Ranging Mode (R-Mode)

From International Dictionary of Marine Aids to Navigation
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urn:mrn:iala:dic:4-4-0495

Ranging Mode (R-Mode) is a maritime positioning and timing system that uses radio infrastructure to transmit synchronised radio signals in frequency bands which are allocated to maritime usage.




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