hogerfrequentie
Hogerfrequentie, a Dutch term, translates to "high frequency" in English. It generally refers to electromagnetic waves or electrical signals that operate within a range of frequencies considered higher than those used for standard audio or power transmission. In the context of radio waves, high frequency typically encompasses the band from 3 to 30 megahertz (MHz). This portion of the radio spectrum is known for its ability to propagate over long distances by reflecting off the ionosphere, a phenomenon known as skywave propagation.
This characteristic makes high frequency bands crucial for long-range communication, particularly for amateur radio operators, shortwave