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Topic: Microwave radio

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	Microwave - Wikipedia, the free encyclopedia
		A microwave oven uses a magnetron microwave generator to produce microwaves at a frequency of approximately 2.45 GHz for the purpose of cooking food.
		Microwaves are used in broadcasting transmissions because microwaves pass easily through the earth's atmosphere with less interference than longer wavelengths.
		Typically, microwaves are used in television news to transmit a signal from a remote location to a television station from a specially equipped van.
	en.wikipedia.org /wiki/Microwave (891 words)

	Learn more about Radio in the online encyclopedia. (Site not responding. Last check: 2007-10-29)
		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.
		Although the word 'radio' is used to describe this phenomenon, the transmissions which we know as television, radio, radar, and cell phone are all in the class of radio frequency emissions.
	www.onlineencyclopedia.org /r/ra/radio.html (2589 words)

	FDA/CFSAN: Kinetics of Microbial Inactivation for Alternative Food Processing Technologies -- Microwave and Radio ...
		Microwave and radio frequency heating refers to the use of electromagnetic waves of certain frequencies to generate heat in a material (Metaxas 1996; Metaxas and Meredith 1988; Roussy and Pearce 1995).
		The second major mechanism of heating with microwaves and radio frequency is through the oscillatory migration of ions in the food that generates heat under the influence of the oscillating electric field.
		Microwave and radio frequency heating for pasteurization and sterilization are preferred to the conventional heating for the primary reason that they are rapid and therefore require less time to come up to the desired process temperature.
	vm.cfsan.fda.gov /~comm/ift-micr.html (9206 words)

	VHF/UHF/Microwave Radio Propagation: A Primer for Digital Experimenters
		The focus is on acquiring a feel for radio propagation, and pointing the way towards recognizing the alternatives that may exist and the instances in which experimentation may be fruitful.
		Radio waves follow slightly curved paths in the atmosphere, but if there is a direct path between the antennas which doesn't pass through any obstacles, then we still have radio LOS.
		In a radio path consisting of a direct path plus a ground-reflected path, the path loss depends on the relative amplitude and phase relationship of the signals propagated by the two paths.
	www.tapr.org /ve3jf.dcc97.html (10080 words)

	Microwave Oven Radiations Hazards & Standards
		Microwave cooking is preferable to boiling to minimize the leaching of vitamins into the cooking water; in this regard it is similar to steaming.
		A positive feature of microwave ovens with regard to food safety is that food can be taken from the freezer, thawed quickly, cooked and served without it spending long periods of time in the danger temperature zone between 4°C and 60°C, which provides favorable conditions for the growth of dangerous micro-organisms.
		Microwave radiation is measured as power density in units of milliwatts per square centimetre (mW/cm²) which is essentially the rate of energy flow per unit area.
	www.lessemf.com /mw-stnds.html (9957 words)

	The Sun: Microwave and Radio Waves (Site not responding. Last check: 2007-10-29)
		Microwave and radio wave are the names given to light with wavelengths from about 1 millimeter (1 million nanometers) to more than 10 meters.
		Radio waves penetrate through the outer layers of solar gas, called the "chromosphere" and
		The depth to which the radio waves and microwaves can penetrate depends on their exact wavelength.
	solar.physics.montana.edu /YPOP/Spotlight/Today/microwave.html (201 words)

	ipedia.com: Plesiochronous Digital Hierarchy Article (Site not responding. Last check: 2007-10-29)
		The Plesiochronous Digital Hierarchy (PDH) is a technology used in telecommunications networks to transport large quantities of data over digital transport equipment such as fibre optic and microwave radio systems.
		The term plesiochronous is derived from Greek plesio, meaning near, and chronos, time, and refers to the fact that PDH networks run in a state where different parts of the network are almost, but not quite perfectly, synchronised.
		Recently, telecommunications companies have been replacing their PDH equipment with SDH equipment capable of much higher transmission rates.
	www.ipedia.com /plesiochronous_digital_hierarchy_1.html (624 words)

	Welcome to - Microwave Networks Inc
		Microwave Networks is ready to extend your core infrastructure investments, reduce costs, and simplify operations with our unique point-to-point microwave radio products.
		MNI is actively seeking worldwide partners to resell and/or represent our point-to point microwave radios.
		Microwave Networks has solutions for all your wireless communication needs.
	www.microwavenetworks.com (86 words)

	Radio Waves Microwave Antennas
		These antennas are designed for either portable or fixed point to point microwave applications requiring wide bandwidths, lightweight and low wind loading antennas.
		Radio Waves standard antennas are available in the following frequency: 1.5 through 50 GHz with varying gains and beam widths.
		Radio Waves has an extensive line of steerable antennas that feature a variety of functions and options from a Cosecant squared azimuth only reflector to a low profile offset parabola.
	www.antennasystems.com /radiowaves.html (546 words)

	Alphabetical List of Microwave Radio Vendors
		International supplier of spread spectrum radios, microwave radios, laser communications systems, fiber optic multiplexers, wireless LAN systems and RF components such as cable, connectors, antennas and amplifiers for wireless networking.
		Microwave RF path and propagation studies, fiber optic system design, two-way mobile radio design and studies, system integration and testing.
		We repair whole radios and modules, including solid state sources (repair and complete rebuild), frequency synthesizers, voltage controlled oscillators, dielectric resonator oscillators, crystal oscillators, power amplifiers, IF amplifiers, waveguide filters, phase modulators, demodulators, microwave switches, power supplies, TWT power supplies, DC/DC converters and the list goes on.
	www.jneuhaus.com /microwave/vendors.htm (2651 words)

	Radio Communication System,Microwave Radio Communication,Microwave Radio Communication System.
		The microwave radio communication system of PEL is integrated with advanced technology to enable continuous operation even in adverse situations.
		PEL, the renowned radio communication system manufacturer, has a proven expertise in providing optimal microwave radio communication system for easy compatibility and connectivity.
		DXR -200 Radio consists of seven types of plug-in-line modules which can be easily plugged in standard 19" subrack of DXR-200 Radio.
	www.pelindia.com /radio-communication-system.htm (447 words)

	TCM-930 Microwave Radio System: Telemetry-West (Site not responding. Last check: 2007-10-29)
		Building on a 30-year legacy of advanced, rugged, field-tunable and programmable microwave radio technology, the TCM-930 allows users to program modulation, user interfaces and frequencies — all within a compact, self-contained package that will operate in almost any environment on the face of the earth.
		Additionally, TCM-930 radio systems are available in most common carrier and military frequency bands and are fully tunable across each offered band to ensure unparalleled flexibility and reconfigurability.
		The radio terminal can be configured as a duplex transceiver, or as transmitter and receiver terminals for simplex operation.
	www.tw.l-3com.com /telemetry_west/news/tcm930.htm (560 words)

	ARRLWeb: UHF/Microwave Equipment and Components (Site not responding. Last check: 2007-10-29)
		Microwave Propagation in the Upper Troposphere (876,911 bytes, PDF file)
		Some designs are for research only.Advanced microwave and RF design skills will be required to build these circuits.
		This information was prepared as a membership service by the American Radio Relay League, Inc., Technical Information Service, 225 Main St., Newington, CT 06111 (860) 594-0214.
	www.arrl.org /tis/info/microwave.html (984 words)

	Radio and Microwave Installation for racerocks.com
		Susan and Grant from Telus hanging the radio dish on the antenna at the observatory
		The challenge of getting inflexible radio cable from the dish outside to the radio inside without compromizing the heritage structure was creatively solved by using existing electrical and ventillation openings.
		The radio and switch fit neatly in under the stair-ladder of the tower, completing this essential component for transmission of the signal from Race Rocks to Pedder Bay.
	www.racerocks.com /racerock/rrcom/towerantenna/radio/radio.htm (196 words)

	Radio Waves, Inc. - The Leader in Microwave Antenna Innovation (Site not responding. Last check: 2007-10-29)
		Radio Waves offers a diverse range of reliable and innovative microwave antennas.
		Microwave and broadband wireless antennas are available for Point-to-Point, unlicensed ISM, UNII, 802.11 Wi-Fi and 802.16 WiMax broadband wireless bands at 2.4, 3.5 and 5 GHz, LMDS, Point-to-Multipoint and broadcast microwave applications.
		Radio Waves is known globally for their rapid delivery and reliable microwave antenna designs.
	www.radiowavesinc.com (183 words)

	TESSCO Training Courses, Microwave, Cellular & Radio Fundamentals \| TESSCO 800 472 7373 (Site not responding. Last check: 2007-10-29)
		Modules include an overview of radio service as a transmission media, how transmitter and receivers work, modulation schemes used in cellular and PCS services, an overview of wave propagation and radio antenna systems.
		The 3-Day Microwave Fundamentals class is designed to provide the real life training required to maintain and operate point-to-point radio.
		Modules include an overview of radio service as a transmission media, how transmitters and receivers work, an overview of wave propagation and radio antenna systems.
	www.tessco.com /products/displaySkus.do?groupId=685&subgroupId=22 (794 words)

	Microwave : Manufacturers: Microwave
		Broadcast microwave services - Designs and manufactures a comprehensive line of microwave communications equipment for television broadcast, video, telemetry, and electronic surveillance applications.
		Massachusetts Microwave Corporation - Provider of point-to-point microwave radio system sales, service, and integration, employing refurbished name brand digital (DS1/E1, DS3/E3) and analog video radios.
		WaveSources - RF and microwave oscillators and synthesizers to 10 Ghz
	www.dxzone.com /catalog/Manufacturers/Microwave (549 words)

	Radio frequency & Microwave Meters
		Use it to check for cell phone activity, concealed bugging devices, RF microwave oven leakage, shielding performance, check the strength of RF remote control units for toys and models, science projects, etc. Small enough to hang on your keychain and so simple a child could use it.
		Most RF meters use a microwave diode detector as a basis of their detection system.
		Using both a needle type meter and audible tone, it detects: radio transmitters, geomagnetic storms, unusual magnetic solar activity, electrical activity of thunderstorms, leaky microwave ovens, magnetized rocks or bed frames, analog cellular phone EMF output, and concealed surveillance bugs.
	www.lessemf.com /rf.html (5262 words)

	Safety and Health Topics: Radiofrequency and Microwave Radiation
		Radiofrequency (RF) and microwave (MW) radiation are electromagnetic radiation in the frequency ranges 3 kilohertz (kHz) - 300 Megahertz (MHz), and 300 MHz - 300 gigahertz (GHz), respectively.
		Research continues on possible biological effects of exposure to RF/MW radiation from radios, cellular phones, the processing and cooking of foods, heat sealers, vinyl welders, high frequency welders, induction heaters, flow solder machines, communications transmitters, radar transmitters, ion implant equipment, microwave drying equipment, sputtering equipment and glue curing.
		Modulation occurs in a wide variety of forms specialized for radar, wireless communications, broadcast communications, and industrial processes.
	www.osha.gov /SLTC/radiofrequencyradiation (283 words)

	Microwave Working Group Home Page
		The next World Congress, currently in the initial planning stages, will be a collaboration between several international technical societies to bring a truly global meeting to the microwave and RF heating community.
		The meeting is scheduled for the fall of 2008 at a location to be decided in the near future.
		2005 Microwave Working Group, Ltd. - Contact: info1@microwave-rf.org
	www.microwave-rf.org (67 words)

	WA1MBA Amateur Radio Microwaves (Site not responding. Last check: 2007-10-29)
		Results of the VHF/UHF Contest Changes Questionaire are availble (Adobe Acrobat)
		A very brief introduction to microwaves Recently Updated
		Ham radio Millimeter Wave Bands Atmospheric Loss Charts
	www.wa1mba.org (106 words)

	Microwave
		Astra Microwave: circulators, receivers, mobile duplexers, GSM filters, GSM repeaters, RF components, antennas, combiners, multicouplers, amplifiers, oscillators
		Honeywell Advanced Microwave Components Manufacturer, RF Electronic Circuit Designs
		Microwave Amplifiers Limited, Top quality GaAs Fet amplifiers at sensible prices
	www.csun.edu /~vfeen0br/johnpage/micro.html (201 words)

	Bell System Long Lines Microwave Radio and Coaxial Cable - Site History
		7, 2005 21:52 - updated first transcontinental microwave route station list to include antenna structure types and heights for most stations, and to replace Hudson, CO with Watkins, CO.
		May 14, 2003 20:45 - revised Spring Grove, IL page to indicate original microwave equipment was type TE-1.
		May 30, 2002 22:21 - added Nov. 1951 Radio & Television News article to "First Transcontinental Microwave Route" section of Places and Routes page.
	long-lines.net /history.html (7907 words)

	Down East Microwave Inc. Supplier of amateur radio equipment for 50MHz and above
		Down East Microwave Inc. Supplier of amateur radio equipment for 50MHz and above
		We will be closed from Monday Nov. 21st and will be back at the office on Tuesday Nov.
		Retrofitting a RF power detection circuit for all DEM transverter and power amplifier
	www.downeastmicrowave.com (90 words)

	Microwave Radio Communications -- Analog and Digital Microwave Transmitters, Receivers, and Antennas (Site not responding. Last check: 2007-10-29)
		Microwave Radio Communications -- Analog and Digital Microwave Transmitters, Receivers, and Antennas
		Short Haul MicroLink III 18/23 GHz Broadcast Quality Video Microwave System MR-23CX 23 GHz Broadcast Quality Video Microwave System MR-23VX 21.2 - 23.6 GHz Video Microwave System MR-23VX-LAN Wireless 22 GHz Microwave Radio System for Wide Area Networks Government Radios
		MRC TSSR 15 GHz Tropo/Satellite Support Radio System TSSR DR-MUX 4T1/4E1 Digital Mult-rate Multiplexer Modem TSSR News The TSSR News provides updated information to the user community including field experiences, application information, problem solving, and new accessory products.
	www.cm-mrc.com (143 words)

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