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Author: H. Ward Silver
Publisher: American Radio Relay League (ARRL)
ISBN: 9780872593411
Category : Electronics
Languages : en
Pages : 0
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Book Description
Author: H. Ward Silver
Publisher: American Radio Relay League (ARRL)
ISBN: 9780872593411
Category : Electronics
Languages : en
Pages : 0
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Book Description
Author: Joseph J. Carr
Publisher: Newnes
ISBN: 9780750671613
Category : Education
Languages : en
Pages : 364
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Book Description
RF circuits; transmitters; receivers; antennas; troubleshooting.
Author: Rhey T. Snodgrass
Publisher:
ISBN:
Category : Radio
Languages : en
Pages : 122
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Book Description
Author: Joel R. Hallas
Publisher: American Radio Relay League (ARRL)
ISBN: 9780872599550
Category : Technology & Engineering
Languages : en
Pages : 0
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Book Description
Basic Radio reveals the key building blocks of radio: receivers; transmitters; antennas; propagation and their applications to telecommunications; radionavigation; and radiolocation. This book includes simple, build-it-yourself projects to turn theory into practice--helping reinforce key subject matter.
Author: P. A. Kinzie
Publisher:
ISBN: 9781794494107
Category :
Languages : en
Pages : 113
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Book Description
This book written by P. A. Kinzie chronicles the fascinating history and development of the crystal detector, including the reasons for its brief dominance of the radio market after the turn of the century. Starting with the discovery of solid-state rectification and then through the development of the crystal detector the reader learns about great inventors such as Pickard, Braun, Dunwoody, and others. Radio fundamentals such as antennas, ground, lightning protection, tuned circuits, and detection are covered for the beginner. The unending compromise between selectivity and sensitivity is discussed for the crystal set designer. Advanced topics such as the use of multi-tuned circuits and wave traps follow for the more experienced experimenter.The crystal set embodies many of the basic concepts upon which modern radio electronics is based. By grasping these basics in their rarest form, the crystal set, the reader can build a powerful foundation for additional learning.
Author: Hannu Karttunen
Publisher: Springer Science & Business Media
ISBN: 3662053330
Category : Science
Languages : en
Pages : 469
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Book Description
Fundamental Astronomy is a well-balanced, comprehensive introduction to classical and modern astronomy. While emphasizing both the astronomical concepts and the underlying physical principles, the text provides a sound basis for more profound studies in the astronomical sciences. This is the fifth edition of the successful undergraduate textbook and reference work. It has been extensively modernized and extended in the parts dealing with extragalactic astronomy and cosmology. You will also find augmented sections on the solar system, extrasolar planets and astrobiology. Long considered a standard text for physical science majors, Fundamental Astronomy is also an excellent reference work for dedicated amateur astronomers.
Author: Ian Poole
Publisher: Newnes
ISBN: 0080938469
Category : Technology & Engineering
Languages : en
Pages : 273
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Book Description
Basic Radio is a wide ranging introduction to the principles of radio waves, transmission and reception, and to the technologies of broadcasting, satellite and personal communications. As well as being a textbook for vocational courses such as City & Guilds and BTEC Ian Poole's book is essential reading for all communications and broadcast professionals.Radio technology is becoming increasingly important in today's highly sophisticated electronics industry. There are traditional uses including broadcasting and point to point communications, as well as new technologies associated with cellular phones and wire-less data links. All of these developments mean that there will be a greater need for radio engineers at all levels.Ian Poole is an electronic engineer currently involved in project management for the development of a large radio system. He is a regular contributor to Electronic - The Maplin Magazine, Everyday Practical Electronics and Practical Wireless. He has also written several books on amateur radio. - An accessible introduction to radio engineering - Suitable for FE students, technicians and hobbyists - Covers the latest technologies: cellular phones, wire-less data links
Author: Robert C. Higgy
Publisher:
ISBN:
Category :
Languages : en
Pages : 95
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Book Description
Author: Jane M. Rausch
Publisher: Xlibris Corporation
ISBN: 147711047X
Category : History
Languages : en
Pages : 98
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Book Description
In his recent thesis, Radio Sutatenza y Accin Cultural Popular (ACPO): Los Medios de Comunicacin para la Educacin del Campesino Colombiano, (Bogot: Universidad de los Andes, 2009) Jos Arturo Rojas Martnez offers a comprehensive summary of the efforts of Radio Sutatenza, the radio network begun in 1947 by padre Jos Joaqun Salcedo, to create escuelas radiofnicas (radio schools) for the purpose of teaching illiterate adult campesinos (peasants) throughout Colombia not only how to read and write, but also how to better their living conditions and those of their communities. Within twenty years, the project which Rojas Martnez describes as the most important radio experiment of the Catholic Church, grew to include more than 20,000 individual radio schools with an enrollment of some 160,000 to 220,000 students. Consolidated within the Catholic Church in 1949 as Accin Cultural Popular (ACPO), the schools were reinforced by a widely read weekly newspaper, El Campesino (1958-1989), and the publication of cartillas (primers) and books to reinforce the lessons provided via the radio. The program reached its height in the 1970s, but by the 1980s, insurmountable problems began to appear. Disagreements between church authorities, competition from commercial radio stations, conflicts between the leftist revolutionaries, and withdrawal of funding by the national government forced the leaders of ACPO to sell the Sutatenza stations to the radio channel CARACOL. By the 1990s the program had disappeared, but not before it had changed the lives of thousands of campesinos throughout Colombia. Because throughout the world educators hailed Radio Sutatenza during the 1950s and 1960s as a unique and practical way to teach illiterate adults, its methods were closely studied and copied by other countries in Latin America and Africa. The published bibliography concerning the institute is immense, yet, as Jos Arturo Rojas concludes, many aspects of ACPO and the Radio Sutatenza experience remain to be investigated. (p.94). One such aspect is the impact the radio schools had on the inhabitants of one Colombian frontier regionthe Llanos Orientales. The Llanos Orientales or eastern tropical plains, are vast grasslands, that stretch eastward from the towering Eastern Andean Cordillera to continue on into Venezuela. Bisected by tree-lined, fast-flowing tributaries that join the Orinoco River, the region comprises 220,000 square miles or 30% of Colombias territory, but until the mid twentieth century, it was largely a lightly-populated frontier, isolated from the Andean heartland by the barrier posed by the mountain range. In addition to the problem of communication (only one unreliable road linked Bogot to the town of Villavicencio, the gateway to the Llanos), the harsh climate (nine months of heavy rain. three months of drought) and the prevalence of endemic tropical diseases deterred most would-be colonists from settling there. Nevertheless, by 1951 the population had reached 115,124 divided among four political entities: the three national territories of the Intendencia del Meta, the Comisaras Especiales of Arauca and Vichada; and Casanare, a province of the Department of Boyac. Since mountains do not necessarily posed insurmountable barriers to radio waves, it seems reasonable to expect that the arrival of Radio Sutatenza helped break down the traditional isolation of the people in the Llanos. The purpose of this book is to test this proposition by analyzing the impact ACPO and Radio Sutatenza had on the inhabitants of the most prosperous of the Llanos territories, the Intendencia del Meta which became the Departamento del Meta in 1959. Chapter One provides a general overview of organization and operation of Radio Sutatenza and ACPO from 1947 to 1974. Chapter Two briefly reviews the history of Meta and discusses the unique conditions that made it receptive to radio-promoted literacy. Chapter Thr
Author: Robert Charles Higgy
Publisher:
ISBN: 9781258794781
Category :
Languages : en
Pages : 102
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Book Description
