Why is spectrum “managed”?
Interference can happen if several applications are using similar frequency bands – in other words, if they are taking the same radio path. The effect is a loss of information transmitted. When radio use began, problems of interference were soon apparent. So, public authorities stepped in to regulate spectrum use. Traditionally they did so by regulating in detail all the characteristics of radio emitters and licensed spectrum users. The key aim is to avoid interference, particularly for services of public interest.
