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Fish finder questions


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Considering replacing my Garmin Echomap 73 SV with the Hbird Helix 9 G2 Mega SI. Main reason for the change is so I can network with a  new unit at the bow. 

I may keep the Garmin for now so that I can still follow old trails and have all kf my waypoints. 

1.Will a second transducer create interference or other issues?  

2.Can you run two side image ducers at the same time?

3.I’ve read that the Helix struggles to read depth when moving faster than 10mph. Has anyone noticed an issue with that?

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