Unless something has changed, the depth at which you are recording also influences the displayed field of range. I had mine set at 50' per side I think. If you begin in less than 10 fow you will get a certain range along with your water column (not 50 f). If you start in 20-25 fow you will get the water column and very little per side. I'm not even sure that we get 50' for eg from the ducer to end of range. Cannot remember. That's how I best recall. Hoping that they have improved that piece. You will be able to tell us soon.