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Make sure the unit has the latest software version ...
https://www.humminbird.com/faqDetail.aspx?id=3648
An external GPS antenna may also help some ...
Rickie
Rickie
Crappie.com 2016 Man of the Year
* Member Sponsor
Make sure the unit has the latest software version ...
https://www.humminbird.com/faqDetail.aspx?id=3648
An external GPS antenna may also help some ...
Rickie
Rickie
www.podunkideas.com <--Click here
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https://www.crappie-gills-n-more.com/
https://cornfieldfishinggear.com/
------------------------>> Pro Staff Sonar Advisor
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