Question about Garmin Fishfinder 160 GPS Receiver

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Garmin Fishfinder 160 will not display bottom contours and does not display depth continuously.

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  • robca54 Mar 15, 2009

    The transducer is of course below the waterline and is 3/8 of an inch below the aluminium hull and 20 inches to one side of the propeller.

  • robca54 Mar 16, 2009

    Thank-you for the advice, I will lower the transducer and try in on manual settings. It seems to make sense, I did get a bottom image at one time when it was on manual settings and the gain was set quite high/ low -5???
    Will not be able to try it out until the weekend, but will keep you informed, thanks again.

  • robca54 Apr 07, 2009

    I lowered the transducer so that it was about 3/4" below the bottom of the boat and it worked very well with all settings on manual, I will also switch it over to fresh water even though I fish only in the ocean.
    Thank-you everyone for your help and advice, it has been most helpful.

  • robca54 Apr 07, 2009

    I lowered the transducer so that it was about 3/4" below the bottom of the boat and it worked very well with all settings on manual, I will also switch it over to fresh water even though I fish only in the ocean.
    Thank-you everyone for your help and advice, it has been most helpful.

  • Dean
    Dean May 11, 2010

    Where do you have the transducer positioned in relation to the hull , and the height of the trasnducer... is it below the waterline?



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Change your setting from saltwater to fresh water even if you fish in sea water,your transducer is a 00/200KHZ and not a 50/200KHZ.
Good luck

Posted on Apr 07, 2009

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If you can drop it even a little further to about an inch below hull line and try it, that would be a good test. I guess the only other thing to check is that the transducer is close to horizontal in its positioning, and then check your gain/sensitivity settings. Try remove the settings from any auto modes they may be set on and manually set gain/sensitivity to a higher value. Often when you set a fishfinder to Auto mode you automatically lose up to 30% of the raw data that comes from the transducer!

If all of the above have been done and still no success it might be worth contacting Garmin or sourcing a replacement unit/transducer. That is about all I can think of at this stage.

Posted on Mar 15, 2009

  • Dean
    Dean Mar 16, 2009

    Yes try lowering when you can and let me know.
    I have used quite a few fishfinders and using "Auto" settings is quite a big no-no if you really want your sounder to perform in its best possible manner.

    Also, I would seriously recommend grabbing">this book
    It is an awesome book showing you how to set up fishfinders properly and how to interpret what you see on the screen.

  • Dean
    Dean Apr 07, 2009

    Great to hear you have it working well now after lowering it!
    Please rate my solution on FixYa!



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