Main beam
4-1-395
The beam in the main lobe lying within the specified values of field strength relative to the maximum field strength.
Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)
4-1-395
The beam in the main lobe lying within the specified values of field strength relative to the maximum field strength.
Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)
International Association of Marine Aids to Navigation and Lighthouse Authorities - AISM