What does HD in HD Radio signify according to Technician A?

The correct choice identifies HD in HD Radio as Hybrid Digital radio. This term reflects the technology used in HD Radio broadcasting, which combines digital and analog signals. This hybrid approach allows for improved audio quality and more efficient use of the limited radio spectrum.

In HD Radio, the digital signal transmits alongside the traditional analog signal, providing listeners with options for both standard digital audio and higher-fidelity sound, as well as additional channels of programming. The hybrid aspect is crucial because it ensures that HD Radio can maintain compatibility with existing analog radios while offering enhanced capabilities.

Understanding the meaning of HD as Hybrid Digital helps clarify how this technology functions, enhancing the listener's experience by offering clearer sound, reduced interference, and expanded programming. Other interpretations of HD, such as Haul-Duty or Hidden Data, do not align with the established nomenclature within the industry for broadcasting technology.