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Topic: Very high frequency

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Ultra high frequency

Radio frequency

VHF

Ultrahigh frequency

2 Meters

Radio spectrum

Ultra low frequency

Extremely high frequency

Shortwave

Super low frequency

Very low frequency

Mediumwave

Medium frequency

Amateur radio

Low frequency

	Unbelievable! - Eliminate Pain and Inflammation, Increase Range of Motion with MendMeShop Ultrasound!
		The sound waves are of a very high frequency, typically between 800,000Hz and 2,000,000Hz.
		High power units are typically used with large applicator heads to do larger parts of the body.
		This is a very common procedure used by massage therapists and chiropractors for headache sufferers.
	www.sonicmend.com (1569 words)

	Very High Frequency - MSN Encarta
		Very High Frequency, usually abbreviated VHF, band of radio-signal frequencies, ranging from about 30 megahertz (MHz) to 300 Mhz, with corresponding wavelengths ranging from about 10 to 1 m (33 to 3 ft) (see Frequency; Radio; Wave Motion).
		This frequency is used for FM and amateur radio broadcasting and for television transmission.
		"Very High Frequency," Microsoft® Encarta® Online Encyclopedia 2007
	encarta.msn.com /encyclopedia_761558292/Very_High_Frequency.html (76 words)

	Very High Frequency Radiation Makes Dark Matter Visible
		For example, only the very largest lumps of matter (the biggest clusters of galaxies) can be spotted in such maps with any confidence.
		A second problem is that many of the distant galaxies whose distortion is measured lie in front of many of the mass lumps which one would like to map, and so are unaffected by their gravity.
		One of the most advanced is the Low Frequency Array (LOFAR) in the Netherlands, a project in which the Max Planck Institute for Astrophysics is planning to take a significant role, together with a number of other German institutions.
	www.spacedaily.com /reports/Very_High_Frequency_Radiation_Makes_Dark_Matter_Visible_999.html (1433 words)

	On-Line Glossary of Solar-Terrestrial Terms
		High energy radiation (energies in excess of 100 keV) observed during large, extremely energetic solar FLARES.
		High Energy Protons are reported at the Earth in case of most of these events occurring on the western part of solar disk.
		More specifically, a region of about 0.25 AU in radial dimension in which the magnetic field strength is high and the direction of one component of the magnetic field changes appreciably by means of a rotation nearly parallel to a plane.
	sec.noaa.gov /info/glossary.html (3279 words)

	"Phenomena of Alternating Currents of Very High Frequency"
		It is thus; possible to obtain excessively high electromotive forces in the secondary circuit with a comparatively small primary current; moreover, the perfect regularity in the working of the apparatus may be relied upon.
		There is, however, a circumstance which favors the adoption of this plan, and this is, that a very high self-induction may be obtained cheaply by surrounding a comparatively small length of wire more or less completely with iron, and, furthermore, the effect may be exalted at will by causing a rapid undulation of the current.
		With frequencies as high as the above mentioned, the condenser effects are of enormous importance.
	www.tfcbooks.com /tesla/1891-02-21.htm (5093 words)

	VHF ( Very High Frequency) (Site not responding. Last check: )
		The VHF spectrum is defined as the part of the electromagnetic spectrum which includes any radiation with a wavelength between 1 and 10 metres and a frequency between 30 and 300 megahertz.
		VHF signals are widely employed for television and radio transmissions.
		VHF electromagnetic waves, unlike longer electromagnetic waves, are not strongly reflected from the atmosphere; therefore, they do not bend readily around the Earth's curvature and cannot be transmitted beyond the horizon.
	safety.inmarsat.com /vhf.htm?language=EN&textonly=False (444 words)

	Frequency Summary
		This frequency is proportional to the square root of the acceleration due to gravity divided by the pendulum's length.
		Frequency is the measurement of the number of times that a repeated event occurs per unit of time.
		In Europe, the frequency of the alternating current in mains is 50 Hz (close to the tone G), however, in North America, the frequency of the alternating current is 60 Hz (close to the tone B flat — that is, a minor third above the European frequency).
	www.bookrags.com /Frequency (887 words)

	VOR (Very High Frequency Omnirange)
		The VOR transmits in the very high frequency range of 108.1 through 117.95 MegaHertz (MHz); therefore, it is relatively free from precipitation static and annoying interference caused by storms or other weather phenomena.
		This is the system by which VOR frequencies are assigned to stations far enough apart to prevent overlapping, confusing signals.
		These frequencies are coded with a series of Morse code dots or a continuous 1020-cycle tone.
	www.allstar.fiu.edu /aero/VOR.htm (2668 words)

	Digital testing techniques for very high frequency phase-locked loops - Patent 5295079
		a frequency access read/write interface means providing access to said digital serial loop filter for reading a frequency difference between a local crystal and said high frequency input signal to said PLL, or micro-stepping a free-running frequency of a voltage-controlled oscillator or a frequency-controlled oscillator of said PLL.
		The PAP 28 reflects the low frequency output signals of the PFC 16 in digital format, which determines the phase settings of the high frequency output of the FCO 18.
		To measure frequency acquisition time, the digital tester 4 polls the FAP 26 register until the delta frequency between the input data and local clock becomes stable, indicating that the PLL is acquiring frequency locking.
	www.freepatentsonline.com /5295079.html (5115 words)

	very - Search Results - MSN Encarta
		The Very pistol, for example, invented by the American naval officer...
		Very was a Massachusetts poet who produced strikingly...
		Very High Frequency, usually abbreviated VHF, band of radio-signal frequencies, ranging from about 30 megahertz (MHz) to 300 Mhz, with corresponding...
	ca.encarta.msn.com /very.html (168 words)

	Highbeam Encyclopedia - Search Results for very (Site not responding. Last check: )
		very high frequency (VHF) Range or band of radio waves with frequencies between 30 and 300MHz and wavelengths between one and 10m (3–33ft).
		New Year's Resolutions Very Likely to Be Ignored; Rediscovering the Power of the Purse; Never Too Soon to Turn Up the Heat; Spooks Weigh In With Doom and Gloom; PHOTO OP: 11:00 a.m., February 1, Capitol Hill.(senators plans against George W. Bush's Iraq plans)(Democrats against Iraq war)(Democratic National Committee's research on presidential candidates)
		Casting a 'Spell': A group of (very excited) unknowns may be just the ticket for the quirky `Putnam County Spelling Bee'.
	www.encyclopedia.com /SearchResults.aspx?Q=very (708 words)

	Very High Frequency Radiation makes Dark Matter Visible \| Huliq: Breaking News
		For example, only the very largest lumps of matter (the biggest clusters of galaxies) can be spotted in such maps with any confidence.
		A second problem is that many of the distant galaxies whose distortion is measured lie in front of many of the mass lumps which one would like to map, and so are unaffected by their gravity.
		One of the most advanced is the Low Frequency Array (LOFAR) in the Netherlands, a project in which the Max Planck Institute for Astrophysics is planning to take a significant role, together with a number of other German institutions.
	www.huliq.com /1776/very-high-frequency-radiation-makes-dark-matter-visible (915 words)

	MILO
		In their designs for line arrays, most manufacturers recognize that the high frequency vertical pattern of each loudspeaker must be tightly controlled to minimize interference between units in the array.
		REM is a proprietary coupling device that introduces driver output to the horn throat across a very short path (3 inches for the mid-high section and 1.5 inches for the very-high section), effectively controlling the output but with dramatically reduced distortion in comparison to other techniques.
		Because high frequency drivers are critical to overall system performance, all compression drivers in MILO are designed and manufactured in house by Meyer Sound.
	www.meyersound.com /milo/precision.htm (291 words)

	Radio frequency spectrum
		Above 300 GHz, the absorption of electromagnetic radiation by Earth's atmosphere is so great that the atmosphere is effectively opaque to higher frequencies of electromagnetic radiation, until the atmosphere becomes transparent again in the so-called infrared and optical window frequency ranges.
		The SHF and EHF bands are often considered to be not part of the radio spectrum and form their own microwave spectrum.
		Frequencies from 216 to 450 MHz were sometimes called P-band: Previous, since early British Radar used this band but later switched to higher frequencies.
	faculty.cs.tamu.edu /lively/GE_rf/radio_frequency_spectrum.htm (390 words)

	What is high-frequency DC?
		Such current can vary in an infinite number of ways and still be DC as long as current flow in held to a single direction within the electrical circuit.
		In the ZENA welding system the high frequency current transitions / variations occur at least 18,000 times per second, and will typically exceed 21,000 times per second.
		HFDC creates electrical agitation of the welding puddle (you will hear a high pitched whistling/whining tone coming from within the puddle while you are welding).
	www.zena.net /htdocs/FAQ/whatisHFDC.shtml (529 words)

	Frequency Chart
		On the other hand, these frequencies are where you're most likely to experience problems with vocal resonance.
		High output in this region is fairly common in rock music as it gives it a hard edge that suites the genre.
		A good rule of thumb would be to reduce the peak so that it is about as high as the other undulations on the spectrum.
	www.har-bal.com /frequency.php (492 words)

	About Sonic Relief Ultrasound
		If too high a power output is used and an ultrasound unit is left sitting still on the body, it is possible to burn the tissue beneath the skin.
		High power units are typically used with large applicator heads to do larger parts of the body.
		This is a very common procedure used by massage therapists and chiropractors for tension headache sufferers.
	www.aidyourpain.ca /ultrasound.php (2463 words)

	Very High Frequency (Site not responding. Last check: )
		One important characteristics of this spectrum is that they are not readily reflected by the ionosphere limiting their range of communication to the line of sight (the same reason restricting the range of coverage of transmission from a TV transmission tower).
		Very High Frequencies provide the most reliable short distance line-of-sight radio communication which is free from the control of other atmoshpheric effects.
		Ham radio operators are alloted the frequencies ranging from 144 MHz to 148 MHz (in India it is 144 to 146 MHz) and a limited frequencies in the 50 MHz range.
	www.qsl.net /vu2msy/VHF.htm (205 words)

	Very High Frequency Modes
		When the added harmonic's frequency is a very high multiple of the main driving frequency it is seen that the bubble still responds to relative phase changes between both driving components (FIG.
		With increasing order of the added harmonic a change in response is seen: the phase interval during which the position changes shrinks at high frequency.
		This may be attributed to the increased interaction of the harmonic with the afterbounce frequency which is almost equal to the linear resonance frequency of the
	www.physik.tu-darmstadt.de /~hofu/paper/micro/node7.html (174 words)

	Ultra high frequency / very high frequency (uhf/vhf) band enhancement invention
		The analog front end transceivers may be a stand-alone Radio Frequency (RF) integrated analog circuit, or alternatively, be embedded with a processor 50 as a mixed-mode integrated circuit.
		The UHF/VHF component handled by transceiver 42 carries the streaming high definition video content while the MIMO component handled by transceivers 12 and 22 are reserved for data and other applications.
		It is, therefore, to be understood that the appended claims are intended to cover all such modifications and changes as fall within the true spirit of the invention.
	www.freshpatents.com /Ultra-high-frequency---very-high-frequency--uhf-vhf--band-enhancement-dt20061012ptan20060229029.php (2111 words)

	Very-High-Frequency TCVCXOs ±1.5ppm accuracy at 622MHz and above
		Jitter performance is less than 3ps rms from 10Hz to 80MHz by avoiding the use of a phase-locked loop in favour of a low-phase-noise high-frequency fundamental crystal and harmonic multiplication.
		Frequency stability over the 0º to +80ºC temperature range is kept to ±1.5ppm.
		Frequency adjustment of up to ±60 ppm is available through external voltage control.
	www.epn-online.com /page/29044/very-high-frequency-tcvcxos--1-5ppm-accuracy-at-622mhz-and-above.html (194 words)

	very - Definitions from Dictionary.com
		Very does not modify past participles that are clearly verbal; for example, The lid was very sealed is not an idiomatic construction, while The lid was very tightly sealed is. Sometimes confusion arises over whether a given past participle is adjectival and thus able to be modified by very without an intervening adverb.
		However, when past participle forms are used as adjectives, modification by a bare very, or by analogous adverbs such as quite, is acceptable: there can be no objection to phrases such as a very creased handkerchief, a very celebrated singer, or a very polished performance.
		Example: The very first thing you must do is ring the police; She has a car of her very own.
	dictionary.reference.com /browse/very (953 words)

	National Institute of Justice - Radio Spectrum (Site not responding. Last check: )
		Frequency is measured in the unit hertz (Hz), referring to a number of cycles per second.
		Most agencies do not have access to this band until their regional frequency plans are approved by the FCC, and after local TV broadcasters relinquish these frequencies to Public Safety in 2009.
		To avoid interference between systems using the same or adjacent frequencies, the FCC ensures that a channel is licensed to only one user in a given area.
	www.ojp.usdoj.gov /nij/topics/commtech/radiospectrum/welcome.html (895 words)

	Very-High-Frequency and Above Communications
		Several frequencies are usually assigned for each circuit.
		Frequencies above 30 megahertz are not normally refracted by the atmosphere and ground-wave
		Frequencies at the lower end of this band are capable of overcoming the shielding effects of
	www.tpub.com /content/neets/14189/css/14189_28.htm (475 words)

	MAEL-GPS/Amateur Radio - Glossary (Site not responding. Last check: )
		A means of adding voice or data to a radio frequency transmission by varying the amplitude of the carrier frequency.
		Each Amateur Radio station is assigned a call sign by the government of that country which allows the operator to transmit in the amateur radio bands.
		The frequency of the transmission is described in terms of the number of cycles per second or Hertz (Hz).
	www.lerc.nasa.gov /WWW/MAEL/ag/gloss.htm (626 words)

	Radiology Today - Imaging the Eye With Very-High-Frequency Ultrasound
		But the tradeoff at such high frequency is that sound waves don’t penetrate far into the tissue, which limits which parts of the body can be effectively imaged.
		Until the mid-1990s, the typical frequency for ophthalmic ultrasound procedures was approximately 10 megahertz (which, as noted, other specialties would consider very high to begin with).
		To enhance the ultrasonic backscatter from the very small blood volume in small arterioles and capillaries, some tests employed a contrast agent consisting of a high-molecular-weight gas encapsulated in a lipid shell, ranging in diameter from 1 micron to 3 microns (red blood cells measure approximately 8 microns).
	www.radiologytoday.net /archive/rt_091304p10.shtml (1978 words)

	Citations: Tail Index and Quantile Estimation with Very High Frequency Data - Danielsson, de Vries (ResearchIndex)
		For a typical large portfolio (in terms of number of assets) the conditional approach mayalso just not be feasible since this requires constructing and updating huge conditional variance covariance matrices.
		Danielsson, J., and C. de Vries (1997b): \Tail index and quantile estimation with very high frequency data," Journal of Empirical Finance, 4, 241-257.
		Danielsson, J., and C. de Vries (1997a): \Tail index and quantile estimation with very high frequency data," Journal of Empirical Finance, 4, 241-257.
	citeseer.ist.psu.edu /context/920626/0 (898 words)

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