A data acquisition system that comprises several mobile terminals, each comprising a broadcast receiver for receiving the broadcast signals that are unidirectionally transmitted from a broadcasting station via an air interface, and a mobile radio module for the communication via a mobile network. Furthermore, the mobile terminals each include means for providing data accountings; their contents depending on the broadcast signals received and, for example, on data relating to the signal quality of the received broadcast signals. The data acquisition system comprises a memory connected to the mobile network. The data accountings provided are transmitted from the mobile terminals by means of the mobile radio modules via the mobile network where they are stored in the memory.