Which echo sounder is good up to (almost) zero depth?

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First recorded activity by BoatBanter: Jul 2006

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Which echo sounder is good up to (almost) zero depth?

Del Cecchi wrote:

One could use a transducer optimized for low ringing but that would
require more electrical drive to get same acoustic power most likely.
(low Q, as the geeks say)

Low tank-Q... you're welcome.

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