Transponder and Interrogator compatible with Sonardyne systems
Commercial diving companies operating in an area that requires their diving bell to meet offshore standard DNV-OS-E402, must have an emergency locating system that meets section 305 of that standard.
RJE International provides the ATT-400/AODC transponder – a small battery operated underwater acoustic device, which is used to mark commercial diving bells for emergency relocation to depths of 1000 meters. The interrogation frequency is factory set to 38.5kHz (Ch-A) or 39.5kHz (Ch-B) and, when interrogated, replies to the pre-set emergency frequency of 37.5kHz and meets the DVN-OS-E402 standard.
A diver held interrogator for the transponder, the DTI-300/AODC interrogator is also available. To ensure a smooth transition, the ATT-400/AODC transponder is compatible with the older Sonardyne systems and can be located with the Ranger2 USLB system and Homer-pro receivers presently in use and fielded.
![]() |
| AODC Transponder and Interrogator for Diving Bells. |
Up to 25-hour mission duration
Speeds up to 4.2 knots
Increased module payload capacity
Search and recovery
Hydrography
Deep sea mineral exploration
Marine & Fisheries research
The DPR-275 Diver Pinger Receiver is a small and rugged handheld diver acoustic receiver with an LCD display and signal strength meter that can track and locate any acoustic pinger...
Read moreHardBall® Float Subsea Buoyancy
DeepWater Buoyancy’s Hardball® Floats provide subsea buoyancy for a wide variety of oceanographic applications.
Read moreULB-362C Series Underwater Locator Beacon
The ULB-362C is a compact, cost-effective, full ocean depth underwater locator beacon designed for applications where size is critical.
Read moreFrom Depths to Discovery: Xeos Petrel X3 Enhances Oceanographic Operations
As oceanographers push deeper into uncharted waters, the Xeos Petrel X3 emerges as a vital lifeline; ensuring that even the most remote underwater assets find their way home. In the...
Read MoreSeeTrack: The Defence Ready Command and Control System for Maritime Autonomy
In an era where robotic systems define naval superiority, SeeTrack stands at the centre: Uniting AUVs, ROVs, and operators into one powerful defence ecosystem As autonomous technologies reshape the...
Read MoreDeepSea Power & Light We would like to inform you that the SeaLite Sphere SLS‑7200 has officially reached end‑of‑life and is no longer in production. This decision follows the...
Read More