to a different output interface in order to connect each antenna with at least its associated reception channel, - a second so-called calibration operating mode, an input interface corresponding to a predetermined antenna then being connected to all the output interfaces in order to transmit the electrical signal coming from the predetermined antenna to all the reception channels, - a chain of electrical-signal divider elements (300, 310), each divider element comprising one input and two outputs, the input of the first divider element of the chain being connected to the input interface of the predetermined antenna, an output of the first divider element being connected to the output interface corresponding to the input interface, the chain of divider elements being adapted to divide the electrical signal coming from the input interface connected to the predetermined antenna into as many electrical signals are there are reception channels, - switches (320, 321, 322), each switch comprising two inputs and one output, the outputs of the switches being connected to each output interface, except for the one corresponding to the reception channel of the predetermined antenna, each input of the switches being connected to an input interface and to a divider element of the chain of divider elements, the switching element making it possible to connect one or other of these two inputs to the output interface, o in the first operating mode, transmitting the electrical signal coming from each input interface to at least one output interface, each antenna then being connected at least to its associated reception channel, o in the second operating mode, transmitting the electrical signal coming from the divider element, the predetermined antenna then being connected to all the reception channels.