In fact Mad Jock, your post 14 says it all about the requirements to learn the JAR syllabus.
For example, my instructors said Loran C was largely obsolete in practice and would not feature in the JAR question bank, so I ignored it and moved on.
If I wanted access to the information that you have learned and churned onto post 14, all I would have to do would do is a quick google search and follow the very first link, and just about all of the knowledge of Loran C you have shared with us is sitting there, near word for word in Wikipedia!
