"Boys-radio amateurs on the tracks of the voice; or, Solving the Wireless Mystery" is an exciting adventure book from popular author Chapman Allen. In this book, radio amateurs again go on an exciting journey, trying to solve the mystery of wireless communication. They face mysterious temptations, dangers and riddles, where each carefully considered step brings them closer to uncovering the secrets. "Boys-radio amateurs on the tracks of the voice; or, Solving the Wireless Riddle" is a book that will certainly interest all lovers of adventure and invention.