Ok thanks guys. I have a fishfinder that shows fish no matter what I do. I know that it is not on simulator mode and I have tried every setting I know and had several other people try it. But the problem continues. The unit is an Eagle 642. It is hooked to the cranking battery and the unit is at the console with the transducer on back. Could this be what I need to solve my problem? I dont have any other electronics on my console if that makes a diff. Thanks