How Fish Finders Work

"How Fish Finders Work"," They help you probe the depths of a lake bed or look out into shallow waters to reveal the best fishing spots.


Fish finders operate under water to map contours, identify objects, including fish, and create a picture on the display of everything they find.
 Rather they identify objects using sonar technology and then interpret the scene using a graphical representation.
 When the signal hits an object it bounces back to the fish finder.


Primary Components A fish finder is made up of two primary components, the display and the transducer.
 The transducer can be mounted directly on the outside hull of the boat - called a transom mount, or through a hole in the hull of the boat looking directly down into the water under the boat.
 Angles are represented in degrees and only objects in the cone angle can be identified.
 Beams can vary from about 60 degrees to 120 degrees.

Frequency is the strength of the sonar signal measured in KHz.
 Lower frequencies can penetrate the water more deeply than higher frequencies (50 KHz is low frequency whereas 192 or 200 KHz is high frequency).
 Some fish finders have color displays while others have black and white.


Integrated Fish FindersMost people want different marine electronics components for a variety of different purposes.
 In addition to saving you money such integrated instrument has the added benefit of taking up less real estate on your boat's dash.


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