An Industry White Paper: HD Radio By Renee Cassis‚ VP‚ RAB Corporate Marketing Radio For the 21st Century HD Radio™ is a new technology that enables AM and FM Radio stations to broadcast their programs digitally‚ a tremendous technological leap from today’s familiar analog broadcasts. These digital broadcasts provide listeners with radically improved audio quality and reception and new data services. Signal fading‚ static‚ hisses‚ and pops are a thing of the past. Data services such as displayed
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Radio-controlled car Radio-controlled (or R/C) cars are usually categorized as either "toy" or "hobby" grade. Remote control vehicles are usually of one of two types: control of a vehicle by radio transmission or by a wire connecting between the transmitter and car. This article focuses on the radio-controlled vehicle category‚ both toy and hobby grades.Cars are powered by various sources. Electric cars are powered by small but powerful electric motors and rechargeable nickel-cadmium‚ nickel metal
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Radio waves for Communication Radio waves are electromagnetic waves with wavelengths larger than the infrared light. Like all other electromagnetic waves‚ they travel at the speed of light. The wavelengths can vary from the size of a football field to the size of a football. They can be produced naturally by large stars and by lightning. Man-made radio waves are used for transmitting signals and currents. Specific Properties of Radio Frequency (RF) Current Radio frequency is the frequency of radio
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Radio Movie Analysis Autism is generally accepted that it is caused by abnormalities in the brain structure or function. In many families‚ there appears to be a pattern of autism or related disabilities supporting the theory that autism has a genetic basis. Some of the characteristics of an autistic child are‚ does not babble or coo by 12 months‚ does not gesture or say a single word much less can speak two word phrases by 12-24 months of age as the child grows he or she may have difficulties
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Radio One Radio One Inc. was founded by Catherine Hughes in 1980. Radio One was the largest radio group targeted to African Americans. They had remarkable success by purchasing underperforming stations and went from only 7 stations in 95 to 28 in 99. In 1980‚ Hughes and her husband raised enough money to purchase WOL-AM in Washington‚ D.C. for just under one million dollars. This increased their credibility. Radio One’s strategy was to provide urban-oriented entertainment‚ with information easily
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US ARMY SIGNAL CENTER AND FORT GORDON PRINCIPLES OF RADIO WAVE PROPAGATION (SC:25C) EDITION DATE: FEBRUARY 2005 PRINCIPLES OF RADIO WAVE PROPAGATION Subcourse Number SS0130 EDITION B United States Army Signal Center and Fort Gordon Fort Gordon‚ Georgia 30905-5000 10 Credit Hours Edition Date: February 2005 SUBCOURSE OVERVIEW This subcourse is designed to teach the principles of radio wave propagation. The prerequisite for this subcourse is that
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to Software Defined Radios A. History B. Definition C. Basic Components II. Operating Principles of SDRs A. Ideal concept B. SDR Receiver Architecture a) Superheterodyne Receiver b) Digital Down Conversion C. SDR Transmitter Architecture a) Digital Up Conversion III. Common SDR Implementations IV. SDR Software V. Advantages and Trade-Offs in using SDRs A. Performance Parameters VI. Current Usage VII. SDRs of the Future References: l Software-defined radio‚ Wikipedia‚ the free
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723SQN (AAFC) RADIO COMMUNICATIONS ELECTIVE EXAMINATION ANSWERS /34 1. What does the mnemonic ’SAD’ mean? (3) S - Security A- Accuracy D- Discipline 2. What is a PROWORD and why are they used in radio communications? (2) Are words or pharses which have specific meanings to increase efficiency of transmissions
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The Roaring 20’s During the 1920’s‚ also known as "The Roaring 20’s"‚ Radio Broadcasting became one of America’s favorite sources of entertainment. During this time period most Americans depended on radio for their source of communication‚ since television was not yet invented. The invention of radio had a major impact on Americans. Radio stations transmitted a variety of shows and programs that entertained many people through out the nation. "In the 1920’s the Westinghouse engineer‚ Frank Conrad
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Guess Paper – 2013 Class – IX Subject – ENGLISH LANGUAGE ___________________________________________________________________________ • Answers to this Paper must be written on the paper provided separately. • You will not be allowed to write during the first 15 minutes. • This time is to be spent in reading the question paper. • The time given at the head of this Paper is the time allowed for writing the answers. • Attempt all four questions. • The intended marks for questions or parts of
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