Instruct: Classify Amazon reviews into positive or negative sentiment
Query: outdated

This book has a copyright date of 1995. Some of the information and laws have changed since this book has been written. The scanners that are on the market today did not exist 12 years ago, therefore most of the information on the scanner itself is hopelessly outdated. Other than radio theory which at times can be confusing, this book is a waste of time.