dvan1901
Chief Petty Officer
- Joined
- Mar 26, 2006
- Messages
- 503
I have a Standard Horizon CP180i with the FF520 fish finder module and DST525 in hull transducer. I have the transducer mounted in a place that I know is only fiberglass; my hull is not cored. I took it out yesterday and the screen is pretty grainy and doesn't display fish as the "echo arch" you would expect, but more like a blot. The only thing I didn't do when I mounted it was sand off the paint where the transducer was going. Is that really a big deal? Would that cause the grainyness?