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humminbird helix 7

  1. Electronics
    OK: I have a Helix 5 on the bow of my boat. It uses the transducer in the cone of my trolling motor. It's working tip top. A Gen2 Helix 7 with DI (no SI) is in the main console. Transducer was professionally mounted in December of 2018 off the back of my transom. The problem is that the...