Harmful interference

4-1-075

Any emission, radiation or induction which endangers the functioning of a radio-navigation service or of other safety services or seriously degrades, obstructs or repeatedly interrupts a radio-communication service operating in accordance with the Reference: I.T.U. Regulations.

Reference: I.T.U.

Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)

English