There are four main potential problems with DAB reception in cars:
Complete loss of signal - DAB reception is very robust but when the signal is very weak the station you are listening to can disappear completely.
Temporary blocking of the signal - Trees, hills and buildings can also block the incoming DAB signal to the car aerial, causing small areas of poor reception. This causes temporary blocking to your DAB station reception.
The type of aerial being used - DAB uses different frequencies from FM radio. We advise you check that your antenna is able to receive DAB, in majority of cases you will need a new antenna. An exception is "helically wound" FM aerials.
Moving through areas of no DAB coverage - There are currently some areas of the UK that do not have DAB coverage. However, we are expanding this network.
If you drive in an area of weak or blocked DAB signal, you’ll find sometimes the station reception suddenly breaks up or is lost altogether. This is much more obvious than when listening to analogue radio, where the sound quality gets gradually worse as the signal gets weaker. If you lose your DAB signal you can always re-tune to FM or AM if you have it, until you reach a better reception area.
A helically wound car aerial is short and stubby and is usually roof mounted. They are often fitted to newer model cars and are designed to amplify the FM signal, so may not work effectively with a DAB radio. You can either replace your existing car aerial with a combined FM/DAB aerial, or you can buy a separate DAB aerial to sit alongside your existing FM aerial.