Surface Clutter - Humminbird HELIX 5 SONAR Operation Manual

Imaging Frequency allows you to select which frequency to apply to the Down Imaging beams
(455 kHz or 800 kHz). For the best overall image quality and depth, select 455 kHz. For the sharpest
image (but limited depth capability), select 800 kHz.
Surface Clutter adjusts the filter that removes surface clutter noise caused by algae and aeration.
The lower the setting, the less surface clutter will be displayed.
Sonar Menu Tab
Imaging Frequency
(Down Imaging Views only [HELIX DI only])
Settings: 800 kHz, 455 kHz; Default = 455 kHz
Down Imaging Beams
45°
455kHz
16°
455kHz
28°
200kHz

Surface Clutter

Settings: Low = 1 to High = 10; Default = 5
62
800kHz
75°
surface clutter