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  1. #1
    Member
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    Feb 2017
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    Lyons New York
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    137

    Helix 7 si/gps gn1 frequencies

    I just finished the hd transducer on my jackplate and y cabled my shoot thru haul. I keep reading about switching to 455hz for side imaging. Well I can't find a answer anywhere tonight. thanka for the help Vern
    1999 Stratos 273 Vindicator
    2000 Johnson 150hp
    Humminbird Helix 7 Si
    Humminbird Helix 5 sonar
    Bonifide SS127

  2. Member
    Join Date
    Jun 2013
    Location
    Hemet, CA
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    4,658
    #2
    What is the question?
    Wes
    Helix 10 MSI+,MDI+,Ultrex IPilot
    2023 Phoenix 818
    Never assume there's a tomorrow

  3. Member Wayne P.'s Avatar
    Join Date
    Jan 2010
    Location
    Charlottesville, VA
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    30,420
    #3
    The Helix 5 and Helix 7 SI models have 455 kHz Imaging only. There is no "switching to" or from 455 kHz.

    Using the HDSI transducer does not add anything to the unit but sharper images.
    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

  4. Member
    Join Date
    Feb 2017
    Location
    Lyons New York
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    137
    #4
    Ok I was just making sure thanks Wayne for the answer
    1999 Stratos 273 Vindicator
    2000 Johnson 150hp
    Humminbird Helix 7 Si
    Humminbird Helix 5 sonar
    Bonifide SS127