455kHz = more coverage with less detail ...
800kHz = more detail with less coverage ...
SI Sensitivity is relative because environmental conditions mostly dictate the value needed for best imaging ...
Harder bottom will need less Sensitivity ...
Shallower water will need less Sensitivity ...
Can you post some images for interpretation ...??
Rickie


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Welcome aboard. Have you tried running a default reset to see if the sonar would correct itself. You should be getting a good sonar picture with both setting. It would help also to see pictures of what you are saying is a good vs bad sonar picture. You came to the right place they are some really good sonar people here that can help you they have really helped me. I know they can help you also.
















