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Navionics map offset on Humminbird helix 7 - Walleye Message Central
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Old 05-08-2018, 09:47 AM
sayant sayant is offline
Minnow
 
Join Date: May 2018
Posts: 1
Exclamation Navionics map offset on Humminbird helix 7

Hello, I just bought the navionics card for my Helix 7. I downloaded the cards and inserted them in my sonar. Once on the lake I realized that the lake map is about 250 feet from the actual shoal position. I was wondering if anyone ever had a problem or if you have any idea of how to fix it. My friend has the same sonar and the same map but this GPS position compared to the navionics map is good.

thank you,
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gps , maps , offset , sonarcharts

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