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Q. Why am I not receiving fish information from my sounder around obscured places like rises and ravines which are on the bottom of the lake?

A. If your transducer has a greater cone angle, then the diameter of coverage is increased so the user can see more fish. However the drawback to a wide cone angle is that the detail of bottom features are reduced and fish are obscured around bottom structures such as rises and ravines. (See your Owner's Manual for a more detailed explanation of cone angle and "dead zone".)

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