If you're like most hams, radio-frequency interference has caused you headaches on more than one occasion during your ham career. Odds are, you're not anxious to repeat these RFI experiences! Despite our best efforts to lay RFI to rest over the past nine decades or so, it remains very much with us.

Part of the reason is that there are as many kinds of RFI as there are kinds of electronic devices. Add to that the variety of environments in which these devices can be installed, and you've got a thorny problem. Just when it looks like one type of interference problem has been licked, a new electronic device that is susceptible to RF energy enters the marketplace.

The best defense in this ongoing battle? Quite simply, drawing on the experiences of RFI experts who know the best way to tackle RFI problems. That's where The ARRL RFI Book comes in. The successor to the popular Radio Frequency Interference: How to Find It and Fix It, this book is your authoritative source for practical RFI solutions. We have asked experts in the various types of RFI to provide insights and solutions to the types of problems they know best. These experts, both amateur and professional, provide their expertise clearly and concisely.

Our thanks to these authors, as well as the hundreds of other hams who have unselfishly shared their RFI solutions with the ham community over the years. Our goal is to remove RFI as a problem for hams. Although we may never fully reach this goal, this book is a major step in that direction.