| Preface | xv |
| Introduction | xvii |
| Acknowledgments | xix |
Chapter 1 | Introduction to Amateur Radio | 1 |
| Who Can Become a Ham Radio Operator? | 1 |
| New Avenues into Amateur Radio | 2 |
| About Amateur Radio | 2 |
| A History of Amateur Radio | 3 |
| Early pioneers | 3 |
| Beginning of amateur radio | 5 |
| First licenses for amateur radio operators | 7 |
| The death knell for amateur radio | 8 |
| The golden age of amateur radio | 9 |
| Amateur Radio--A Scientific Hobby | 11 |
| Amateur Radio Public Service | 12 |
| The Path into Amateur Radio--The Technician Class License | 15 |
Chapter 2 | How to Prepare for the FCC Technician Class Examination | 19 |
| The Federal Communications Commission | 21 |
| The FCC Volunteer Examiner Program | 22 |
| FCC Amateur Radio Operating Classes | 22 |
| The Amateur Radio Frequency Spectrum | 23 |
| FCC Rules and Regulations | 25 |
| Part 97: Amateur Radio Service | 25 |
| Amateur Call-Sign Allocations | 55 |
| How to Learn International Morse Code | 58 |
| What is Morse Code? | 58 |
| How code is transmitted | 59 |
| Who can learn Morse code? | 61 |
| The FCC Written Examinations | 67 |
| The VEC question pool | 67 |
| Scheduling the examination | 69 |
| Taking the examination | 69 |
Chapter 3 | Radio Communications Theory | 71 |
| Definitions | 71 |
| The Radio Circuit--Transmitter to Receiver | 73 |
| The Electromagnetic Spectrum | 74 |
| Frequency and wavelength | 76 |
| The radio frequency spectrum | 78 |
| Wave propagation | 80 |
| Types of Propagation | 80 |
| The Effects of the Ionosphere on Radio Communications | 82 |
| Ionospheric layers | 83 |
| Sunspots affect the ionosphere | 83 |
| High sunspot activity | 84 |
| Propagation characteristics of the ionosphere | 85 |
| Nighttime propagation conditions | 87 |
Chapter 4 | Principles of Electricity and Magnetism | 89 |
| Definitions | 89 |
| Fundamentals of Electricity | 91 |
| Atoms and matter | 92 |
| Negative and positive charges | 93 |
| Electricity--the flow of electrons | 93 |
| Units of voltage and current | 94 |
| Conductors and insulators | 95 |
| Resistance and resistors | 95 |
| Some Basic Electrical Laws | 98 |
| Ohm's law | 99 |
| Resistors in series | 100 |
| Resistors in parallel | 100 |
| Series-parallel combinations | 101 |
| Current flow in series dc circuits | 101 |
| IR voltage drops | 104 |
| Current flow in parallel dc circuits | 105 |
| Magnetism | 106 |
| The magnetic field | 106 |
| Temporary and permanent magnets | 107 |
| Electromagnetism | 107 |
| Magnetomotive force (MMF) | 108 |
| Electromagnetic induction | 109 |
| Alternating current and voltage | 109 |
| The ac sine wave | 109 |
| ac circuits | 111 |
| Capacitors and Capacitance | 112 |
| How capacitors work | 114 |
| Capacitor voltage ratings | 115 |
| Connecting capacitors in parallel | 115 |
| Connecting capacitors in series | 116 |
| Capacitive reactance | 116 |
| Phase angle of capacitors | 118 |
| Testing capacitors | 118 |
| Inductors and Inductance | 119 |
| Inductance | 119 |
| Series inductors | 121 |
| Parallel inductors | 121 |
| Inductive reactance, X[subscript L] | 123 |
| Phase angle of inductors | 123 |
| Transformers | 124 |
| Basic transformer concepts | 125 |
| Testing inductors and transformers with a multimeter | 127 |
| ac Circuit Analysis | 128 |
| Impedance and phase angles | 128 |
| Resonance and tuned circuits | 129 |
| The Q of resonant circuits | 131 |
| Power Relationships | 131 |
| Power in a dc circuit | 132 |
| Power in an ac circuit | 132 |
| Maximum power transfer | 134 |
Chapter 5 | Tubes and Semiconductors | 135 |
| Definitions | 137 |
| Vacuum Tubes | 139 |
| Thermionic Emission | 139 |
| General Types of Vacuum Tubes | 141 |
| Diodes | 141 |
| The diode as an ac rectifier | 143 |
| Triodes | 144 |
| How triodes work | 145 |
| Triode amplification action | 147 |
| Limitations of triodes | 148 |
| Tetrodes and Pentodes | 149 |
| The tetrode | 149 |
| Limitations of the tetrode | 150 |
| The pentode | 151 |
| The pentode as an amplifier | 152 |
| Beam-power tubes | 153 |
| Gas-filled tubes | 153 |
| Cathode-ray tubes | 154 |
| Diodes, Transistors, and Other Semiconductor Devices | 154 |
| n-type semiconductor | 156 |
| p-type semiconductor | 156 |
| How semiconductor devices are made | 156 |
| The pn junction | 157 |
| How diodes work | 160 |
| Reverse bias | 161 |
| Diode circuits | 162 |
| Special-Purpose Diodes | 164 |
| The zener diode | 165 |
| The varactor diode | 166 |
| Transistors | 166 |
| Bipolar transistor construction | 169 |
| npn transistor operation | 169 |
| pnp transistor operation | 171 |
| Common-base amplifying circuits | 171 |
| Common-emitter amplifier circuits | 174 |
| Common-emitter design considerations | 176 |
| Variations in transistor characteristics | 179 |
| Voltage gain of common-emitter amplifier circuits | 180 |
| Frequency limitations of transistors | 181 |
| The common-collector configuration | 182 |
| Summary of transistor characteristics | 184 |
| Transistor testing | 184 |
| Transistor testing with ohmmeters | 185 |
| Field-Effect Transistors | 187 |
| The junction field-effect transistor | 188 |
| Characteristics of junction field-effect transistors | 189 |
| JFET circuit configurations | 190 |
| Insulated-gate field-effect transistors | 192 |
| Depletion-mode IGFET operation | 192 |
| Enhancement-mode insulated-gate field-effect transistors | 194 |
| Care and handling of insulated-gate semiconductor devices | 196 |
| Optoelectronic Devices | 197 |
| Photodiodes | 198 |
| Light-emitting diodes | 199 |
| LCD displays | 199 |
| Integrated Circuits | 200 |
| Types of integrated circuits | 200 |
| A typical IC--the 555 timer | 202 |
| Packaging of integrated circuits | 202 |
| Linear and digital integrated circuits | 202 |
Chapter 6 | Power Supplies | 205 |
| Definitions | 206 |
| Power-Supply Design Considerations | 209 |
| The power transformer | 209 |
| Rectifier circuits | 210 |
| Filter circuits | 213 |
| Electronic voltage regulators | 218 |
| A word of caution | 223 |
Chapter 7 | Electronic Circuits | 227 |
| Definitions | 227 |
| Audio- and Radio-Frequency Amplifiers | 232 |
| Basic Types of Amplifiers | 234 |
| The ideal amplifier | 234 |
| The Decibel | 236 |
| Voltage and Current Ratios in Decibels | 239 |
| Amplifier Power Levels | 242 |
| Class-A, -B, -AB, and -C Amplifiers | 243 |
| Amplifier Efficiency of Operation | 244 |
| Interstage Coupling Techniques | 245 |
| Direct coupling | 245 |
| Resistance-capacitance (RC) coupling | 247 |
| Transformer coupling | 247 |
| Impedance coupling | 247 |
| Push-Pull Operation | 248 |
| Integrated-Circuit Amplifiers | 249 |
| An IC Audio Amplifier for the Ham Shack | 250 |
| The Oscillator: An Amplifier with Feedback | 253 |
| The Basic Oscillator Circuit | 254 |
| Oscillator Characteristics | 255 |
| The Tuned LC Oscillator | 255 |
| Oscillator Circuits | 257 |
Chapter 8 | Introduction to Radio Transmitters | 269 |
| Definitions | 272 |
| The CW Transmitter | 275 |
| The Master Oscillator Power Amplifier Transmitter | 276 |
| Amplitude-Modulated Transmitters | 280 |
| Conventional AM transmitters | 280 |
| AM carrier and sideband signals | 282 |
| Single-Sideband Modulation | 283 |
| Frequency Modulation | 288 |
| FM transmitters | 289 |
| Transmitter Performance Tests | 290 |
| Transmitter frequency measurements | 290 |
| Frequency counters | 291 |
| Transmitter power measurements | 292 |
Chapter 9 | Introduction to Radio Receivers | 295 |
| Definitions | 297 |
| Receiver Basics | 298 |
| Reception | 299 |
| Selection or selectivity | 300 |
| Demodulation or detection | 301 |
| Reproduction | 302 |
| Simple Receivers | 302 |
| Tuned radio-frequency (TRF) receivers | 302 |
| Direct-conversion receivers | 303 |
| The Superheterodyne Receiver | 305 |
| RF amplifiers | 307 |
| Local oscillators | 307 |
| Mixers | 309 |
| Regenerative-detector receivers | 310 |
| IF amplifiers | 310 |
| Detectors and beat-frequency oscillators | 312 |
| Automatic gain control | 312 |
| S meters | 313 |
| Interference and Receiver Limitations | 313 |
| Receiver Overload | 314 |
| Harmonic Signals | 315 |
| Constructing the "Sudden" 160- to 20-Meter Direct Conversion Receiver | 315 |
| FM Receivers | 319 |
Chapter 10 | All about Transmission Lines and Antennas | 323 |
| Definitions | 324 |
| Transmission Line Basics | 326 |
| Types of Transmission Lines | 327 |
| Twin-lead lines | 327 |
| Coaxial transmission lines | 328 |
| Standing Waves | 329 |
| Standing-wave ratios | 329 |
| High-Frequency Antennas | 332 |
| Half-wave doublet (or dipole) antenna | 333 |
| Safety and other considerations | 340 |
| Multiband antennas | 347 |
| Vertical antennas | 350 |
| Beam antennas | 351 |
| Station Wiring Diagrams | 355 |
Chapter 11 | RF Radiation Safety and Radio Communications Practices and Procedures | 357 |
| Definitions | 357 |
| Radio Frequency Environmental Safety Practices | 361 |
| Determining Compliance with FCC RF Safety Rules and Regulations | 365 |
| General RF safety recommendations | 367 |
| Radio Communications Practices | 368 |
| Station installation | 368 |
| Station layout | 369 |
| Station wiring | 370 |
| Radio-Frequency Interference (RFI) | 371 |
| Elimination of RFI | 371 |
| How to Use Test Equipment | 373 |
| Meter movements | 373 |
| Ammeters | 374 |
| Voltmeters | 374 |
| Ohmmeters | 375 |
| The multimeter | 377 |
| Wattmeters | 377 |
| Operating Procedures | 377 |
| Operating courtesy | 378 |
| CW or telegraph procedures | 379 |
| Q signals | 379 |
| The RST signal-reporting system | 380 |
| Prosigns and standard abbreviations | 380 |
| A Typical Contact on the Technician Bands | 380 |
Appendix A. | Element 2--Technician Class Examination Question Pool | 385 |
| Answers | 481 |
Appendix B. | The W5YI RF Safety Tables | 485 |
| Index | 491 |