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Here is another thing I can troll by a bridge pylon. 3 ft thick and 15 ft long . Have my chart speed at 3 and speed at 3 mph . It shows on the screen as a dot and a shadow behind it. I have adjusted the sensitivity in SI enhance and the contrast to every imaginable setting all it does is make the image brighter or darker.while doing this I have tried all different things side range, depth range, chart speed changes, split screnes you name it. Still just a dot with a shadow. Is that what it should be. This is why I am on here. To try to get answers and see if I need to send it to HB. I just don't want to be out of a sonar for a few months after the amount of money I spent.
How do you know what type of transducer you have for sure?