Deep Marker Beacon
Deploy, mark, leave, locate
Engineered for: Structure
Our Deep Marker Beacon has been designed for low cost applications where a compact design is an important operational factor but where deep water operation is required.
Mark it, leave it, find it
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The Deep Marker Beacon enables critical targets such as underwater structures, diving bells and instrumentation packages to be marked unambiguously and later relocated using our Homer-Pro and ROV-Homer range and direction systems.
The unit operates in the HF frequency band from 35–55 kHz. External programming of interrogation address and reply frequencies are incorporated.
The transponders operate with our diver hand-held range and direction device Homer-Pro and ROV-Homer for use on remotely operated vehicles (ROVs). The diver’s/ROV’s unit interrogates the transponder to be relocated (specified by the diver or ROV pilot) and from the reply, determines both the range and direction of the transponder.
The compact design of the transponders enable normal or emergency relocation of points of interest, underwater distance measurement and small target and diver tracking.
|Feature||Type 7835-000-02||Type 7835-000-05|
|Depth Rating||4,000 m||12,000 m|
|Transmit Source Level (dB re 1 µPa @ 1 m)||>183 dB||>183 dB|
|Reply Frequency||Programmable 1–9||Programmable 1–9|
|Operating Frequency||HF (35–55 kHz)||HF (35–55 kHz)|
|Receive Sensitivity (dB re 1 µPa)||<100 dB||<100 dB|
|Switch On||Continuously operating||Continuously operating|
|Quiescent Life||Alkaline||2 years||n/a|
|Long-Life Lithium||4.5 years||n/a|
|Interrogation Address||Programmable 0–9 (1–401 optional)||Programmable 0–9 (1–401 optional)|
|Mechanical Construction||Anodised aluminium and stainless steel||Titanium grade 5|
|Dimensions (Length x Diameter)||380 x 63.5 mm (15.0 x 2.5”)||354 x 80 mm (13.9 x 3.2”)|
|Weight in Air/Water||1.9/1.2 kg||5.5/3.8 kg|