Build Your Own Low-Power Transmitters: Projects for the Electronics Experimenter
Build Your Own Low-Power Transmitters was written to fill the need for detailed,project-oriented information pertaining to the design and construction of low-power transmitters. Writing this text involved careful incorporation of details and instruction for the successful completion and operation of 20 low-power audio and video transmitter projects. Hobbyists, technicians, amateur radio operators, and general radio enthusiasts of all skill levels will find this book beneficial; however, the content is designed primarily with the needs of intermediate to advanced radio electronics technicians and experimenters in mind. For successful completion of the projects, some experience is assumed on the part of the experimenter. Project areas covered include RF circuitry and digital techniques. PC board construction is largely used with some surface mount construction where necessary. A few of the projects also use microcontrollers.
This book contains construction details for audio and video transmitters operating at frequencies from 150 kHz to 1300 MHz for Part 15 operation and for Novice Class Amateur use. Included are several low-power AM and FM audio transmitters, from simple, discrete designs to sophisticated PLL-synthesized types. This book also offers chapters on a frequency-synthesized AM broadcast transmitter for 150-1710 kHz, two FM transmitter designs for 88-108 MHz stereo operation, using PLL synthesis digital readouts and microprocessor control, several low-power (0.5-2 watt) TV transmitters covering the 440, 900, and 1300 MHz amateur bands, a data transmitter and receiver, and a chapter on video reception techniques for the special frequencies used.
Other coverage includes a simple low-power CW transmitter, identifier circuits, antennas, and range information. Many projects are of the kind not often seen as published articles. They incorporate modern circuitry techniques, such as PLL synthesis and the use of microprocessors. All projects use standard parts and have been thoroughly tested, with PC board layouts given for most of the projects, as well as parts lists, coil data, and complete setup information. Components and suitable enclosures for several projects are available as kits from the source given in the book. These kits include all necessary parts and drilled and etched PC boards. This convenience simplifies parts procurement and ensures proper performance of each project. We also discuss the legal limits and ramifications of the equipment and offer suggestions and tips for getting the best results from the projects.
A lot of effort has gone into making this book an effective, project-oriented tool for hands-on learning about successfully building low-power transmitters. We hope you will enjoy reading the fruit of our labors and working on the projects contained within.
Rudolf F. Graf and William Sheets
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