The ER60 fisheries sonar system’s pole mounted transducer system (the red shapes are the 38, 70 and 120 kHz transducers).
 Transducer System
Image courtesy of San Andreas Fault 2010 Expedition, NOAA-OER. Download image (jpg, 137 KB).

The ER60 fisheries sonar system’s pole mounted transducer system (the red shapes are the 38, 70 and 120 kHz transducers).

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