HD Radio allows conventional (or terrestrial) AM and FM stations to broadcast their content over digital signals. Appropriating an abbreviation from high-definition TV, HD Radio offers better ...

As a result, radios are more easily designed to pick up both signals, which is why the HD in HD Radio stands for "hybrid digital," not "high definition." HD Radios tune into the station's analog ...

Sept., 26, 2007 – Ford Motor Co. today became the first automaker to offer HD Digital Radio across multiple product lines. The dealer-installed high-definition radio option is now available ...