Sharpen your pencil--while sharpening your mind! Here’s a fantastic collection of Test Your Knowledge articles from QST, and other challenging logic problems. Enjoy puzzles, quizzes, humorous articles, and word problems; sprinkled with some vintage cartoons. A ham operator’s delight!

First edition. © 2001, The American Radio Relay League, Inc. (ISBN: 0-87259-822-5) #8225