The dab radio can be interfered with in several ways, preventing it from receiving any stations.  This may be because you are not located in an area with good reception. Dab radios need a strong signal to function properly, so if you're in a rural area or an area with a lot of interference, you may not be able to hear any stations.  Your antenna may not be properly positioned as well. Your antenna must be pointing towards the nearest dab radio station.  You should also make sure that your portable dab radio is fully charged if you're using one. A low battery may make it difficult for the device to pick up a strong signal.