JSATS AMT - Juvenile Salmon Acoustic Telemetry System Acoustic Micro Transmitter
- Overview
- Details
- Specifications
- Product Sheet
The Lotek JSATS AMT – Juvenile Salmon Acoustic Telemetry System Acoustic Micro Transmitter – was developed to satisfy the research and regulatory requirements for monitoring juvenile salmon in the Columbia River Basin.
This acoustic transmitter’s small size and relatively long operational life permits tracking of sub-yearlings throughout their natural environment while minimizing impact upon them.
The Lotek JSATS AMT acoustic tag is compatible with JSATS receiving systems and utilizes a Binary Phase-Shift Keying (BPSK) coding system that allows for tens of thousands of unique IDs on a single acoustic frequency. Each transmission consists of an ID and check sum delivered in less than one millisecond, thereby minimizing the probability of mis-identification or interference from code collision.
Key features:
- Small size and light weight (0.27g) - suitable for small fish and sub-yearling applications
- Over 65,000 unique Ids - embedded check sum reduces error rate
- Sub-millisecond ID message length provides long life and reduced “code collision” rate
- Used for autonomous monitoring presence/absence
- Used for wireless positioning in 2D via Lotek ALPS asynchronous logger positioning system
- Now available as J-CART combined acoustic/radio transmitter compatible with
SRX (400/600/DL) radio receivers
| Lotek JSATS AMT Juvenile Salmon Acoustic Telemetry System Acoustic Micro-Transmitter |
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| TAG MODEL | Physical Specifications | Calculated Life (Days)* (with given transmission period seconds) |
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| Size (l x w x t) (mm) | Dry Weight (g) | 2s | 5s | 10s | 20s | 60s | |
| L- AMT-1.416 | 10.5 x 5.2 x 2.8 | 0.27 | 11 | 27 | 51 | 93 | 204 |
| L- AMT-1.421 | 10.5 x 5.2 x 4.0 | 0.30 | 16 | 40 | 77 | 140 | 306 |
| L-AMT-2.1 | 12 x 5 x 4 | 0.43 | 19 | 46 | 86 | 149 | 295 |
| L-AMT-5.1 | 13 x 7 x 7 | 0.95 | 68 | 162 | 300 | 522 | 1033 |
* Calculated life represents expected or average life.
Warranty Life is 80% of calculated life.
Transmitters that do not meet the warranty life during normal use will be replaced.
Product specifications provided herein are subject to change as a result of ongoing product development. Please contact your Lotek sales representative for current specifications.
| Surface Roughness: | Smooth and devoid of sharp edges or protrusions |
| Coating: | Parylene-C (25 microns min. thickness) or alternate field proven encapsulation |
| Biocompatibility: | Biologically inert coating |
| Shape: | See photograph in "Overview" tab |
| Transmitter frequency: | 416.7 kHz ± 0.5% |
| Transmitter power: | Minimum source level of +150 dB (re: uPa @ 1 meter) |
| Pulse Repitition Interval (PRI): | Factory configurable - 1 second minimum / 1 second increments |
| ID Message encoding: | 31-bits, BPSK, with format as follows: 1. 7-bit Barker code (ox72) 2. 16-bit tag ID code (0x0000 – 0xFFFF) 3. 8-bit cyclic redundancy check (CRC), (oxFF) |
| ID Message length: | 744 microseconds |
| Number of possible tag ID codes: | 65,536 |
| On/off switch: | Non-contact acoustic trigger device, i.e. no exposed wires; tags are fully encapsulated when delivered. |
| Transmitter label: | Discernable 4-character code representing the 16-bit tag ID code (0xFFFF) |
Prior to delivery, 100% of all transmitters are tested for adherence to dimensional and dry weight specifications, acoustic source level, code sequence and transmit interval.
AMT Pre-Delivery Screening:
A permanent record1 is kept of the test results to include the above information as well as the date of the test, and the technician performing the test.
Shipment of AMT:
Transmitters are separated in the shipping box using shock absorbing high density anti-static foam.
