I have an amateur radio license, but I never had much time to sort through the processes, the whys and wherefores. Because of the times we currently live in, I've focused more attention to amateur radio. There's a lot of information I can Google, and that helps a lot, but sometimes I don't even know what I'm looking for when I'm facing a problem. This is where this book really fills a gap. The author defines the subject or problem clearly, explains what needs to be done and then outlines possible solutions or approaches to solve the problem. The book is not just about problems or testing approaches, it's also about how to best set up your amateur radio station. Extremely well written and the index looks to be at least 200 entries, maybe even closer to 250. I bought the printed version because I wanted to be able to have it handy as a reference and just to randomly pick it up to read about a subject. It's 358 pages long and it's a bargain. 73's