20162020 Extra Class book software Author:Gordon West, WB6NOA, Eric P. Nichols, KL7AJ - Technical Editor, Steve Sternitzke, NS5I - Software Package includes the 2016-2020 Gordon West Extra Class study manual along with interactive W5YI HamStudy software. Study the manual and then take practice exams on your PC. If you answer a question incorrectly, the correct answer appears along with Gordo's educational, fun explanation from the book. Software scores your results and shows you whe... more »re you need more study. For Windows operating systems only.« less