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Dunker 6

LBL and telemetry transceiver

Engineered for: ROV, Vessel

Dunker 6 is an LBL and telemetry transceiver specifically designed for vessel deployment. The super duplex stainless steel housing with shock and vibration isolated electronics makes for an extremely rugged dunking system.


At a glance

Perfect for commanding LBL transponders

Use it to recover data from Fetch and AMTs

Capability to operate as topside for RT 6 acoustic releases

Deploy it over-the-side of your vessel

Rugged mechanics and connectors

Shock mounted internal electronics

Built for LBL and data harvesting

Want to know more?

Overview

Its high power output and Wideband 2 signal processing offers improved operating range and acoustic performance in challenging conditions such as when deployed from noisy vessels or in multipath environments.

The internal Lithium-ion rechargeable battery pack minimises the supply current for long dunker cables. It also enables relocation of the dunker if the cable is cut.

The robust AGP connector on the Dunker 6 is identical to the ROVNav 6 and HPT USBL for compatibility and to reduce spares.

Dunker 6 LBL and telemetry transceiver is fully compatible with our modem and sensor logging instruments such as AMT and Fetch , allowing it to be used to retrieve data or configure logging regimes. It can also be used to release the RT 6 range of acoustic releases.

The Dunker 6 system consists of 100 m of cable on a stainless steel cable drum with brake and locking mechanism. The 10 m deck cable between the 48 V Surface Interface Unit (SIU) and the cable drum allows the drum to be conveniently located. The connection to the cable drum is via an easily replaceable 8-way SubConn.

Optionally, an RT 6 topside kit with 30 m of cable is available in a carrying case without a cable drum.

Resources

Feature Type 8309-1351 Type 8309-1353 Type 8309-1355 Type 8309-1356
Depth Rating 1,000 metres 1,000 metres 1,000 metres 1,000 metres
Operating Frequency MF (21–32.5 kHz) MF (21–32.5 kHz) LMF (14–19 kHz) LMF (14–19 kHz)
Transducer Beam Shape Omni-directional Directional Omni-directional Directional
Transmit Source Level 
(dB re 1 µPa @ 1 m) 187–196 dB (4 levels) 190–202 dB (4 levels) 187–196 dB (4 levels) 187–202 dB (4 levels)
Tone Equivalent Energy (TEE)* 193–202 dB 196–208 dB 193–202 dB 193–208 dB
Receiver Sensitivity (dB re 1 µPa) 90–120 dB (7 levels) 80–120 dB (7 levels) 90–120 dB (7 levels) 80–120 dB (7 levels)
Range Precision Better than 15 mm Better than 15 mm Better than 15 mm Better than 15 mm
Serial Communications (Software Programmable) Primary port: RS485 (half-duplex) or RS232 Secondary port: RS485 (half-duplex) or RS232 or SYNC IN Primary port: RS485 (half-duplex) or RS232 Secondary port: RS485 (half-duplex) or RS232 or SYNC IN Primary port: RS485 (half-duplex) or RS232 Secondary port: RS485 (half-duplex) or RS232 or SYNC IN Primary port: RS485 (half-duplex) or RS232 Secondary port: RS485 (half-duplex) or RS232 or SYNC IN
Operating Voltage 24 or 48 V dc (±10%) 24 or 48 V dc (±10%) 24 or 48 V dc (±10%) 24 or 48 V dc (±10%)
External Power Active (listening) Peak (during transmission) <3 W typical (max 6W when charging) <80 W <3 W typical (max 6W when charging) <80 W <3 W typical (max 6W when charging) <80 W <3 W typical (max 6W when charging) <80 W
Battery Life Li-ion (Listening) 3 Days 3 Days 3 Days 3 Days
Mechanical Construction Super-duplex stainless steel Super-duplex stainless steel Super-duplex stainless steel Super-duplex stainless steel
Dimensions ; Length x Diameter 692 x 200 mm 660 x 200 mm 586 x 200 mm 641 x 230 mm
Weight in Air/Water** 24/16 kg 26/17 kg 20/14 kg 28/17 kg
Connector Type AGP (8-way female)

Software and firmware

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Built for LBL and data harvesting