| 释义 |
very high frequency
very high frequencyn. Abbr. VHF A band of radio frequencies falling between 30 and 300 megahertz.very high frequency n (Telecommunications) a radio-frequency band or radio frequency lying between 30 and 300 megahertz. Abbreviation: VHF ver′y high` fre′quency
n. any frequency between 30 and 300 megahertz. Abbr.: VHF [1920–25] Thesaurus| Noun | 1. |  very high frequency - 30 to 300 megahertz VHFradio frequency - an electromagnetic wave frequency between audio and infraredelectromagnetic spectrum - the entire frequency range of electromagnetic waves |
Translationsvery high frequency
very high frequency[¦ver·ē ¦hī ′frē·kwən·sē] (communications) The band of frequencies from 30 to 300 megahertz in the radio spectrum, corresponding to wavelengths of 1 to 10 meters. Abbreviated VHF. very high frequency (VHF) Typical line-of-sight distances for VHF reception.The range of radio frequencies between 30 and 300 MHz. Portions of this band, 108 to 118 MHz, are used for certain NAVAIDs (navigational aids); 118 to 136 MHz are used for civil air-to-ground voice communications. Other frequencies in this band are used for purposes not related to air traffic control. Very high frequencies are line-of-sight frequencies with practically no ground-wave element. The VHF range increases with height. The maximum ranges for voice communication are about 185 miles (300 km). Communication systems operating VHF bands provide high-quality communications between aircraft and ground stations. In spite of being line-of-sight communication, long-range communications using VHF are possible through repeater stations and satellite links.Very High Frequency
Very High FrequencyAlso called VHF. Radio frequency between 30 and 300 megahertz. Very high frequency is used for FM radio and television broadcasts, among other things.See VHF
See VHFvery high frequency
Synonyms for very high frequencynoun 30 to 300 megahertzSynonymsRelated Words- radio frequency
- electromagnetic spectrum
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