garmin fishfinder transducer on a yacht ?

Re: double skins a no no

Came up against another problem today. Found that with my FishFinder switched on, my Stowe depth unit won't work. It seems like you can't have the two running together, it's one or the other.
I guess it must be the signal from the transducer of the FishFinder, cancelling out the signal from the Stowe transducer.
 
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