Download or read book Radio Free Dixie written by Timothy B. Tyson and published by Univ of North Carolina Press. This book was released on 2009-11-15 with total page 413 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book tells the remarkable story of Robert F. Williams--one of the most influential black activists of the generation that toppled Jim Crow and forever altered the arc of American history. In the late 1950s, as president of the Monroe, North Carolina, branch of the NAACP, Williams and his followers used machine guns, dynamite, and Molotov cocktails to confront Klan terrorists. Advocating "armed self-reliance" by blacks, Williams challenged not only white supremacists but also Martin Luther King Jr. and the civil rights establishment. Forced to flee during the 1960s to Cuba--where he broadcast "Radio Free Dixie," a program of black politics and music that could be heard as far away as Los Angeles and New York City--and then China, Williams remained a controversial figure for the rest of his life. Historians have customarily portrayed the civil rights movement as a nonviolent call on America's conscience--and the subsequent rise of Black Power as a violent repudiation of the civil rights dream. But Radio Free Dixie reveals that both movements grew out of the same soil, confronted the same predicaments, and reflected the same quest for African American freedom. As Robert Williams's story demonstrates, independent black political action, black cultural pride, and armed self-reliance operated in the South in tension and in tandem with legal efforts and nonviolent protest.
Download or read book Elements of Radio Frequency Energy Harvesting and Wireless Power Transfer Systems written by Taimoor Khan and published by CRC Press. This book was released on 2020-11-12 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on elementary concepts of both radio frequency energy harvesting (RFEH) and wireless power transfer (WPT), and highlights their fundamental requirements followed by recent advancements. It provides a systematic overview of the key components required for RFEH and WPT applications and also comprehensively introduces the pioneering research advancements achieved to date. The state-of-the-art circuit design topologies for the two different applications are presented mainly in terms of antenna operating frequencies, polarization characteristics, efficient matching network circuits, rectifier topologies, and overall rectenna systems. The book serves as a single point of reference for practicing engineers and researchers searching for potential sources and elements involved in the RFEH system as well as in the WPT system, and need rapid training and design guidelines in the following areas: • Different sensing elements used in RFEH and WPT • Inclusions of mathematical expressions and design problems • Illustration of some design examples and performance enhancement techniques
Download or read book Radio News written by and published by . This book was released on 1923 with total page 866 pages. Available in PDF, EPUB and Kindle. Book excerpt: Some issues, 1943-July 1948, include separately paged and numbered section called Radio-electronic engineering edition (called Radionics edition in 1943)
Download or read book IEEE 802 11ba written by Steve Shellhammer and published by John Wiley & Sons. This book was released on 2023-02-01 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: IEEE 802.11ba Discover the latest developments in IEEE 802.11ba and Wake-up Radios In IEEE 802.11ba: Ultra-Low Power Wake-up Radio Standard, expert engineers Drs. Steve Shellhammer, Alfred Asterjadhi, and Yanjun Sun deliver a detailed discussion of the IEEE 802.11ba standard. The book begins by explaining the concept of a wake-up radio (WUR) and how it fits into the overall 802.11 standard, as well as how a WUR saves power and extends battery life. The authors go on to describe the medium access control (MAC) layer in detail and then talk about the various protocols used to negotiate WUR operation, its uses for different functionalities (like wake up of the main radio, discovery, synchronization, and security). The book offers a detailed description of the physical (PHY) layer packet construction and the rationale for the design, as well as the various design aspects of the medium access control layer. It also includes: A thorough introduction to the motivations driving the development of the WUR in 802.11 Practical overviews of IEEE 802.11, including the basic concepts of 802.11 (the PHY and MAC) and background material on current low power modes Comprehensive discussions of the physical layer and PHY layer performance, including the generic receiver, the PPDU, Transmit Diversity, and the FDMA mode In-depth examinations of the medium access layer and its frame designs Perfect for professional wireless engineers, IEEE 802.11ba: Ultra-Low Power Wake-up Radio Standard will also earn a place in the libraries of academics and students researching and studying in fields involving wireless communications.
Download or read book The Popular Engineer written by and published by . This book was released on 1923 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Design and Implementation of Low Power CMOS Radio Receivers written by Derek Shaeffer and published by Springer Science & Business Media. This book was released on 2007-05-08 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is hardly a profound observation to note that we remain in the midst of a wireless revolution. In 1998 alone, over 150 million cell phones were sold worldwide, representing an astonishing 50% increase over the previous year. Maintaining such a remarkable growth rate requires constant innovation to decrease cost while increasing performance and functionality. Traditionally, wireless products have depended on a mixture of semicond- tor technologies, spanning GaAs, bipolar and BiCMOS, just to name a few. A question that has been hotly debated is whether CMOS could ever be suitable for RF applications. However, given the acknowledged inferiority of CMOS transistors relative to those in other candidate technologies, it has been argued by many that “CMOS RF” is an oxymoron, an endeavor best left cloistered in the ivory towers of academia. In rebuttal, there are several compelling reasons to consider CMOS for wi- less applications. Aside from the exponential device and density improvements delivered regularly by Moore’s law, only CMOS offers a technology path for integrating RF and digital elements, potentially leading to exceptionally c- pact and low-cost devices. To enable this achievement, several thorny issues need to be resolved. Among these are the problem of poor passive com- nents, broadband noise in MOSFETs, and phase noise in oscillators made with CMOS. Beyond the component level, there is also the important question of whether there are different architectural choices that one would make if CMOS were used, given the different constraints.
Download or read book HAM Radios written by Barrett Williams and published by Barrett Williams. This book was released on 2024-09-01 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt: **Discover the Fascinating World of HAM Radio with 'HAM Radios'** Unlock the world of amateur radio with *HAM Radios*, the ultimate guide for everyone from curious beginners to seasoned operators looking to expand their knowledge. This comprehensive eBook dives deep into the quintessential elements and practices of HAM radio, ensuring you become proficient in this captivating hobby and essential communication skill. *HAM Radios* starts by shedding light on the fundamental aspects of amateur radio, including its intriguing history and the myriad benefits it offers. As you progress, you'll gain a thorough understanding of radio frequencies, from basic waveforms to selecting the appropriate frequency bands for your communication needs. Equip yourself with essential knowledge about HAM radio equipment. Learn to differentiate between handheld radios and base stations, and discover the accessories vital for optimal performance. You'll receive step-by-step guidance on setting up your first HAM radio station, from choosing the perfect location to ensuring an efficient power setup. Dive into the complexities of antennas and signal propagation, learning to optimize your setup for the best signal strength and clarity. Master operating procedures, from making your first contact to handling repeater operations with ease and professionalism. Licensing and regulations are demystified with practical study tips for passing exams and understanding the legalities and ethics vital to HAM radio. Explore the social aspects of HAM radio by finding clubs, engaging with the community, and participating in events and contests. Don't let common issues ruin your experience. Our troubleshooting chapter addresses signal interference, equipment malfunctions, and more, ensuring you stay on the air. Understand the critical role of HAM radio in emergencies and learn to set up a robust emergency communication plan. Expand your capabilities with advanced topics, such as building custom antennas, experimenting with digital communication, and even exploring satellite communication. With chapters on the latest software and apps, you'll leverage technology to enhance your HAM radio journey. *HAM Radios* concludes by inspiring you to become an active community member, organizing events, mentoring newcomers, and contributing to public service, all while staying abreast of emerging technologies and trends that will shape the future of HAM radio. Embark on your HAM radio adventure with confidence and competence. Dive into *HAM Radios* today and become a part of this passionate and vibrant community!
Download or read book Planet Earth written by Cesare Emiliani and published by Cambridge University Press. This book was released on 1992-08-28 with total page 740 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book explains why we have such a vast array of environments across the cosmos and on our own planet, and also a stunning diversity of plant and animal life on earth.
Download or read book Citizens Radio Call Book Magazine written by and published by . This book was released on 1926 with total page 790 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Service Bulletin written by and published by . This book was released on 1928 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mobility based Time References for Wireless Sensor Networks written by Fabio Sebastiano and published by Springer Science & Business Media. This book was released on 2012-08-09 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the use of low-power low-cost and extremely small radios to provide essential time reference for wireless sensor networks. The authors explain how to integrate such radios in a standard CMOS process to reduce both cost and size, while focusing on the challenge of designing a fully integrated time reference for such radios. To enable the integration of the time reference, system techniques are proposed and analyzed, several kinds of integrated time references are reviewed, and mobility-based references are identified as viable candidates to provide the required accuracy at low-power consumption. Practical implementations of a mobility-based oscillator and a temperature sensor are also presented, which demonstrate the required accuracy over a wide temperature range, while drawing 51-uW from a 1.2-V supply in a 65-nm CMOS process.
Download or read book Special Publication Coast and Geodetic Survey written by U.S. Coast and Geodetic Survey and published by . This book was released on 1942 with total page 994 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydrographic Manual written by U.S. Coast and Geodetic Survey and published by . This book was released on 1942 with total page 994 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Code of Federal Regulations written by and published by . This book was released on 2001 with total page 852 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Official Gazette of the United States Patent Office written by United States. Patent Office and published by . This book was released on 1930 with total page 1264 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Saturday Evening Post written by and published by . This book was released on 1927 with total page 994 pages. Available in PDF, EPUB and Kindle. Book excerpt:
