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The LH-5000 stops sounding the warning signal until the PTT key is
released.
Press the FOG key on the front panel.
Press the Down key to select "UNDERWAY".
The following information appears on the screen.
Press the ENT key on the front panel to activate the automatic
warning signal.
The FOG key lights red, and the following information appears on
the screen.
Press the ALL key on the front panel.
Press the MENU key on the front panel.
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