HOW ICE FLASHERS WORK
Although the sonar part of an ICE Flasher Series™ Fishfinder works in the same way as
any other Humminbird® control head, the return signal is displayed differently. The ICE
Flasher Series™ LCD is modeled on the original analog displays and represents what is
happening below the transducer the moment it happens. The Flasher Dial displays a
multicolor palette indicating low to high sonar intensity returns, where red indicates high
intensity and green indicates low intensity. See
Color Palettes
for more information.
When fish swim into the area below the transducer, the new sonar return signal is
immediately displayed on the Flasher Dial. Depending on the size of the fish and its
closeness to the transducer, the sonar return will be displayed as a weak, medium, or
strong sonar signal.
In the above example, the sonar return signal from the jig is displayed as a weak signal
(green), the fish is displayed as a medium signal (yellow), and the bottom composition
is displayed as a strong signal (red). When the fish swims towards your jig, you can see
the activity instantly on your Flasher Dial. Also, the Active Display shows that the ICE
45/55 Flasher is reading the depth of 18.3 feet to the bottom.
Medium Sonar
Return Signal
(fish)
Weak Sonar Return
Signal (jig)
Read the Flasher Dial
in a Clockwise Direction
Strong Sonar Return
Signal (bottom)
Algae and Other
Surface Vegetation
Close to
Surface of
the Water
Depth Reading
4
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