Gain referred to a short vertical antenna

From International Dictionary of Marine Aids to Navigation
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The gain of an antenna in a given direction when the reference antenna is a perfect vertical antenna, much shorter than one quarter of the wavelength, placed on the surface of a perfectly conducting plane earth.

Symbol Gv

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