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Topic: Types of radio emissions

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	Types of radio emissions - Wikipedia, the free encyclopedia
		Each type of radio emission is classified according to its bandwidth, method of modulation, nature of the modulating signal, and type of information transmitted on the carrier signal.
		This designation system was agreed at the 1979 World Administrative Radio Conference (WARC 79), and gave rise to the Radio Regulations that came into force on 1st January 1982.
		The bandwidth is expressed as three digits and a letter that occupies the position normally used for a decimal point.
	en.wikipedia.org /wiki/Types_of_radio_emissions (408 words)

	Radio (Site not responding. Last check: 2007-11-01)
		Radio waves are a form of electromagnetic radiation, and are created whenever a charged object accelerates with a frequency that lies in the radio frequency (RF) portion of the electromagnetic spectrum.
		Radio was used to transmit pictures visible as television as early as the 1920s.
		Radio remote control: Use of radio waves to transmit control data to a remote object as in some early forms of guided missile, some early TV remotes and a range of model boats, cars and aeroplanes.
	www.gogoglo.com /wiki/en/wikipedia/r/ra/radio.html (3281 words)

	Radio (Site not responding. Last check: 2007-11-01)
		Radio is a technology that allows for the transmission of signals by modulation of electromagnetic waves.
		A radio wave is created whenever a charged object accelerates with a frequency that lies in the radio frequency (RF) portion of the electromagnetic spectrum.
		FM receivers are subject to the capture effect, which causes the radio to only receive the strongest signal when multiple signals appear on the same frequency.
	www.icyclopedia.com /encyclopedia/r/ra/radio.html (2685 words)

	Learn more about Radio in the online encyclopedia. (Site not responding. Last check: 2007-11-01)
		It was Heinrich Rudolf Hertz who, between 1886 and 1888, first validated Maxwell's theory through experiment, demonstrating that radio radiation had all the properties of waves (then called Hertzian waves), and discovering that the electromagnetic equations could be reformulated into a partial differential equation called the wave equation.
		Radio teletypess usually operate on short-wave (HF) and are much loved by the military because they create written information without a skilled operator.
		Amateur radio is an emergency and public-service radio service provided by enthusiasts who purchase or build their own equipment.
	www.onlineencyclopedia.org /r/ra/radio.html (2589 words)

	Radio (Site not responding. Last check: 2007-11-01)
		By contrast other types of emissions fall outside the RF range are gamma rays X-rays infrared and ultraviolet light and light visible to humans.
		Another effect is the shorter radio waves act more like travelling in straight lines that are not back towards the Earth by the ionosphere resulting in a shorter effective reception FM receivers are subject to the capture effect which causes the radio to only the strongest signal when multiple signals appear the same frequency.
		Radio remote control : Use of radio waves to transmit data to a remote object as in early forms of guided missile some early TV remotes and a of model boats cars and aeroplanes.
	www.freeglossary.com /Radio (3102 words)

	Category:Radio - Wikipedia, the free encyclopedia
		This category is for articles pertaining to radio as a broadcast medium.
		For other uses of radio waves in telecommunications, see the wireless communications category.
		Radio stations, programs and personalities, and other topics pertaining to radio broadcasting in a particular country, should be filed in the appropriate subcategories.
	en.wikipedia.org /wiki/Category:Radio (159 words)

	Radio (Site not responding. Last check: 2007-11-01)
		Radio was used to pass on orders and communications between armies and navies on both sides in World War I; Germany used radio communications for diplomatic messages once its submarine cables were cut by the British.
		Another use of radio in the pre-war years was the development of detecting and locating aircraft and ships by the use of radar (Radio Detecting and Ranging).
		Radio amateurs are able to use frequencies in a large number of narrow bands throughout the radio spectrum.
	www.freedownloadsoft.com /info/radio.html (3320 words)

	Polarization of Auroral Radio Emissions
		To determine the polarization of various radio emissions crossed loop antennas and associated electronics were installed at Churchill, Manitoba in March 1997.
		Auroral roar is the relatively narrowband (~200 kHz) emission at ~3 MHz beginning near 0448 UT and ending near 0453 UT. Horizontal dark bands are fixed-frequency transmissions; the band from 550-1600 kHz is the AM broadcast band.
		Deehr, Statistical and case studies of radio emissions observed near 2fce and 3fce in the auroral zone, J. Geophys.
	engineering.dartmouth.edu /spacescience/pol.html (1125 words)

	Radio - Gurupedia
		Radio waves travel (propagate) through the air and the vacuum of space equally well, not requiring a medium of transport.
		By contrast, other types of emissions which fall outside the RF range are gamma rays, X-rays, infrared and ultraviolet light, and light visible to humans.
		transistorized radio, small enough to fit in a vest pocket, and able to be powered by a small battery.
	www.gurupedia.com /r/ra/radio.htm (2962 words)

	Natural VLF Radio Emissions
		Lightning strikes are also known as "triggers"; most VLF radio emissions are the direct results from a single strike or a grouping of strikes over a certain period of time.
		Other sources of radio noise are beyond the atmosphere and into outer space.
		Sferics is from the shortened term atmospherics; the static interference (radio noise) received from a lightning strike or strikes.
	home.pon.net /785/natural.htm (658 words)

	S.O.N. \| Tracking The Perfect Storm \| Radiowaves
		The first burst occurred from 15:00 UT (Universal Time) to 15:12 UT. The second one occurred between 23:50 and 23:53 UT. These plots show fairly common types of radio emissions from the Sun.
		No one in the Radio Jove network recorded the second flare early on May 28th – probably because it was after sunset for most Radio Jove observers.
		The radio wave and x-ray emissions tell you that several flares did occur and two of them were very strong, X-class flares that produced coronal mass ejections.
	son.nasa.gov /tass/perfect/radiowaves.htm (781 words)

	Advanced PCB Resources : Radio
		Popov, who was the first to develop a practical communication system based on the coherer, is usually considered by his own countrymen to have been the inventor of radio.
		AM radio uses amplitude modulations, in which louder sounds at the microphone causes wider fluctuations in the transmitter power while the transmitter frequency remains unchanged.
		Information about many aspects of radio from the latest technologies to its historical foundations.
	www.advancedpcb.com /radio.html (3536 words)

	Radio Sun Introduction
		There is a dynamic sunspot group on the Sun today and it has been producing many moderate to strong radio bursts
		This Type V emission was one of the strongest so far.
		Possible Type V burst in the midst of a Coronal Mass Ejection.
	www.heliotown.com /Radio_Sun_Introduction.html (158 words)

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