jvanhorn83 Posted March 8, 2012 Posted March 8, 2012 I installed a Humminbird 597 HD GPS Combo unit in my boat last October. It says it has an internal GPS antenna but from day 1 I have never been able to get it to find my GPS postion fix. I have tried what Humminbird said and let it do a cold start but still no luck. Is there an external antenna I need? Any help would be greatly appreciated. Quote
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