The Ionosphere: Communications, Surveillance, and Direction Finding (Orbit: A Foundation Series)

In a simple, reader-friendly style, this introductory text describes the ionosphere and its effects on systems which use it, giving particular emphasis to HF communications as well as including sections on the single station location of HF transmitters and over-the horizon radar. It is written for those who must understand or operate these systems and for those who just enjoy knowing how things work. A must-read book for the military high-frequency communicator.