Upgrade to an Extra Class Ham Radio License NOW! It's Quick and Easy with this study guide and the convenient question and answer format. Extra Class is the highest of all three Amateur Radio licenses! This third edition of ARRL's Extra Q & A is your authoritative guide to every question in the Extra (Element 4) question pool--everything you need to pass the top-level Amateur Radio license exam! With more than 700 questions included in the question pool, using ARRL's Extra Q & A is the best way to review for the exam with confidence.