FishinRanger, do you run a Garmin Striker? I have found very few adjustments that the user can make. For instance, gain can be set in Auto or Auto Manuel. In Auto manual you can choice between Auto High, Auto Medium And Auto Low. And so far, I have not found a way to adjust the Range in Sidevu. Nor have I found a way to adjust Brightness or Contrast. If you know how to do these things, please let me know.
GF