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very high frequency
(Telecommunications) very high frequency
or vhf or V.H.F.,
very high frequency.
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|Noun||1.||VHF - a group of illnesses caused by a viral infection (usually restricted to a specific geographic area); fever and gastrointestinal symptoms are followed by capillary hemorrhage|
Argentine hemorrhagic fever - hemorrhagic fever with neurological signs; caused by the Junin virus
Ebola, Ebola fever, Ebola hemorrhagic fever - a severe and often fatal disease in humans and nonhuman primates (monkeys and chimpanzees) caused by the Ebola virus; characterized by high fever and severe internal bleeding; can be spread from person to person; is largely limited to Africa
Lassa fever - an acute contagious viral disease of central western Africa; characterized by fever and inflammation and muscular pains and difficulty swallowing; can be used as a bioweapon
Crimea-Congo hemorrhagic fever - an infection common in Arab states caused by a bunyavirus; transmitted by a tick that thrives on sheep
Rift Valley fever - an infection common in Africa caused by a bunyavirus; transmitted by mosquitoes or by handling infected animals
|2.||VHF - 30 to 300 megahertz |
radio frequency - an electromagnetic wave frequency between audio and infrared
electromagnetic spectrum - the entire frequency range of electromagnetic waves