These notes contain an overview of basic problems of the International Radio Regulations. Access to the existing information infrastructure, and to that of the future Information Society, depends critically on radio, especially in poor, remote and sparsely populated regions with under-developed telecommunication infrastructure. How the spectrum of radio frequencies is regulated has profound impact on the society, its security, prosperity, and culture. The radio regulations represent a very important framework for an adequate use of radio and should be known by all of those working in the field. The author of these notes Professor Ryszard (Richard) Struzak, Co-Director of the series of schools on Radio Use at the Abdus Salam International Centre for Theoretical Physics (ICTP), is very well qualified to present the issue having been Vice-Chair of the Radio Regulations Board of International Telecommunication Union (ITU), a specialized agency of the United Nations (UN). He is also former Co-Chair of the Spectrum Management/Utilization Working Group of International Union of Radio Science (URSI). Prof. Struzak served as a consultant to the UN, ITU, World Bank and governmental and private sector entities in a number of countries, and as Editor-in-Chief and Chair of Advisory Editorial Board of Global Communications. Earlier, he headed the technical department at the ITU International Radio Consultative Committee (CCIR) for more than nine years. Prior to joining the ITU, he served as university professor and head of national R&D laboratories on electromagnetic compatibility (EMC) and antennas in Poland. He has co-founded the International Wroclaw EMC Symposium and served for many years as its officer, the Symposium Chair and Program Chair. An Academician of the International Telecommunication Academy and IEEE Fellow, he was honoured by two international awards, the ITU Silver Medal, and numerous national awards and decorations. He received BSc, MSc, PhD, DSc, and the rank of full University Professor for life. (ISBN 92-95003-23-3)