Les Barclay OBE is a consultant in radiowave propagation and spectrum management. He is also visiting professor at the universities of Lancaster, Surrey and Bradford, where he lectures in radio regulation, spectrum management and propogation. He has been involved in the organisation and lecturing for all IEE residential courses in radiowave propagation, and has latterly chaired the organizing committee for these courses Prior to this, he was the deputy director at the Radiocommunications Agency, responsible for research. He also acted as international chairman of ITU-Study Group 3 on radiowave propagation and chairman on the IEE professional groups on antennas and propagation, as well as on radiocommunications. He is a Fellow of both the Royal Academy of Engineering and the IEE.

• Chapter 1: Radiowave propagation and spectrum useChapter 2: Basic principles 1Chapter 3: Basic principles 2Chapter 4: Propagation data requirements for radiocommunications system planningChapter 5: Electromagnetic wave propagationChapter 6: Reflection and scattering from rough surfacesChapter 7: Clear-air characteristics of the troposphereChapter 8: Introduction to diffractionChapter 9: Short-range propagationChapter 10: Numerically intensive propagation prediction methodsChapter 11: Outdoor mobile propagationChapter 12: Propagation in rain and cloudsChapter 13: The propagation aspects of broadcasting at VHF and UHFChapter 14: Propagation aspects of mobile spread spectrum networksChapter 15: Basic physics of the ionosphereChapter 16: Ionospheric propagationChapter 17: Ionospherice prediction methods and modelsChapter 18: Surface waves, and sky waves below 2 MHzChapter 19: Terrestrial line-of-sight links: Recommendations ITU-R P.530Chapter 20: The principal elements of Recommendation ITU-R P.452Chapter 21: Earth-space propagation: Recommendation ITU-R P.618