Question about Humminbird 757c Combo
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Posted on Jan 02, 2017
I found what you are looking for. Go to: http://www.humminbird.com/support/FAQ.aspx?faqid=72
You can download the operating manual.
Posted on Nov 26, 2008
You need to set the transducer lower. When at speed, the hull of the ship raises up out of the water and hence your transducer is probably not deep enough at these times to give a proper reading.
Posted on Feb 02, 2010
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