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• 08:54, 8 May 2022 KJ7RRV talk contribs created page HF (Created page with "'''High frequency''' ('''HF''') is the range of radio waves between 3 and 30 megahertz (MHz). Frequencies immediately below HF are denoted medium frequency (MF), while the next band of higher frequencies is known as the very high frequency (VHF) band. The HF band is a major part of the shortwave band of frequencies, so broadcast stations using these frequencies are often called shortwave stations. Because radio waves in this band can be reflected back to Ear...")