More cars are fitted with digital radio as standard than ever before, but plenty of new cars do not come with digital radio.

The radio should be fully portable, with battery and mains options for power and decent sound.

In the UK it’s not possible to receive DAB or DAB+ radio stations from other countries. The digital radio stations which are available around the country all come from UK transmitters.

A reader emails to ask how they can find digital rock music radio station Planet Rock.

A digital radio ensemble is a collection of radio stations. Most of the time you won’t be aware of ensembles, but some car radios make them more apparent.

Some digital radio users have found that Absolute 80s, Planet Rock and Premier Christian Radio are no longer available after re-tuning. This is due to the stations moving to a new network of transmitters.

On digital radio there are several ‘secondary’ services. These are like radio stations which only operate on a part-time basis, or come on air to provide alternative programming to the main service.

The UK’s national radio stations are all available on DAB Digital Radio, as are many regional radio stations. Some local radio stations do not broadcast on digital radio.

Both digital radios and internet radios have their advantages, and several models offer both modes at the press of a button.

Most digital radios on sale in the UK do receive FM signals. Radios with both DAB and medium wave are less common.