Just got back from holiday in America and they kept talking about hd radio, I know about hd tv, dab radio but have never heard about hd radio can anyone explain to me please. many thanks.
It's the US version of DAB, sort of, available on both FM and AM. You can read more about it here.
Consulting Editor, What Hi-Fi? Sound and Vision/whathifi.com Audio Editor, Gramophone
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