The ARRL Extra Class License Manual for Ham Radio
The ARRL Extra Class License Manual for Ham Radio

Author: H. Ward Silver

Publisher: American Radio Relay League

Published: 2008

Total Pages: 500

ISBN-13: 0872591352

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"Pass the 50-question Extra Class test; all the exam questions with answer key, for use beginning July 1, 2008 to June 30, 2012; detailed explanations for all questions including FCC rules"--Cover.

Handbook of Scientific Methods of Inquiry for Intelligence Analysis
Handbook of Scientific Methods of Inquiry for Intelligence Analysis

Author: Hank Prunckun

Publisher: Scarecrow Press

Published: 2010

Total Pages: 249

ISBN-13: 0810871912

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With the exponential growth in the intelligence field in the last few years, the profession has grown much larger and its mission more complex. Government and private sector security agencies have recruited intelligence analysts to process what has become a voluminous amount of raw information flowing into these agencies' data collection systems. Unfortunately, there is an unmet need for analysts who are able to process these data. For this reason there are a growing number of colleges and universities that offer intelligence training so that candidates for analyst positions can take-up their duties without protracted on-the-job instruction. Handbook of Scientific Methods of Inquiry for Intelligence Analysis offers students in such courses a way of gaining the analytic skills essential to undertake intelligence work. This book acquaints students and analysts with how intelligence fits into the larger research framework. It covers not only the essentials of applied research but also explains the function, structure, and operational methods specifically involved in intelligence work. It looks at how analysts work with classified information in a security conscious environment, as well as obtaining data via covert methods. Students are left with little doubt about what intelligence is and how it is developed using scientific methods of inquiry.

Practical Antenna Handbook 5/e
Practical Antenna Handbook 5/e

Author: Joseph Carr

Publisher: McGraw Hill Professional

Published: 2011-10-25

Total Pages: 785

ISBN-13: 0071639586

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THE DEFINITIVE ANTENNA REFERENCE--FULLY REVISED AND EXPANDED! Design and build your own antennas with the help of this unique guide. Updated and revised to provide clear answers to questions frequently asked by hobbyists and electronics technicians, Practical Antenna Handbook, Fifth Edition blends theoretical concepts with hands-on experience--requiring only high school mathematics Reorganized to flow logically from broad physical principles to specific antenna design and construction techniques, the book begins by covering the fundamentals. Then the half-wave dipole is discussed both as an excellent antenna in its own right and as a conceptual tool for predicting the performance of other designs. Transmission line impedance matching techniques--and a companion Smith chart tutorial--lead into "must have" accessories for tuning, monitoring, and troubleshooting antenna system performance. Other tools, such as antenna modeling software and network analyzer add-ons for PCs and Macs, are addressed, and concluding chapters offer fresh insights into support structures and installation techniques. NEW TOPICS COVERED INCLUDE: Characteristics of all-driven and parasitic arrays Beverages and small MF/HF receiving loops Top-loaded shunt-fed towers and other verticals Theory and design of Yagi beams Effect of real ground on propagation and antenna patterns, impedance, and efficiency Lightning protection and four kinds of ground systems Zoning and restrictive covenants COVERS A WIDE VARIETY OF ANTENNAS: Dipoles and inverted-Vs Quads, delta, and NVIS loops Wire arrays (bobtail curtain, half-square, rhombic) Verticals and shunt-fed towers Rotatable Yagi beams MF/HF receiving antennas (flag, pennant, K9AY, Beverage) Mobile and portable antennas VHF/UHF/microwave antennas And many more GO TO WWW.MHPROFESSIONAL.COM/CARR5 FOR: * Tables of worldwide geographic coordinates and antenna dimensions vs. frequency * Supplier updates * Author's blog * Additional photographs and schematics * Links to tutorials and specialized calculators