Phase modulation (PM)

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5-3-035

Angle modulation in which the instantaneous phase angle of a sine-wave carrier is caused to depart from the carrier angle by an amount proportional to the instantaneous amplitude of the modulating wave.

Reference: I.E.C.




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

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Celsius (previously Centigrade)

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

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