DAB is Digital Audio Broadcasting and is available to Android Headunits as an add-on USB device. The DAB+ USB connects to a free USB port, and the aerial can be screen-mounted or roof mounted and the stations are selected with an app.
Which is the best DAB USB adaptor to get?
Many perfectly good generic USB DAB adaptors are designed for Android headunits, but we like this one on Amazon. This model has the standard USB 2.0 connector and an antenna interface with the SMA connector. It is the standard SMA connectors that make the aerial upgrade easier.
How do I use the DAB adaptor?
An app on the headunit controls DAB Station selection and tuning. There is always a DAB app installed on the Android headunit at the factory, but there is a very popular replacement for the manufacturer-supplied app called DAB-Z on the Play Store. Just tap the app and start scanning for stations. If your aerial is connected, you will get DAB in the country with the signal available.
DAB reception is highly dependent on the aerial used to receive the signal. Often the supplied stick on the aerial is not good enough for a clear DAB signal resulting in popping and squawking or no stations found. Better reception can be obtained with a roof mount over the windscreen mount. If you want to enjoy DAB+ Radio to its full, get the roof-mounted aerial