degradation of the reception of a wanted signal caused by a radio-frequency disturbance
NOTE 1 – The English words “interference” and “disturbance” are often used indiscriminately. The expression “radio-frequency interference” is also commonly applied to a radio-frequency disturbance or an unwanted signal.
NOTE 2 – Various levels of interference are defined for administrative purposes in the ITU Radio Regulations viz. permissible interference, accepted interference and harmful interference.
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