I have two 898 units. One mounted on my dash and one on the front. Both units are linked through an interlink box. For some reason I have perfect clarity on the sonar and down scan on the unit on my dash but the unit on the front is not near as clear. It seems to be picking up some interference. It shows a lot of vertical lines which that run from the top of the screen to the bottom. I have all of the settings on both units set up exactly the same. Any idea why the unit on the dash reads clearly and the one on the front shows some clutter?
Thanks,