Sonar Options - Lowrance HOOK-4 Operation Manual

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Sonar options

Noise rejection
Uses advanced signal processing to monitor the
effects noise (boat pumps, water conditions,
engine ignition systems, etc.) has on your display,
and then filters out undesired signals.
Surface clarity
Surface Clarity reduces sur-
face clutter by decreasing the
sensitivity of the receiver near
the surface.
Split zoom and Split flasher
Switches the sonar display from full screen sonar
to a split screen view.
Split zoom
Color
Allows you to change the look of the display using
palettes with varying degrees of color/brightness.
23
Surface clutter
Split flasher
Sonar Operation |
HOOK series

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