Thread: SI interference

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  1. #1
    Member DennisJensen's Avatar
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    SI interference

    I think it might be my jackplate. I had to move ducer from back of jackplate to transom there was a set of holes there already. Didn't want to make any new ones. Sorry i couldn't get of location of new spot. The boat is up at cabin at the moment

  2. Lead sled driver 11pounder's Avatar
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    #2
    Those lines are generally from the signal bouncing around inside the jackplate, but it may also be your lower unit, next time out trim up and see if they go away, if not then it's most likely the JP.

  3. Member DennisJensen's Avatar
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    #3
    I did trim all the way up and it didn't change. How much should i try to get bellow my plate to get clear image? Thanks

  4. Member Wayne P.'s Avatar
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    #4
    Quote Originally Posted by DennisJensen View Post
    I did trim all the way up and it didn't change. How much should i try to get bellow my plate to get clear image? Thanks

    Put it a cover or holeshot plate on the bottom of the jackplate.
    Wayne Purdum
    Charlottesville, Va.
    Helix 12 CHIRP MEGA+ SI G3N/G4N, Helix 15 CHIRP MEGA SI+ GPS G4N
    SOLIX 12 SI/G3, Helix 8 CHIRP MEGA SI+ G4N, Ultrex 80/LINK, MEGA360,
    MEGA LIVE, LIVE TL

  5. Member DennisJensen's Avatar
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    #5
    Quote Originally Posted by Wayne P. View Post
    Put it a cover or holeshot plate on the bottom of the jackplate.
    Do i use cover as a mount or just to help with the interference?

  6. Member Wayne P.'s Avatar
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    #6
    Quote Originally Posted by DennisJensen View Post
    Do i use cover as a mount or just to help with the interference?
    You can attach the transducer to the center of the cover, on the side of the jackplate, or on the transom.

    You don't have "interference", the unit is doing what it is supposed to do=record sonar echoes. In your case it is recording echoes from the jackplate.
    Wayne Purdum
    Charlottesville, Va.
    Helix 12 CHIRP MEGA+ SI G3N/G4N, Helix 15 CHIRP MEGA SI+ GPS G4N
    SOLIX 12 SI/G3, Helix 8 CHIRP MEGA SI+ G4N, Ultrex 80/LINK, MEGA360,
    MEGA LIVE, LIVE TL

  7. Member DennisJensen's Avatar
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    #7
    Thanks for the help guys