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Thread: Hummingbird question

  1. #1
    Senior Member Tom Chopin's Avatar
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    Hummingbird question

    If I'm installing a 998 and a 958 with an Ethernet cable will they run off one GPS antenna or do you need to install both GPS antenna? or do I need to use a splitter of some kind and run a cable to each unit?


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    Thanks to Freedom Tackle, Eco Pro Tungsten, Bio Edge

  2. #2
    Senior Member
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    They will run off one antenna, but if the antenna runs to the 998 for example, it needs to be powered on for the 958 to read it.

    Ed
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  3. #3
    Senior Member PinoMaida's Avatar
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    Quote Originally Posted by Tom Chopin View Post
    If I'm installing a 998 and a 958 with an Ethernet cable will they run off one GPS antenna or do you need to install both GPS antenna? or do I need to use a splitter of some kind and run a cable to each unit?


    Thanks!
    Hey Tom, I run a similar set up, but I went with two GPS pucks, one in the front and one in the rear, I would think the dedicated units would be more accurate with using their own puck as close to the Humminbird unit as possible.

  4. #4
    Yes, they can run off one antenna, but the refresh rate is faster using a separate antenna to each unit.

  5. #5
    Member JohnEHall's Avatar
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    Like Pino & Joel I run a puck for each unit. Issue is puck should be located as close to transducer as possible for waypoint accuracy. If transom or thru-hull transducer & you mark waypoint from the bow unit, you're already off by up to 21'. Using 1 puck is fine as long as the potential for error is understood &/or absolute accuracy isn't a big concern.

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