Motor vehicles as well as infrastructure stations, which are stationary and which are installed on the side of the road such as traffic light systems for example, are provided as participants in a Car-to-X network. The vehicles include an automobile radio together with the communication unit for communicating with other participants of the network. In the event that such a vehicle travels through a region, for example a tunnel or a forest, in which a direct antenna reception of the radio signal of the radio station set in the automobile radio is poor or impossible and thus the reception quality of said radio signal is poor, the driver can be irritated or angered due to static or other disruptive noises as well as a loss of sound. Reception of radio signals in a Car-to-X communication system is improved by forwarding radio signals from one user to another.