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Thread: What connection is this?

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    Member Luck Duck's Avatar
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    Default What connection is this?

    I have the Smart Navi Digitalk NAV-I400B gps unit and would like to know what connector fits the external antenna hole.
    I have tried a MMCX connecter but that is too small and I have tried a MCX connecter and that is too big. The diameter of the external connection hole on my GPS is 3mm and the outside diameter on a MCX antenna is a shade under 4mm. It appears that the little lip at the end of an MCX antenna prevents that fitting.

    I thought there was only two types of connector MMCX and MCX for GPS units. I have a feeling it may be a SMB-F fitting.
    Last edited by Luck Duck; 31-05-08 at 01:06 PM.



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    Member Luck Duck's Avatar
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    Have included photo in first post.

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    Anyone know where I can find out what my external antenna connection is? The suppliers and the Korean manufacture won't help as they want me to buy their antenna and it's too dear.

    Luck Duck

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    Member Luck Duck's Avatar
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    Quote Originally Posted by Luck Duck View Post
    I have the Smart Navi Digitalk NAV-I400B gps unit and would like to know what connector fits the external antenna hole.
    I have tried a MMCX connecter but that is too small and I have tried a MCX connecter and that is too big. The diameter of the external connection hole on my GPS is 3mm and the outside diameter on a MCX antenna is a shade under 4mm. It appears that the little lip at the end of an MCX antenna prevents that fitting.

    I thought there was only two types of connector MMCX and MCX for GPS units. I have a feeling it may be a SMB-F fitting.

  • #5
    Senior Member Jaz808's Avatar
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    Isnt that for TMC, so you can plug a fm ariel in

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    Member Luck Duck's Avatar
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    Nope this model dosn't have a TMC connection. The external connetion on this unit is at the back of the built in antenna under a lift out plug.

    Luck Duck

    Quote Originally Posted by Jaz808 View Post
    Isnt that for TMC, so you can plug a fm ariel in

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    Yes it doesnt support TMC. I have the same model and wonder who made destinator 7 or map r14 r2 work on it.

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