Harmful interference

From International Dictionary of Marine Aids to Navigation
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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)

charge current


Time period

roll period


International Association of Marine Aids to Navigation and Lighthouse Authorities - AISM