high-frequency range

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• Frequency range — A frequency range or frequency band is a range of wave frequencies. It most often refers to either a range of frequencies in sound or a range of frequencies in electromagnetic radiation, which includes light and radio waves. Many radio devices… …   Wikipedia

• High frequency — (HF) radio frequencies are 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… …   Wikipedia

• High frequency ventilation — is a type of mechanical ventilation that employs very high respiratory rates (>60 breaths per minute) and very small tidal volumes (usually below anatomical dead space).cite journal |author=Krishnan JA, Brower RG |title=High frequency ventilation …   Wikipedia

• high frequency — high frequency, adj. the range of frequencies in the radio spectrum between 3 and 30 megahertz. [1890 95] * * * …   Universalium

• High Frequency Active Auroral Research Program — HAARP is often confused with Project HARP, the High Altitude Research Project (a joint project of The Pentagon and the Canadian Department of National Defence).The High Frequency Active Auroral Research Program (HAARP) is an investigation project …   Wikipedia

• High frequency limit — The high frequency limit of hearing is the upper extent to which a particular animal can perceive sound. Perhaps the most commonly known aspect of the psychoacoustic model is that humans cannot hear frequencies above and below certain thresholds; …   Wikipedia

• Frequency range of hearing for humans and selected animals — ▪ Table Frequency range of hearing for humans and selected animals animal frequency (hertz)   low high humans      20   20,000 cats    100   32,000 dogs      40   46,000 horses      31   40,000 elephants      16   12,000 cattle      16   40,000… …   Universalium

• high frequency — high′ fre′quency n. rtv the range of frequencies in the radio spectrum between 3 and 30 megahertz • Etymology: 1890–95 high′ fre′quen•cy, adj …   From formal English to slang

• high frequency — range of radio frequencies between 3 and 30 megahertz …   English contemporary dictionary

• high frequency — The frequency band between 3 and 30 MHz. This normally is used for long range air to ground communications …   Aviation dictionary

• high-frequency (HF) bands —    Any frequency above the audible range band P: 225 MHz 300 MHz; band J: 350 MHz 530 MHz; band L: 390 MHz 1550 MHz; band S: 1.55 GHz 5.20 GHz; band C: 3.90 GHz 6.20 GHz; band X: 5.20 GHz 10.90 GHz; band K: 10.90 GHz 36.00 GHz; band K: 15.35 GHz… …   IT glossary of terms, acronyms and abbreviations