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Juvenile coho salmon (Oncorhynchus kisutch)
Tag
Ranging in size from 0.24g, the Lotek NanoTag represents the smallest coded VHF radio transmitter in the world today for tracking freshwater species in their natural environment.
By combining analog and digital circuitry within a single application specific integrated circuit ASIC, Lotek introduced a new level of energy efficiency, stability and reliability to the animal tracking and research community.
NanoTag permits studies of smaller species for longer periods of time, thereby reducing the impact on the species.
At the heart of the NanoTag Series transmitter lies a technological breakthrough in microcircuitry design. NanoTag brings three distinct technologies – radio, digital processing and infrared – together on a single 2.8mm2 ASIC (Application Specific Integrated Circuit). Applying thin-thick film hybrid techniques, the ASIC and advanced surface mount components are then populated on a ceramic substrate.
NanoTag’s intended biotelemetry application meets requirements long sought within the field of fisheries research for a small and highly stable coded transmitter with a long operational life.
NanoTag series radio transmitters are primarily designed for use with Lotek digitally encoded systems. Based upon a proprietary coding scheme, our coded radio telemetry systems allow over 500 transmitters to be assigned on a single frequency, while retaining the ability to identify individual animals. This capability reduces the need for additional frequencies over conventional pulse/beeper systems, with a corresponding reduction in overall scan time. Spatial and temporal resolutions are enhanced accordingly. Burst rate/intervals selected for the NanoTag transmitter can be specified in 0.1 second increments to best meet application and operational life needs. Specifying a daily activity cycle for the transmitter further extends operational life in mobile tracking studies.
Salmon smolt survival studies, fish passage/guidance efficiency studies, migration timing, monitoring small amphibians and reptiles, and lamprey.
| Model | Physical Specifications | Life [1] (days) | ||||
| Weight (g) | Size (LxWxH) (mm) | 2s interval | 5s interval | 10s interval | 40s interval | |
|---|---|---|---|---|---|---|
| NTF-1-1 | 0.24 | 9.6 x 5 x 3 | 13 | 30 | 52 | 120 |
| NTF-2-1 | 0.30 | 9.6 x 5 x 3 | 20 | 46 | 80 | 185 |
| NTF-3-2 | 0.57 | 11 x 5.2 x 5 | 46 | 105 | 185 | 428 |
| NTF-4-1 | – | – | – | – | – | – |
| NTF-4-2S | – | – | – | – | – | – |
| NTF-4-2L | – | – | – | – | – | – |
| NTF-5-2 | 1.50 | 15 x Ø 8.2 | 89 | 203 | 357 | 826 |
| NTF-6-1 | 2.50 | 19 x Ø 9 | 130 | 299 | 525 | 1215 |
| NTF-6-2 | 4.00 | 25 x Ø 9 | 246 | 565 | 992 | 2296 |
Technical specifications:
Frequency range: 147MHz to 168MHz
Operating temperature: 0˚C – +35˚C
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