Sources of radio frequency radiation

This chapter aims at providing an idea of the nature and extent of the use of RF radiation. It illustrates and represents some equipment in order to indicate the relative size and deployments of the various systems. Although there are many other sources of RF power including signal generators for testing work that can offer tens and hundreds of watts output, the magnitude of the output of such devices is not appreciable in some specific cases. Therefore, there is a need to be aware of all equipment that may generate significant RF power and the nature of the operation of each item. The maintenance of a register of such items will be an essential provision, with some set frequency of monitoring in all appropriate cases.