Humminbird HELIX Series Operation Manual page 44

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MEGA SI Cone Angles

455kHz/MEGA+

MEGA SI+ Cone Angles

Set up Sonar

455kHz/MEGA+

Select MEGA for the highest resolution, sharpness, and range (up

to 250 ft side to side).

Select 455 kHz for deep water and overall coverage (up to 800 ft

side to side).

Select MEGA for the highest resolution, sharpness, and range (up

to 400 ft side to side).

Select 800 kHz as an alternative frequency with sharp returns (up

to 250 ft side to side).

Select 455 kHz for deep water and overall coverage (up to 800 ft

side to side).

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