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  1. 03-04-2010, 09:18 AM #1
    rsfrail
    rsfrail is offline Senior Member
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    Default 587i

    after alot of reading, back and forth I'm ready to order this unit. It is difficult to determine because everybook, sales person, and forein techie at Hummingbird says something different. Could you confirm to me on the back of your unit there is a 4th plug in port for an extra/external GR-50 gps puck.
    Thanks Ron
    Last edited by rsfrail; 03-04-2010 at 09:19 AM. Reason: type error
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  2. 03-04-2010, 01:03 PM #2
    ZILLA(walleye killa) Guest

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    Yes my unit has for plugs on the back side I am not sure if it takes your kind of gps antenna but does say you can add a external one
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