The Subcom 2000 Emergency Communications System is designed primarily for back-up to the umbilical wired comms generally used in diving bells.
The Subcom 2000 would be used in the event of failure of the wired system. The system provides through-water communication which does not rely on the integrity of the bell's umbilical but operates acoustically through the water column between two transducers.
With its own battery pack, it will operate for a minimum of 20 hours under normal conditions. SonaVision Subcom 2000 incorporates an extremely reliable single side-band, suppressed carrier system.
It operates at 27KHz with 4.2KHz bandwidth. All of the bell unit electronics are housed in external pressure housings to eliminate helium ingression and high humidity problems.
