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WHS 3250 Series - MAP Acoustic Receiver

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Lotek is pleased to offer the MAP Acoustic compatible WHS 3250 autonomous, datalogging, acoustic node receiving system.

The WHS 3250 is an affordable, lightweight, submersible datalogging receiver system that utilizes CDMA (code division multiple access) coding algorithms typically utilized in high traffic cellular telecommunications systems.

CDMA coding enables high speed manual tracking, collision and noise resistance, precise 2D/3D positioning, and unique discrimination of multiple co-located tags in high traffic/residence situations.
For researchers that use MAP acoustic systems in their studies, the advanced features translate to greater probability of detection and richer data sets that include sensor data and high resolution position tracks.

  • Autonomous, underwater node – complete with hydrophone, receiver, logger in waterproof/submersible (400 m) package
  • CDMA code division multiple access coding results in higher probability of detection
  • 250 millisecond ID burst – robust against code collision in multi-tag congregations and multi-path/echo environments
  • Over 80,000 unique ID codes
  • Supports ID and sensor data transmission (temperature, pressure/depth, motion)
  • Relative received signal strength indication
  • Remote receiver status monitoring via Bluetooth cable
  • Small, rugged form factor simplifies deployment andf recovery
  • Easy access to primary battery pack and USB for re-battery and high speed data download
  • Low cost and light weight – minimizes deployment resources required
  • Supports mobile tracking for real time data collection
  • Compatible with Lotek UMAP positioning software for continuous 2D or 3D (with depth tags) fish tracks
  • Integrated transmit beacon – provides ongoing assurance of system functionality and a means for receiver location and recovery

What does the migration behavior of Tanner Crab in the Bering Sea, Chinook Salmon and White Sturgeon in the Columbia River, Pallid Sturgeon in the Missouri River and Striped Bass from the Hudson River to the Gulf of Mexico have in common?

Over the past two decades, MAP acoustic telemetry systems have been assisting biologists and fisheries managers involved in this research, answering important questions regarding these fish behaviors.

Applications include:

  • Fish passage/guidance efficiency studies
  • Adult salmon fallback
  • Prespawn mortality
  • Fish behavior, congregation, responses to anthropogenic disturbance
  • Habitat use and species interactions
  • Migration behavior and timing
  • Continuous 2D and 3D (2D + depth tags) positioning

From monitoring reef fish behaviors in the Indian Ocean and around oil rigs in the Gulf of Mexico, to assessing the impacts of dams on fish migration in the Amazon River, researchers with leading Federal Agencies and Institutions world-wide have selected MAP acoustic systems to assist in elucidating these behaviors.

The MAP WHS 3250 now affords all researchers with a fish research and management mandate, even those working under tight budget constraints, an efficient and affordable acoustic system solution. Call us to discover more about how MAP Acoustic systems can provide a solution for your project.

Operating frequency
76 kHz
430 mm / 580 mm
60 mm
1.2 kg / 1.7 kg
Operational life*
84 days / 165 days
Depth Rating
400 m
Operating Temperature Range
0 - 50° C
Data Storage / Capacity
2 Gb Removable SD card
Power 2 (D) or 4 (L) lithium primary D-cells

* WHS 3250D / WHS 3250L based on two/four battery deployment. Operational life may vary slightly based on beacon schedule and ambient temperature.

WHS 3250 Series acoustic receiver (PDF)