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7 Results Found For "in-line"
Transmission Lines Explained
Getting the signal from your radio to the antenna is a vital component of any radio setup, but few understand the full impact their feeder is having. This is where "Transmission Lines Explained" steps in. It provides the theory involved, through descriptions and techniques rather than mathematics. The book delivers an understanding of the theory, operation, and use of transmission lines. It examines where twin-line cable or coaxial cables are used, not only as antenna feeder cables, but also as a basis for the matching arrangement between a line and its load. Broken down into logical sections, the 136-page paperback includes examples of how transmission lines can be constructed to suit particular applications. Techniques are featured that summarize how coaxial cables can be fitted with connectors, including BNC, N and PL259 types. There is a section covering the use of the Smith Chart, where the effect of a mismatched load on a transmission line is described, including several practical examples. Of course, you'll see mathematical explanations of given situations, where necessary. Explanations of the coefficients associated with transmission lines are provided. This sets the scene to describe how a mismatch between the transmission line and its terminating load results in a reduced power transfer and its consequence, a standing wave pattern. Details are provided covering how different impedances can be matched using sections of transmission line, common mode currents, their effect and how they can be minimized using baluns. "Transmission Lines Explained" is the ideal compilation of techniques, descriptions, and examples so that radio amateurs can gain an understanding of the concepts associated with transmission lines.
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$19.99
ARRL's Best Of The Doctor Is In
ARRL's Best of The Doctor Is In has the Answers About Antenna Systems For more than a decade, Joel Hallas, W1ZR, has been offering ideas and advice to radio amateurs in QST magazine's "The Doctor is In" column. Each month he educates, dispenses cures for troublesome problems, and indulges in more than a little technical myth busting. In Volume 1 of this series, we've gathered the most frequently asked questions, as well as Joel's detailed answers, on the topic of antenna systems. Many answers include comprehensive illustrations. You'll find helpful information about... * VHF/UHF Antennas * HF Wire Antennas * HF Vertical Antennas * HF Yagi Antennas * Transmission Lines If you're puzzling over how to improve your station antennas, or solve a problem with your antenna system, chances are someone else has shared the same questions with – and received helpful answers from – The Doctor. Having ARRL's Best of The Doctor is In at hand is the next best thing to a visit from W1ZR himself!
Not Yet Reviewed
$19.95
SWR Explained
Many radio amateurs are familiar with the concept of the Standing Wave Ratio (SWR) and the effect it has on the transmission and reception of signals. Few, however, understand much about it beyond the adjustment of an antenna tuning unit to the reduce SWR. "SWR Explained" fills that gap and provides the context that makes electromagnetic waves, transmission lines, and VSWR comprehensible. Written by leading electrical engineer Reg Irish, G4LUF, this 64-page paperback explains what waves are, how they move in free space, and how guided waves react. Steering clear of great chunks of heavy mathematical theory, the author brings your personal experience to bear so that the reader gets a practical feel for the topic. How transmission lines react is explained, along with matching and even using transmission lines as resonant circuit elements. There are designs for measurement of transmission lines and a practical guide to the working of a VSWR meter.
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$11.99
The Paraset Radio
The Paraset Radio, by Hiroki Kato, AH6CY, is a story of a WWII Spy-Radio and How to Build a Working Replica. This book describes the gripping story behind the Paraset - a unique spy-radio, dropped behind enemy lines in the dark days of WWII. This radio being both light weight and state of the art for the time was concealed in a suitcase, making ideal for use by the spies of SOE. This book describes how the Paraset was used, the technical specification and even how you might build your own replica. Written by acknowledged Paraset enthusiast Hiroki Kato, AH6CY this book was inspired by the epic stories connected to this radio and is meticulously researched. These radios were first made in workshops in England at Whaddon Hall and then at Little Horwood, near Bletchley Park. Sadly, most were destroyed at the end of the war and today only a few original Parasets remain in museums and the hands of private collectors. However, inspired by the Paraset stories, radio amateurs across the world have been building working reproductions. The Paraset Radio provides a history of this remarkable Morse code only radio that was low power (4-5W), had no meters or even an on/off switch. Hiroki relates how the SOE Agents used the radio in occupied Europe and how the radio was developed during the war. There are schematics of the design of the radio along with advice on how to build your own working example that can be used on amateur radio bands. There is also information on building a Paraset from one of the kits available. Hiroki even shares details of some of the uses he has put his own Paraset radio to on the Amateur Radio bands. The Paraset Radio is a rare insight into a radio that provided vital spy communications in WWII. It may also provide the inspiration for you to build your own working Paraset radio, so that you can get a taste of wartime operating, but without the danger of a fatal 'knock on the door'.
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$13.99
CTU Books 2012 Contest University Textbooks
Order CTU Books 2012 Contest University Textbooks give you the opportunity to gain knowledge that may take you years of practice, trial and error, or lost time to learn otherwise. Get the edge to improve your scores and put your station in the winner's circle. Over the last decade Contest University has presented dozens of programs around the world to teach Radiosport techniques and practices. Their program content changes from year to year to cover a myriad of topics. These 2012 Contest University Textbooks contain the complete set of slides, in print, from the 2012 CTU program. Topics and Presenters include: * The Spirit of Contesting. It Matters!, N6TR * Short Vertical RX Antennas and Feedline Chokes, W8WWV * Small-Station Projects and Contest Operating Strategies, N0AX * Towers: Safety, Maintenance, Proper Load Design, K7NV * 2012 VHF Contesting, W5ZN * Contesting From a City Lot, K2RD * Antennas for Contesting: How They Do What They Do, W3LPL * Contesting From Outside of the USA, XE1KK * Setting up for RTTY Contesting, W0YK * Contest Clubs: Starting, Revitalizing and Growing, W5WZ * Coaxial Feed Lines for Competitive Contesting, W3LPL * The Reverse Beacon System and CW Skimmer, N6TV * Operating a RTTY Contest, W0YK * Enriching Your Contest Experience, K3LR * The Fitful Rise of Solar Cycle 24: What it Means for the Coming Year, W3LPL * Transceiver Performance: 10 Years of Change, NC0B 2012 Contest University Textbooks have 170 pages of presentation talking-point slides, four slides to a page, which will help you to become a successful contester. There is also a handy glossary of Radiosport terms and abbreviations. Ham Radiosport is as competitive as ANY form of sport. Give yourself an edge by reading Contest University textbooks now available from DX Engineering!
Not Yet Reviewed
$19.99
CTU Books 2014 Contest University Textbooks
CTU Books 2014 Contest University Textbooks give you the opportunity to gain knowledge that may take you years of practice, trial and error or lost time to learn otherwise. Get the edge to improve your scores and put your station in the winner's circle. Over the last decade Contest University has presented dozens of programs around the world to teach Radiosport techniques and practices. Their program content changes from year to year to cover a myriad of topics. 2014 Contest University Textbooks contain the complete set of slides, in print, from the 2014 CTU program. Topics and Presenters include: * Contesting the Right Way, K5ZD * Contest Hints and Kinks, N0AX * Receiving Antennas, or What Happened to the Beverages at K3LR and W3LPL, W3LPL * CW Skimmers, DX Cluster, and the Reverse Beacon Network, N6TV * VHF Contesting, W5ZN * Contesting 201: Making and Keeping Your Score, K5ZD * Propagation Trends, 2014-15, W3LPL * All Coaxial Cables are not Created Equal, VE3EJ * The Essentials of RTTY Contesting, W0YK * Contest Tips for Little Pistols, K2YWE * Preparations for Multi-Op Contests and Field Day, W3LPL * Using Waterfall Displays as a Contesting Advantage, N6TV * Advanced RTTY Contesting, W0YK * WRTC2014 for "The Rest of US", K1DG * Radio Contesting's Future, K3LR * Tower, Antenna and Feed Line Maintenance and Improvements, W3LPL* * 2013-14 Rig Contest Results + Test Data Means What?, NC0B 2014 Contest University Textbooks have 182 pages of talking-point presentation slides, four slides to a page, which will help you to become a successful contester. There is also a handy glossary of Radiosport terms and abbreviations.
Not Yet Reviewed
$19.99
ARRL's Hands-On Radio Experiments Volume 3
Ham Radio: Where Hands-On Lives On! Lifelong learners will welcome Volume 3 of ARRL's Hands-On Radio Experiments, assembled from four years (2013-17) of QST's monthly "Hands-On Radio" column, written by Ward Silver, N0AX. Silver expertly leads you through 57 basic electronics experiments, designed to increase your understanding of radio fundamentals, components, circuits and design. Like the previous volumes, the experiments span an eclectic mix of topics: * Electronic Circuits * Antennas and Propagation * Transmission Lines and Impedance Matching * Electronic Fundamentals * Electronic Components * Tests and Test Equipment * RF Techniques * Practical Station Practices As long as we keep putting our hands on radios, there will be new things to learn and new techniques to try! ARRL's Hands-On Radio Experiments Volume 3 includes a complete parts list from all experiments in Volumes 1, 2 and 3! Order your ARRL Books from DX Engineering today!
Not Yet Reviewed
$19.95