PASSIVE TRACKING
Transmitters
High powered transmitters function identically to the coded transmitters, but have a very high power output. This allows tracking of pelagic species and tracking in large or open water areas. More…
Standard coded transmitters ping an aural code for easy audible detection by researchers. These transmitters for unique identification of thousands of animals by varying combination of frequencies, codes, and pulse interval (time between pings). More…
Temperature telemetry transmitters allow for the telemetry of temperature in the vicinity of tagged animal in addition to location and identification. More…
Depth transmitters allow for telemetry of animals depth to arrive in real time, as well as location and identification via similar coding to the coded transmitters. More…
Miniature transmitters function identically to the coded transmitters, but are very small in size. This allows tracking of very small species. More…
These new very small transmitters allow for attachment to smaller animals than every before. More…
Hydrophones
The DH-4 provides the greatest range and precision in locating transmitters from 30kHz to 100kHz. More…
​The TH-2 provides a simple method for mobile active tracking: its small size and hydrodynamic shape allows for trolling at speeds up to 5 knots, while the long cable length minimizes the affect of engine and prop noise. More…