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Reviewed in the United States on May 23, 2017
I used this ferrite ring to eliminate interference from my trolling motor to my Humminbird Helix 10 SI GN2. I had done some research prior to buying it and determined that the Mix 77 ring was the one to use. Thanks to the larger diameter hole I was able to get 13 wraps of the transducer cable. I did several other modifications to the wiring on my boat at the same time but I believe the ferrite ring helped eliminate the interference.
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