Encyclopedia > HF

Article Content

High Frequency

Redirected from HF

HF is an abbreviation for High Frequency, and is in particular used for the frequency for radio communication between 3 and 30 MHz.

Since the ionosphere reflects HF radio waves quite well, the HF radio band is extensively used for long range terrestial communication, since HF radio waves may travel around the globe in the channel formed by the ionosphere and the Earth's surface.

Featured Article

Bullying

... of authority. The first to have the title of "Tyrant" was Pisistratus in 560 BC. In modern times Tyrant has come to mean a dictator who rules with ...