An Introduction of Digital Repeater Design Under APCO Project 25 Standard PDF Download

Author: Jizhou Han
Publisher:
ISBN:
Category : Telecommunication
Languages : en
Pages : 70

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Book Description

Author: Mark J. Wilson
Publisher: American Radio Relay League
ISBN: 0872591093
Category : Reference
Languages : en
Pages : 356

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Book Description
If you're an active ham radio operator, you probably have a story about your first radio contact. Many hams remember that experience even more than their first license examination.

Author: Steve Ford
Publisher: American Radio Relay League
ISBN: 0872591220
Category : Technology & Engineering
Languages : en
Pages : 178

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Book Description
Without complicated "owners manual" jargon, ARRL's VHF Digital Handbook presents the material through a unique how-to approach and friendly, conversational style. Readers will understand how to set up and operate their equipment and software, and make the best use of their VHF digital station.--Book cover.

Author: John S. Burningham
Publisher:
ISBN: 9781631731952
Category :
Languages : en
Pages : 12

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Book Description
Introduction to Digital Mobile Radio (DMR) for Amateur Radio operators. Describes the basics of the DMR technology, how radio amateurs are implementing world-wide networks, selection of user radios, and basic operation for the beginner or someone deciding to purchase DMR equipment to use in amateur radio.

Author: George Kizer
Publisher: John Wiley & Sons
ISBN: 0470125349
Category : Technology & Engineering
Languages : en
Pages : 756

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Book Description
The first book to cover all engineering aspects of microwave communication path design for the digital age Fixed point-to-point microwave systems provide moderate-capacity digital transmission between well-defined locations. Most popular in situations where fiber optics or satellite communication is impractical, it is commonly used for cellular or PCS site interconnectivity where digital connectivity is needed but not economically available from other sources, and in private networks where reliability is most important. Until now, no book has adequately treated all engineering aspects of microwave communications in the digital age. This important new work provides readers with the depth of knowledge necessary for all the system engineering details associated with fixed point-to-point microwave radio path design: the why, what, and how of microwave transmission; design objectives; engineering methodologies; and design philosophy (in the bid, design, and acceptance phase of the project). Written in an easily accessible format, Digital Microwave Communication features an appendix of specialized engineering details and formulas, and offers up chapter coverage of: A Brief History of Microwave Radio Microwave Radio Overview System Components Hypothetical Reference Circuits Multipath Fading Rain Fading Reflections and Obstructions Network Reliability Calculations Regulation of Microwave Radio Networks Radio Network Performance Objectives Designing and Operating Microwave Systems Antennas Radio Diversity Ducting and Obstruction Fading Digital Receiver Interference Path Performance Calculations Digital Microwave Communication: Engineering Point-to-Point Microwave Systems will be of great interest to engineers and managers who specify, design, or evaluate fixed point-to-point microwave systems associated with communications systems and equipment manufacturers, independent and university research organizations, government agencies, telecommunications services, and other users.

Author: Institute of Medicine
Publisher: National Academies Press
ISBN: 0309048885
Category : Medical
Languages : en
Pages : 415

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Book Description
How can we meet the special needs of children for emergency medical services (EMS) when today's EMS systems are often unprepared for the challenge? This comprehensive overview of EMS for children (EMS-C) provides an answer by presenting a vision for tomorrow's EMS-C system and practical recommendations for attaining it. Drawing on many studies and examples, the volume explores why emergency care for childrenâ€"from infants through adolescentsâ€"must differ from that for adults and describes what seriously ill or injured children generally experience in today's EMS systems. The book points the way to integrating EMS-C into current emergency programs and into broader aspects of health care for children. It gives recommendations for ensuring access to emergency care through the 9-1-1 system; training health professionals, from paramedics to physicians; educating the public; providing proper equipment, protocols, and referral systems; improving communications among EMS-C providers; enhancing data resources and expanding research efforts; and stimulating and supporting leadership in EMS-C at the federal and state levels. For those already deeply involved in EMS efforts, this volume is a convenient, up-to-date, and comprehensive source of information and ideas. More importantly, for anyone interested in improving the emergency services available to childrenâ€"emergency care professionals from emergency medical technicians to nurses to physicians, hospital and EMS administrators, public officials, health educators, children's advocacy groups, concerned parents and other responsible adultsâ€"this timely volume provides a realistic plan for action to link EMS-C system components into a workable structure that will better serve all of the nation's children.

Author: Anatoly M. Rembovsky
Publisher: Springer
ISBN: 3319742779
Category : Technology & Engineering
Languages : en
Pages : 486

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Book Description
This book discusses the architecture of modern automated systems for spectrum monitoring including automation components: technical means for spectrum monitoring, special software and engineering infrastructure. The problems of automated system development for search and localization of unauthorized radio emission sources in open localities, mathematical methods and algorithms for modulation of parameter measurements for wireless communication as well as issues of identification and localization of radio emission sources are considered. Constructive solutions and modern technical means for radio monitoring and their application are given. Numerous examples are described for the implementation of automated systems, digital radio receivers and radio direction-finders, analyzers of parameters for GSM, CDMA, LTE, DVB-T/T2, Wi-Fi, DMR, P25, TETRA and DECT signals. Practical implementations of the described methods are presented in applied software packages and in radio monitoring equipment.

Author: David Bailey
Publisher: Elsevier
ISBN: 008047389X
Category : Technology & Engineering
Languages : en
Pages : 296

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Book Description
Instrumentation and control, and electrical power engineering are increasingly reliant on radio-based communication technology. This is a comprehensive book covering the essentials of telemetry and radio communications. It explains the principles of telemetry and radio communications, describes their application and equips you with the skills to analyse, specify and debug telemetry and radio communications systems.Key issues addressed in this book are: * how to design and install radio (wireless) links* apply latest satellite technologies to your telemetry system* how to design and install microwave links* troubleshoot telemetry communications problems* tips, tricks and traps with radio links·A guide to the design, installation and utilization of radio applications in instrumentation and control, and electrical power engineering·Explains the principles of telemetry and radio communications, describes their application and equips you with the skills to analyse, specify and debug telemetry and radio communications systems·Addresses topical areas such as designing and installing wireless communications links, the application of satellite technologies in telemetry, microwave links, etc.

Author: Matthew Neely
Publisher: Newnes
ISBN: 1597497320
Category : Computers
Languages : en
Pages : 185

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Book Description
In many penetration tests, there is a lot of useful information to be gathered from the radios used by organizations. These radios can include two-way radios used by guards, wireless headsets, cordless phones and wireless cameras. Wireless Reconnaissance in Penetration Testing describes the many ways that a penetration tester can gather and apply the information available from radio traffic. Stopping attacks means thinking like an attacker, and understanding all the ways that attackers gather information, or in industry terms profile, specific targets. With information from what equipment to use and how to find frequency information, to tips for reducing radio information leakage, to actual case studies describing how this information can be used to attack computer systems, this book is the go-to resource for penetration testing and radio profiling. - Author Matthew Neely is a respected and well-known expert and speaker on radio reconnaissance and penetration testing - Includes real-world case studies of actual penetration tests using radio profiling - Covers data leakage, frequency, attacks, and information gathering

Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Book Description
[Vol. 2:] contributions from representatives of international and regional organizations and telecommunication operators and manufacturers / official statements and addresses.