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Dunker 6+

LBL and telemetry transceiver

Engineered for

ROV Vessel
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Overview

Built for LBL and data harvesting

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.

Overview

Its high power output and Wideband 3 signal processing offers improved operating range and acoustic performance in challenging conditions such as when deployed from noisy vessels or in multi-path 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.

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

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.

Want to know more about Dunker 6+? Speak to an expert.

Specifications table

Feature Dunker 6 Type
8309-1351 / Dunker 6+ Omni-directional		 Dunker 6 Type
8309-1353 / Dunker 6+ Directional		 Dunker 6 Type
8309-1355		 Dunker 6 Type
8309-1356
Depth rating 1,000 m 1,000 m 1,000 m 1,000 m
Operating frequency MF (20–34 kHz) MF (20–34 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) <3 W typical
(max 6 W when charging)		 <3 W typical
(max 6 W when charging)		 <3 W typical (max 6 W when charging) <3 W typical (max 6 W when charging)
Peak (during transmission <80 W <80 W <80 W <80 W
Battery life Li-ion (listening) 3 days 3 days 3 days 3 days
Connector type AGP
(8-way female)		 AGP
(8-way female)		 AGP
(8-way female)		 AGP
(8-way female)
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
System kit
Dunker 6, SIU,
100 m cable drum etc.		 602-0047
(8309-1351)		 602-0053
(8309-1353)		 n/a 602-0072
Dunker 6+, SIU,
40 m cable drum etc.		 602-0135
(Dunker 6+
Omni-directional)		 602-0198
(Dunker 6+ Directional)		 n/a n/a

Frequently asked questions

6G Terminal Lite Range Test

Does the Dunker 6+ main connector require any maintenance?

STP files

Dunker 6+ – STP Files

Software and firmware

Dunker 6+ – Firmware

Software and control hardware

6G Terminal Lite Range Test

Datasheets

Dunker 6+ – Datasheets

Manuals and quick start guides

Dunker 6+ – Manuals

Did you know?

Dunker 6+ can be used to recover data from Fetch and AMTs

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