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VLT-1 and TLT-1 ROV Transponders

ROV transponders are designed to be mounted on ROV, as well as other vehicles or divers that have to be tracked.  All transponders support both long baseline and short baseline acoustic tracking. However only the VLT-3 is suitable for AquaMap ROV precision navigation systems.  The TLT series miniature transponders are powered by user replaceable alkaline batteries, while the VLT series transponders feature a re-chargeable battery and can also be powered by ROV power.  All transponders also include a depth sensor which measures ROV depth more accurately than a sonar system can.   ROV Transponder Specifications  

Model VLT-1 VLT-3 TLT-1 TLT-2
Applications extended depth ROV tracking ROV precision survey; extended depth ROV tracking small ROV & diver tracking small ROV & diver tracking
Size 419 mm L x 76 mm D 419 mm L x 76 mm D 138 mm L x 70 mm D 138 mm L x 70 mm D
Sonar transducer mount on 1.5 m cable, end cap mounting optional on 1.5 m cable, end cap mounting optional on end cap on 1.5 m cable
Operating frequency 34 kHz - 42 kHz standard; other frequencies on request 34 kHz - 42 kHz standard; other frequencies on request  34 kHz - 42 kHz 34 kHz - 42 kHz
Power options internal NiCd battery or 9V-16V DC ROV power internal NiCd battery or 9V-16V DC ROV power six AA size alkaline cells, user replaceable six AA size alkaline cells, user replaceable
Operating hours per charge 20 hours 20 hours 40 hours 40 hours
Battery charge time 3 hours 3 hours n/a n/a
Zero power sleep mode yes yes no no
Depth rating options 66 to 1000 meters 66 to 1000 meters standard; to 6000 meters optional 200 meters 200 meters
Maximum working range 500 to 1000 meters 500 to 1000 meters 500 meters 500 meters
Wireless acoustic tracking yes yes yes yes
Suitable for AquaMap ROV no yes no no
Suitable for AUV navigation applications yes yes no no
Emergency recovery mode if umbilical breaks no yes no no
In-field software upgrades yes yes no no
Included accessories charger, data cable, sonar transducer charger, data cable, umbilical modem, sonar transducer none sonar transducer
Price $3600* $4200* $1600* $1900*

 
 
 * Prices are for customers in the United States & Canada. Pricing for overseas customers is 10% higher to account for the higher cost of customer support.