I'm looking into buying my first true fish finder and I'm a little perplex with the mapping card situation. I'm looking at Humminbird Helix 5's and 7's. I'm drawn to the autochart feature. From my understanding, you can record 8 hours of charting onto the internal storage, but, is there any native mapping included on the unit or do I absolutely have to get some sort of mapping chip, zerolines or lake master, or navionics? Can I store data on a blank SD card? I've been researching this a lot and haven't found any conclusive answers. Thanks everyone!
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Luttes
Hi Everyone,
I'm looking into buying my first true fish finder and I'm a little perplex with the mapping card situation. I'm looking at Humminbird Helix 5's and 7's. I'm drawn to the autochart feature. From my understanding, you can record 8 hours of charting onto the internal storage, but, is there any native mapping included on the unit or do I absolutely have to get some sort of mapping chip, zerolines or lake master, or navionics? Can I store data on a blank SD card? I've been researching this a lot and haven't found any conclusive answers. Thanks everyone!
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