Directivity

From International Dictionary of Marine Aids to Navigation
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4-1-355

1. That property of an antenna by virtue of which it radiates or receives more strongly in some directions than in others.

Reference: B.S.

2. This term is also used in the U.S.A. for Power gain (4-1-365).




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

Centre of buoyancy

South

ampere

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