In Reply to: RE: Anyone Like to explain how this works? posted by PAR on December 16, 2016 at 10:18:09:
That's a transducer. A transponder works in the opposite direction. As a pair, operated under water, they are called sonar.
Edits: 12/16/16
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- RE: Anyone Like to explain how this works? - Frihed89 13:43:58 12/16/16 (0)