

Note: For VHF the Sea Area A1 relates to the location of the Coast Guard antenna and the
height of the antenna on the vessel. MGN 22footnote also refers. VHF Range will be reduced from those shown in
pink above when the height of the antenna above sea level reduces below 4m. In these
cases refer to the Admiralty List of Radio Signals Volume 5 for Range Calculations, see
the section on Management of VHF. This is further described in the first footnote to
Table 16.7.1.