Abstract
Publisher Summary The world is divided into three regions for frequency planning.The boundaries are formed by geographical features suited to the purpose such as seas, high mountain ranges, or uninhabited remote areas. The International Telecommunications Union (ITU) administers the planning and regulation of the radio frequency spectrum on a worldwide basis through the World Administrative Radio Conferences which decide the use of blocks of the spectrum, for example, sound broadcasting, television, marine communications, and the countries permitted to use the blocks for those allotted purposes. The administration of each country determines the method of allocating frequency bands from each block to the user categories within their country. Every country has a radio-regulatory department within its administration. The first stage of national planning is the assignment of the radio frequencies (channels) within a geographic area. Both the allocation of the blocks to users and the geographic assignment of channels if not wisely carded out can result in spectrum pollution, inter-modulation products are one source.
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