August 2004 Dolphin Communication System

This is what the prototype Dolphin Communication System (DCS) looked like in August 2004:

Box closed:

Box open:

Out of box:

Display/button unit:

Field mod: allows hot-swap of battery:

Side view: CF card:

Side view: hydrophone amplifier:

Top view: brown card is home-made pre-amp.

Connector-end view:

Empty box: