This Sonardyne LCU MF Duplex Lightweight Command Unit Acoustic Dunking Transceiver has been tested, and has been found to be faulty. This unit will be sold as spares or repairs. Cosmetically this unit has some minor marks and scratches.

Batteries were corroded with contacts rusted away.
No way to power device as we are unable to do so in our workshop environment.

Please Note - Due to multiple QTYs being stocked under this listing the locations of damage may differ.

The Sonardyne LCU MF Duplex (Type 7663) is a commercial-grade, medium-frequency acoustic dunking transceiver engineered and manufactured in the United Kingdom for offshore marine and subsea survey industries. Acting as a lightweight command unit, the device features a ruggedized underwater transducer assembly shielded by a protective cage, allowing operators to lower it over the side of a vessel to transmit and receive secure acoustic signals through the water column. Historically deployed by major oceanic data firms like Fugro GEOS, this highly specialized hardware is primarily utilized to command, communicate with, and trigger acoustic release transponders deployed on the seabed during deep-water scientific or oil and gas operations.