Humminbird 858c HD DI

bbwileybbbwileyb Posts: 15 Greenhorn
Just got this machine and was wondering if the factory installed software shows bottom contours and depth on the GPS screen. Maybe it is just a setting that I am missing, if it is there. Or am I going to nees a Navionics chip ?


  • Snooky SnacksSnooky Snacks Posts: 69 Deckhand
    Need a chip
  • baseball2087baseball2087 Posts: 83 Greenhorn
    I have this same unit, have had some trouble picking up bottom structure and losing the bottom in anything deeper than 400 ft. Does anybody have suggestions for settings to run for the sonar for picking up better bottom structure and bottom in deeper water?
  • Doc StressorDoc Stressor Homosassa, FLPosts: 2,417 Captain
    400 ft is about the limit with the stock Humminbird transducer. You need to go to an Airmar 1 kW transducer for deeper stuff. Get the mix and match cable and the Humminbird adapter and it will plug right in to your unit. Select 50/200 kHz transducer and you'll be good to go.
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