This paper introduces the new digital radio system Digital Radio Mondiale ( from an operational point of view. The system offers a range of new transmission parameters that put the broadcaster into the position of adapting the digital output signal to the specific channel conditions (and impairments) observed on the transmission channel. The text gives an overview on these parameters before describing the work of the DRM System Evaluation Group and how it contributes in building up a knowledge database helping the broadcaster to operate digital DRM transmissions successfully.