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  1. #1
    Member
    Join Date
    Nov 2004
    Location
    Chesterfield, Va
    Posts
    4,020

    Why are units listed as SI, DI...

    Why are the H'bird units listed as SI, or DI. I am a Lowrance guy myself but helping a young man that I have mentored when it comes to fishing and he is looking at getting the Helix 9 SI GPS KVD set up for a boat he is purchasing. Wondering why the unit name has only SI, will it only do Side Imaging, Normal Sonar, and GPS and not do down imaging or will it do the down imaging also?

  2. Member
    Join Date
    Sep 2017
    Location
    Winfield,WV
    Posts
    218
    #2
    It will do side and down imaging. The units listed as DI will do down imaging only.
    2014 Phoenix 920 pro xp / Merc 250 pro xs

  3. Member Wayne P.'s Avatar
    Join Date
    Jan 2010
    Location
    Charlottesville, VA
    Posts
    30,306
    #3
    A SI unit does SI/DI/2D/ Temp with the included transducer.
    A DI unit does DI/2D/Temp with the included transducer.
    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