AFS means Alternative Frequency Switching or Signalling. This is a key feature and integral part of the DRM standard. For example, where the same programme is simultaneously available on other frequencies in a particular area or region (for example the same programme is broadcast in both analogue and digital), the receiver can select the stronger or most robust signal without any action required by the listener. As demonstrated live at the recent BES exhibition from a locally powered DRM transmitter, set up by RFmondial, receivers of different brands on display at BES were switching between versions of the same programme. AFS is available across all bands and is meant to ensure continuous reception especially when on the move.