Ian Waugh - A Mariner\'s Guide to Marine Communications

weakest ,

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,

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strongest strongest

1 - - - - - - - - - - - - - - - - - - --- -- ------ -- - --~

Figure Z5 (aJ
The electrical energy is radiated in all directions (except directly upwards from the
antenna) and is strongest at right-angles to the antenna.

Figure Z5(bJ

The energy is radiated equally all around the antenna

MARINE COMMUNICATIONS 151