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Design, Construction and Testing of a Low Energy Digital Frequency Modulation (FM) Transmitter
International Journal of Scientific & Engineering Research Volume 11, Issue 1, January-2020 534 ISSN 2229-5518 Design, Construction and Testing of a Low Energy Digital Frequency Modulation (FM) Transmitter JP. C. Mbagwu, F.M.Ezike, J.O.Ozuomba Abstract---- A rapidly growing demand for the use of Frequency Modulation (FM) transmitter exists within institutions and individuals. The FM transmitters are however a complex equipment demanding high power supply, high voltage system design, critical maintenance and exorbitant price. These problems of the transmitter constitute major impediments to institutions and individuals that may wish to adopt radio broadcast as means of electronic media. This study was therefore carried out to design and construct an FM transmitter that is of low cost, and simple in maintenance, efficient in use and yet operating on low power supply. The FM transmitter is designed to be received at a range of about 100metres in free air. The transmitter has a capacitor microphone which picks up very weak sound signals, a transistor, resistors, inductor, and capacitors. The design procedure involves the modification of an output of the transmitter. Based on the procedures adopted and the tests carried out, the specific findings include a range of 102.2MHz of transmission from a 9V DC battery. The work indicated that the practical frequency modulated (FM) transmitter requiring a low power can be designed and constructed. Index Terms----Frequency Modulation, FM Transmitter, Radio Broadcast, Antenna. 1.0 INTRODUCTION combined in one unit are called a transceiver. The In electronics and telecommunication, a transmitter term transmitter is often abbreviated ‘‘XMTR’’ or or radio transmitter is an electronic device which ‘‘TX’’ in technical documents. -
Electrical Engineering (ELEC ENG) 1
Electrical Engineering (ELEC_ENG) 1 Prerequisite: ELEC_ENG 302-0 or equivalent. ELECTRICAL ENGINEERING ELEC_ENG 334-0 Fundamentals of Blockchains and Decentralization (1 Unit) (ELEC_ENG) This course is partly an introduction to the fundamentals of blockchains and decentralized applications and partly a springboard toward ELEC_ENG 302-0 Probabilistic Systems (1 Unit) deeper understanding and further exploration. The course explains Introduction to probability theory and its applications. Axioms of how blockchains work; teaches the underlying fundamentals of probability, distributions, discrete and continuous random variables, distributed consensus; provides hands-on experience through computer conditional and joint distributions, correlation, limit laws, connection assignments; and also touches upon economic and policy issues. to statistics, and applications in engineering systems. May not receive Prerequisites: COMP_SCI 212-0 or ELEC_ENG 302-0 or equivalent or credit for both ELEC_ENG 302-0 and any of the following: IEMS 202-0; graduate standing and basic programming skills. MATH 310-1; STAT 320-1; ELEC_ENG 383-0, ELEC_ENG 385-0. Corequisite: MATH 228-2 or equivalent. ELEC_ENG 353-0 Digital Microelectronics (1 Unit) Logic families, comparators, A/D and D/A converters, combinational ELEC_ENG 307-0 Communications Systems (1 Unit) systems, sequential systems, solid-state memory, largescale integrated Analysis of analog and digital communications systems, including circuits, and design of electronic systems. modulation, transmission, and demodulation of AM, FM, and TV systems. Prerequisites: COMP_ENG 203-0, ELEC_ENG 225-0. Design issues, channel distortion and loss, bandwidth limitations, additive noise. ELEC_ENG 359-0 Digital Signal Processing (1 Unit) Prerequisites: ELEC_ENG 222-0, ELEC_ENG 302-0 or equivalent. Discrete-time signals and systems. -
The Influence of the Mass Media in the Behavior Students: a Literature Study
International Journal of Academic Research in Business and Social Sciences 2017, Vol. 7, No. 8 ISSN: 2222-6990 The Influence of the Mass Media in the Behavior Students: A Literature Study Noradilah Abdul Wahab1, Mohd Shahril Othman2, Najmi Muhammad3 1 Universiti Sultan Zainal Abidin (UniSZA), Kampus Gong Badak. Kuala Terengganu 2 Lecturer, Faculty of Islamic Contemporary Studies, Universiti Sultan Zainal Abidin (UniSZA) 3 Universiti Malaysia Perlis (UniMAP), Arau, Perlis. DOI: 10.6007/IJARBSS/v7-i8/3218 URL: http://dx.doi.org/10.6007/IJARBSS/v7-i8/3218 Abstract The highly developed and complex of technology has grown up along the current style of the world which had introduces the human to a wide range of communication tools, as well as communications today. Mass media is a means of conveying information simultaneously and accessible to the community all over the world. In present era of globalization, the modernization make it easier for people to carry out their daily lives. However, this sophistication has both positive and negative to the user. The mistake in using this facility will become a threat that can contribute the social problems in society. The objective of this writing is to see the influence of mass media in the formation of student personality. The method of writing is qualitative based on previous studies and research through documents, journals and books related to the discussion of the influence of mass media. The method of literature is the primary basis in this writing that inductively and deductively analyzes by studying literature from both local and western researchers until a strong conclusion in identifying mass media influences on student behavior can be achieved. -
The Great Telecom Meltdown for a Listing of Recent Titles in the Artech House Telecommunications Library, Turn to the Back of This Book
The Great Telecom Meltdown For a listing of recent titles in the Artech House Telecommunications Library, turn to the back of this book. The Great Telecom Meltdown Fred R. Goldstein a r techhouse. com Library of Congress Cataloging-in-Publication Data A catalog record for this book is available from the U.S. Library of Congress. British Library Cataloguing in Publication Data Goldstein, Fred R. The great telecom meltdown.—(Artech House telecommunications Library) 1. Telecommunication—History 2. Telecommunciation—Technological innovations— History 3. Telecommunication—Finance—History I. Title 384’.09 ISBN 1-58053-939-4 Cover design by Leslie Genser © 2005 ARTECH HOUSE, INC. 685 Canton Street Norwood, MA 02062 All rights reserved. Printed and bound in the United States of America. No part of this book may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying, recording, or by any information storage and retrieval system, without permission in writing from the publisher. All terms mentioned in this book that are known to be trademarks or service marks have been appropriately capitalized. Artech House cannot attest to the accuracy of this information. Use of a term in this book should not be regarded as affecting the validity of any trademark or service mark. International Standard Book Number: 1-58053-939-4 10987654321 Contents ix Hybrid Fiber-Coax (HFC) Gave Cable Providers an Advantage on “Triple Play” 122 RBOCs Took the Threat Seriously 123 Hybrid Fiber-Coax Is Developed 123 Cable Modems -
Warren Commission, Volume XXII: CE 1407
UNITED STATES DEPARTMENT OF JUSTICE FEDERAL BUREAU OF INVESTIGATION r,R.Frr.PL.. .Rd* . Dallas, Texas Ree ASSASSINATION OF PRESIDENT' F~ N. June 5, 1964 JOHN FITZGERALD KENNEDY, NOVPMEFR 22, 1963, D&LIAr, TEXAS ASSASSINATION OF PRESIDENT On June 2,' 1964, JAMES W. ALTGENS . 6441 Pemberton JOHN FITZGERALD KENNEDY, Drive, telephone number EMerson 8-7766, Dallas, Texas, advised NOVEMBER 22, 1963, DALLAS, TEXAS he is employed as a wirephoto operator - photographer by Associated Press, Room 353, Dallas News Building, Dallas, In the May 24, 1964, issue of the "New York Herald Texas . ALTGENS said he sometimes acts in the capacity of the Tribune", Magazine Section, there appeared an article by DOM News Photo Editor . He said he has been employed by the BONAFEDE captioned "The Picture With a Life Of Its Own ." Associated Press for 26 years . ALTGENS advised he was born This article refers to the controversial Associated Press April 28, 1919, at Dallas, Texas . photograph of the Presidential motorcade wherein an individual resembling LEE HARVEY OSWLD appears in the doorway of the ALTGENS advised that on November 22, 1963, he was Texas School Book Depository . Previous investigation has assigned by Associated Press to take up a position along the identified this individual as BILLY NOLAN LOVELADY . This motorcade route for the purpose of obtaining pictures of the article reflects that J . W . ALTGENS, a veteran Associated President and the Presidential motorcade . ALTGENS related he Press photographer in Dallas, Texas, recalled shooting the left his office at 11 :15 A .M . and proceeded to the triple picture . The article further cemented that ALTGENS had never overpass above Elm and Main Streets where he intended to take been questioned by the FBI . -
Rtv 3001 Introduction to Telecommunication Section 4324
RTV 3001 INTRODUCTION TO TELECOMMUNICATION SECTION 4324 IMPORTANT INFORMATION: Instructor: William A. Renkus, Ph. D. Lecture: Tuesday, Period 10 (5:10 pm – 6:00 pm) & Thursday, Periods 10 - 11 (5:10 pm 7:05 pm)) Room: TUR L007 Office: 3065 Weimer (subject to change) Office Hours: Wednesday & Friday 1:45 PM – 2:45 PM & by appointment E-mail: [email protected] E-Learning: http://lss.at.ufl.edu/ COURSE DESCRIPTION: Electronic media encompass all contemporary paths of mass communication into our lives: radio, television, cable, satellite and the Internet. This course investigates their dynamic influence by unveiling principles that govern media channels of information and entertainment. The goal for students is to understand how our media tools were created, were nurtured into an information industry, and now shape our lives in political, economic, and social ways. We will critically analyze the latest developments from the standpoints of media owners, advertisers, managers, producers, and audiences. COURSE OBJECTIVES: Students will gain knowledge of the telecommunication industry with an emphasis on learning specifically about broadcasting and cable. In addition, changes in new media, business practices, converging markets, and regulatory philosophies will be addressed. This course is designed to offer you an overview of the origins, organizations, and movements that have shaped electronic media. We will learn and discuss the following developments: The historical development of electronic media The technologies involved in the creation of electronic media The structure, economics, and regulation of electronic media The political and legal issues involved in content and management decisions The economics of electronic media, including programming and ratings The lexicon involved within subsets of the telecommunication industry REQUIRED TEXTBOOK: Joseph R. -
Broad&Elec Media.Vp
REQUIREMENTS FOR THE BACHELOR OF ARTS IN JOURNALISM GAYLORD COLLEGE OF JOURNALISM AND MASS COMMUNICATION THE UNIVERSITY OF OKLAHOMA Minimum Credit Hours and Grade Averages Required For Students Entering the Credit Hours: Journalism & Mass Oklahoma State System Total - 130 Upper-Division Within Total - 48 Communication— for Higher Education: Major - 33 Upper-Division Within Major -27 Broadcasting & Electronic Summer 2002 Grade Point Averages: Media— 0603G through Overall: Combined OU/Transfer - 2.25 OU - 2.00 Last 60 Hours - 2.25 Bachelor of Arts Spring 2003 Major: Combined OU/Transfer - 2.25 OU - 2.00 in Journalism GENERAL EDUCATION AND COLLEGE REQUIREMENTS MAJOR REQUIREMENTS Hours MAJOR REQUIREMENTS - Hours Courses graded S/U or P/NP will not apply. continued Courses for fulfillment of General Education and College of Journalism requirements JOURNALISM & MASS COMMUNICATION Requirements for admission to the Gaylord College must be from the approved General Education course list. of Journalism and Mass Communication are University-Wide General Education Requirements 1013 Intro. to Mass Communication 3 outlined on the back of this page. (minimum 40 hours) 2033 Writing for Mass Media 3 A maximum of 40 hours of Journalism and Mass Core Area I: Symbolic and Oral Communication (9-19 hours, 3-5 courses) Communication may be counted in the 130 hours a: English Composition (6 hours, 2 courses) 3622 Writing for Broadcast 2 required for graduation. No student will be awarded 1. English 1113, Principles of English Composition a BA in Journalism degree without completing at 2. English 1213, Principles of English Composition 3632 Audio Production 2 least 90 semester credit hours outside the College. -
The Big Picture: HDTV and High-Resolution Systems (Part 6 Of
Chapter 4 TV and HRS Technologies INTRODUCTION picture on the TV screen by scanning electron beams (one for each primary color) across the picture tube As an entertainment medium, HDTV is not and varying their intensity in exact synchronism revolutionary. It is simply another step in the with the original picture signal. ongoing evolution of television that began with black and white (B&W) TV in the 1940s and will The 1950s technologies used today to bring color continue into the future with as yet undreamed of TV pictures to the home have a variety of shortcom- technologies. Each successive generation of TV ings and imperfections that modern systems can technology attempts to provide a more realistic correct. TV production formats, established in the picture and sound within the constraints of low-cost, 1930s and 40s, were originally based on 35-mm easy-to-use consumer technology. motion picture film. This gave today’s TV picture its Here we describe conventional NTSC1 television, nearly square shape (or aspect ratio) of 4 units wide Advanced Television (ATV) systems, and some of by 3 high (4:3). Research has found, however, a their underlying technologies (box 4-l). The conver- strong viewer preference for screens 5 to 6 units gence of ATVS, computer and telecommunications wide by 3 units high—as seen in today’s theatres— equipment toward High Resolution Systems (HRS) that correspond to the human field of vision.4 is discussed later. The original motion picture standard was 16 CONVENTIONAL TELEVISION: pictures per second—manually cranked cameras could go no faster.5 At that rate the viewer saw a PRODUCTION, TRANSMISSION, significant ‘flicker’ in the picture displayed (hence AND RECEPTION the term, the ‘flicks’ ‘).6 In developing TV transmis- Television systems involve three distinct activi- sion standards, engineers sought a system that sent ties: l)production, 2) transmission, and 3) display of pictures often enough that viewers did not see them the TV program. -
Game On: an Analysis of the Video Game Console Industry
Of Hedgehogs and Plumbers: An Investigation of Marketing Strategies in the American Home Console Industry By: Daniel DeMaiolo Michael G. Pontikos ADVER 3711 Marketing Communications Research April 23, 2008 Daniel DeMaiolo Michael G. Pontikos ADVER 3711 23 April 2008 Of Hedgehogs and Plumbers: An Investigation of Marketing Strategies in the American Home Console Industry From rescuing damsels in distress locked away in castles, slaying foul monsters in mythic lands, zooming through loop-de-loops in bizarre environments to realistic simulations of everyday life, the American video game home console industry emerges vibrant as ever. Even more interesting is the ability of such tiny pixels and sound bits to capture American minds and wallets. Through examination of the origin of the industry and the subsequent targeting, pricing, and positioning strategies, a portrait of the lucrative home video game console industry emerges. Although many of the major home console manufacturers over the years share a similar goal of selling home consoles to consumers, most of the corporations began in a completely different industry long before the birth of the gaming business and the subsequent console wars. To illustrate, Nintendo Co., Ltd. initially manufactured playing cards in 1889 “called ‘Hanafuda’ [which were] tenderly hand crafted using the bark from the mulberry and mitsu-mata trees” and later expanded to “love hotels” and “instant rice” (N-Sider Media, “Nintendo”). In addition, Sega Corporation, formerly known as Honolulu-based Standard Games in 1940, “began importing jukeboxes to supply American military bases in Japan…[and] eventually expanded into amusement game imports [with the slogan] ‘service and games’ ” from which their name is taken (Pollack, “Sega”). -
Laser Wirephoto System
Wireless World, June 1974 183 Laser wirephoto system A report on the design and development of a wirephoto transceiver to be used by Associated Press news agency As part of the trend towards more efficient usage of telephone links, telephone companies are encouraging a changeover from high quality analogue lines to digital links. Professor W. Schreiber of Massachusetts Institute of Technology has developed a wirephoto transmitter- receiver and digital picture processor which meets this requirement. A method of transmitting colour pictures Of the types of photosensitive papers modulation. Processing to a digital form is over telephone lines has been recently available, dry silver paper seemed to be accomplished by a separate analogue-to- described in Wireless World.' However, most suited since it was capable of pro- digital converter contained within a signal although the processing of colour pictures ducing pictures of the desired quality and processing computer to be described later. was novel, the basic mechanism of the uses a very simple heat treatment for Better resolution and higher scanning transmitter; receiver and the continuing use picture development. The scanner/writer speeds are possible where other appli- of analogue signals over the telephone selected was a low -power helium -neon cations are considered. link were fairly conventional. The limita- laser, for the basic reason that it was Since the tone scale of the output pic- tions of such techniques are becoming reliable, cheap and, since it could be ture was considered to be the most impor- more obvious with time since the necessary directly modulated, eliminated the need tant single aspect of picture quality, control high quality audio links (800Hz to 18kHz for a separate modulator. -
Technology, Media and Telecommunications Review
Telecommunications Review Telecommunications the Technology, Media and and Media Technology, Technology, Media and Telecommunications Review Eleventh Edition Editor Matthew T Murchison Eleventh Edition lawreviews © 2020 Law Business Research Ltd Technology, Media and Telecommunications Review Eleventh Edition Reproduced with permission from Law Business Research Ltd This article was first published in December 2020 For further information please contact [email protected] Editor Matthew T Murchison lawreviews © 2020 Law Business Research Ltd PUBLISHER Tom Barnes SENIOR BUSINESS DEVELOPMENT MANAGER Nick Barette BUSINESS DEVELOPMENT MANAGER Joel Woods SENIOR ACCOUNT MANAGERS Pere Aspinall, Jack Bagnall ACCOUNT MANAGERS Olivia Budd, Katie Hodgetts, Reece Whelan PRODUCT MARKETING EXECUTIVE Rebecca Mogridge RESEARCH LEAD Kieran Hansen EDITORIAL COORDINATOR Gavin Jordan PRODUCTION AND OPERATIONS DIRECTOR Adam Myers PRODUCTION EDITOR Anna Andreoli SUBEDITOR Martin Roach CHIEF EXECUTIVE OFFICER Nick Brailey Published in the United Kingdom by Law Business Research Ltd, London Meridian House, 34–35 Farringdon Street, London, EC4A 4HL, UK © 2020 Law Business Research Ltd www.TheLawReviews.co.uk No photocopying: copyright licences do not apply. The information provided in this publication is general and may not apply in a specific situation, nor does it necessarily represent the views of authors’ firms or their clients. Legal advice should always be sought before taking any legal action based on the information provided. The publishers -
The Failure of Fax: When a Vision Is Not Enough
The Failure of Fax: When a Vision Is Not Enough Jonathan Coopersmith TexasA&M University In the lastdecade, fax machineshave revolutionized communications. We have becomeused to and dependentupon instantaneousinformation. Many peoplecannot conceive how theyworked without a fax machine.The question, however,arises: If the conceptis so good,why did nearlya centuryand a half elapsefrom the first patent in 1843 until rapid commercialdiffusion in the 1980s? In actuality,attempts to commercializefacsimile technology extend back to the 1860s[5]. Its promotersspanned the spectrumfrom individualinventors, suchas Thomas Edison and Arthur Korn, to massivecorporations, such as Xerox and AT&T. Their most common feature until the mid-1980s was failure. The few successesoccurred not in generalcommunications but in dedicatedniche marketsand, evenhere, failuresflourished. Perhaps the questionshould be: In view of the dismalhistory of failures,why did so manypeople and companies pressahead? What motivatedindividuals and ill-msto commitresources to createnew marketsand technology,given the dauntinghistory that lay behind them? Failure,the lack of technicaland commercial success for a productin the marketplace,is endemicto innovativetechnologies. Failure is worthyof study if only to betterunderstand success. Historians of businessand technology acceptthis, but tend to focusmore on success. This lack of coveragedistorts our knowledgeof the businessprocess because failure is an integral,if not dominant, theme in the existenceof companies. Much scholarlywriting