Has anyone successfully solved interference issues with Lowrance Structure Scan transducers mounted on trolling motors? I have seen it universally with Motor Guide's and Minn Kota’s. Hoping to not reinvent the wheel with a solution. My transducers are mounted as follows:
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The issue is always speed dependent whether running fixed control or variable speed motors. At slow speeds the interference worsens with Downscan; typically opposite of conventional sonar. The attached screen shot depicts split screen Sonar (200 kHz)/Downscan (800 kHz) at three trolling motor speeds…slow to fast reading left to right. Downscan interference is always greater on 800 kHz than 455 kHz. The high bypass setting on both Motor Guide and Minn Kota produces the least amount of Downscan interference.
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This screen shot depicts typical interference witnessed while applying short bursts of trolling motor power to hover over brush.
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Thanks in advance for any help and solutions.