airwaves

Citizens guide to the airwaves 13 June 2011 APC

There is no simple definition of spectrum. From a technical viewpoint, spectrum is the range of electromagnetic waves that can be used to transmit information. From a practical point of view, however, the effective management of spectrum embraces not only electromagnetic waves, but the technology used to transmit those waves, as well as the economic and political aspects of what is now a valuable national resource.