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Open array noise

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Ever since I first installed our Furuno NN3D 4kW 3.5' open array, it's made noise when spinning. The sound is kind of a medium pitch metallic scraping and is clearly audible on the flybridge underway. It sounds a bit like the sound I would associated with a dry bearing.

Can anyone tell me from experience whether this sound is typical?



1 Reply

  • We have noticed this noise as well and have been told it is normal. It is especially noticeable when the array is operating at close range/higher speed. If it is too annoying you can tell the Furuno MFD not to speed up the array at close range.