just thought of one more thing......keep your regular 2d sonar in the 200khz only . this way if you see structure on it, it should show up on the di . if it doest t then you need to adjust the di.
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just thought of one more thing......keep your regular 2d sonar in the 200khz only . this way if you see structure on it, it should show up on the di . if it doest t then you need to adjust the di.