Historical information

Port of Portland Collection

Physical description

Diving amplifier equipment capable of surface to diver communications for three divers. Rectangular steel case, black, handles each end, fittings for communication cables on left hand end, fittings for power supply on right hand end, control panel at front of case. Alloy knobs, speaker.

Inscriptions & markings

Front: Diving amplifier equipment/TYPE 957 SERIAL No 260/ Navy Department Bureau of Ships/ date 11-4-43/ GUIDED RADIO CORPORATION NEW YORK N.Y.