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- High_frequency abstract "High frequency (HF) is the ITU-designated range of radio frequency electromagnetic waves (radio waves) between 3 and 30 MHz. Also known as the decameter band or decameter wave as the wavelengths range from one to ten decameters (ten to one hundred metres). Frequencies immediately below HF are denoted medium frequency (MF), and the next higher frequencies are known as very high frequency (VHF). The HF band is a major part of the shortwave band of frequencies, so communication at these frequencies is often called shortwave radio. Because radio waves in this band can be reflected back to Earth by the ionosphere layer in the atmosphere, called "skip" or skywave propagation, these frequencies can be used for long distance communication, at intercontinental distances. The band is used by international shortwave broadcasting stations (2.310 - 25.820 MHz), aviation communication, government time stations, weather stations, amateur radio and citizens band services, among other uses.".
- High_frequency individualisedGnd "4129005-7".
- High_frequency thumbnail HighFrequency.png?width=300.
- High_frequency wikiPageExternalLink solar.
- High_frequency wikiPageExternalLink Default.aspx.
- High_frequency wikiPageExternalLink hfw05.
- High_frequency wikiPageExternalLink www.emcesd.com.
- High_frequency wikiPageExternalLink hf.html.
- High_frequency wikiPageExternalLink HighFrequencyNoise_InformationalPage_05.pdf.
- High_frequency wikiPageExternalLink bands.html.
- High_frequency wikiPageID "178937".
- High_frequency wikiPageRevisionID "599711491".
- High_frequency freq "3".
- High_frequency gnd "4129005".
- High_frequency hasPhotoCollection High_frequency.
- High_frequency typ "s".
- High_frequency wave "600.0".
- High_frequency subject Category:Radio_spectrum.
- High_frequency subject Category:Wireless.
- High_frequency type Agent.
- High_frequency type Agent.
- High_frequency type Thing.
- High_frequency comment "High frequency (HF) is the ITU-designated range of radio frequency electromagnetic waves (radio waves) between 3 and 30 MHz. Also known as the decameter band or decameter wave as the wavelengths range from one to ten decameters (ten to one hundred metres). Frequencies immediately below HF are denoted medium frequency (MF), and the next higher frequencies are known as very high frequency (VHF).".
- High_frequency label "HF".
- High_frequency label "Haute fréquence".
- High_frequency label "High frequency".
- High_frequency label "High frequency".
- High_frequency label "Kurzwelle".
- High_frequency label "高頻".
- High_frequency sameAs Kurzwelle.
- High_frequency sameAs HF.
- High_frequency sameAs Haute_fréquence.
- High_frequency sameAs Frekuensi_tinggi.
- High_frequency sameAs High_frequency.
- High_frequency sameAs m.018dw1.
- High_frequency sameAs Q15115271.
- High_frequency sameAs Q15115271.
- High_frequency wasDerivedFrom High_frequency?oldid=599711491.
- High_frequency depiction HighFrequency.png.
- High_frequency isPrimaryTopicOf High_frequency.
