JLR documents make reference to DAB: Digital Audio Broadcasting.
DAB serves 97+% of the UK market and is available in many other markets around the world.
The USA market uses a different technology for digital radio - IBOC: In Band On-Channel.

See: https://www.fcc.gov/media/policy/dig...oadcasting-dab

The topic is pertinent to CCF: Car Configuration Files and reading electrical diagrams and always makes me pause when I run across it.
Hopefully, documenting this topic for others will help me remember a bit easier!