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
OceanTools D7 & D10 DyeTectors®
The D7 DyeTector is a state of the art subsea leak and dye detector. High-power LED light is focused through lenses and filters to create a concentrated beam that is...
Read moreThe Kailani Telemetry Buoy (KTB) implements seafloor to space communications for ocean floor instruments.
Read moreDeepWater Buoyancy is the world leader in the design and manufacture of deployment products for use with ADCP's.
Read moreUnderwater Intelligence: Exploring the Capabilities of HII’s REMUS
An Inside Look at the Evolution of HII’s Remus and BlueZone Group The REMUS Autonomous Underwater Vehicles (AUVs) are designed for a wide range of applications including naval, hydrographic,...
Read MoreBlueZone Group: A Legacy in Western Australia’s Marine Innovation
Advancing and Expanding, BlueZone Set to Open a New Site in Perth! It’s been a busy start to the year for BlueZone, between celebrating 20 years of service, training...
Read MoreA Deep Dive into TERAMARA SUBS
Enhancing Data Set Quality from Moored Current Meters Whether you’re working in the Coastal waters of the Torres Strait, out in the deep-sea offshore, or South, in the ice-prone...
Read More