Acoustic Receivers
Detect and decode transmissions from tagged fish.
Acoustic receivers are an integral component of any fish tracking study. They are used to detect and decode transmissions from acoustic fish tags and come in two types:
- Active tracking receivers are used for tracking animals in real-time from a vessel and can detect both continuous and coded transmitters.
- Passive monitoring receivers detect only coded transmitters and are moored in a fixed location for a set period of time to conduct presence/absence or fine-scale positioning studies.
The broad use of Innovasea acoustic receivers around the globe enables researchers to collaborate across studies and networks by leveraging each others’ arrays.
All receivers are built to withstand harsh and challenging conditions, are easy to use and can be upgraded in the field (field programmable).
NexTrak R1 Receiver
NexTrak R1 Receiver
Built on digital technology, the NexTrak R1 is a 69 kHz receiver that provides 40 percent greater range than earlier receivers and delivers double the detections – all while improving ease of use and providing excellent long-term value.
Frequency
69 kHz
Maximum Depth
750 m
Battery Life
13 months depending on model
Storage
5 million detections
VR2AR Acoustic Release Receiver
VR2AR Acoustic Release Receiver
The VR2AR is an acoustic monitoring receiver ideal for projects ranging from small river monitoring to multi-researcher tracking operations in the ocean.
The built-in transmitter can be used as a synchronization tag for improved fine-scale positioning results and provides a means to retrieve receiver health status from the surface while units are still deployed. The communication capability also enables researchers to remotely retrieve units using an integrated acoustic release.
Frequency
69 kHz
Maximum Depth
500 m
Battery Life
14 – 26 months depending on model
Storage
3 million detections
VR2Tx Acoustic Receiver
VR2Tx Acoustic Receiver
The VR2Tx is an acoustic monitoring receiver that is ideal for projects ranging from small river monitoring to multi-researcher tracking operations in the ocean.
The built-in transmitter can be used as a synchronization tag for improved fine-scale positioning results and provides a means to retrieve receiver health status from the surface while units are still deployed.
Frequency
69 kHz
Maximum Depth
500 m
Battery Life
14 months
Storage
3 million detections
Rx-LIVE Cabled Receiver
Rx-LIVE Cabled Receiver
The Rx-LIVE Cabled Receiver enables researchers to have a permanent, real-time communication path to the receiver allowing them to easily monitor the health status of the receivers deployed in the field and to upload data at any time.
Developed as a replacement for the VR2C Cabled Receiver, the Rx-LIVE Cabled Receiver offers significant advantages over the VR2C including a smaller form factor design, improved diagnostic information, and detection of multiple frequencies for use with 69 kHz coded tags and aquaMeasure environmental sensors.
Frequency
51 – 81 kHz
Maximum Depth
500 m
Power Supply
DC 10 – 24 V
Storage
40,000,000 detections
VR4-UWM Dual Channel Acoustic Receiver
VR4-UWM Dual Channel Acoustic Receiver
The VR4-UWM (Underwater Modem) acoustic receiver is a flexible and reliable means of recording fish telemetry data and then transmitting it to a surface unit on demand without having to retrieve the unit.
Capable of storing more than 800,000 detections, the VR4-UWM can be deployed for more than six years, making it ideal for site residency and migratory studies involving many animals over an extended period. It is especially suitable for off–shore deployments in deeper water.
Frequency
69 kHz and 180 kHz
Maximum Depth
500 m
Battery Life
19 – 118 months depending on model
Storage
800,000 detections
VR2W-180 kHz Receiver
VR2W-180 kHz Receiver
The VR2W-180 kHz is an acoustic monitoring receiver that is ideal for research projects targeting small– to medium–size species in rivers and lakes.
Capable of identifying all Innovasea 180 kHz coded transmitters, the VR2W-180 kHz receiver provides researchers with a robust, reliable means of studying the movement and behavior patterns of a wide variety of aquatic animals as they travel within freshwater systems.
Frequency
180 kHz
Maximum Depth
500 m
Battery Life
8 months
Storage
1.6 million detections
HR2 High Residency Acoustic Receiver
HR2 High Residency Acoustic Receiver
The HR2 High Residency Acoustic Receiver is an excellent choice for tracking many fish with high accuracy using our family of 180 kHz acoustic transmitters. The HR2 and HR telemetry system was designed specifically to allow researchers to monitor or position many tagged animals with sub-meter accuracy.
The HR2 can be used with existing VR2W-180 acoustic receiver arrays in collaboration with other researchers in a large-scale monitoring network or can be set up for small-scale positioning experiments.
Frequency
180 kHz
Maximum Depth
300 m
Battery Life
2-6 months
Storage
PPM/HR 170,000,000 detections
HR3 High Residency Acoustic Receiver
HR3 High Residency Acoustic Receiver
The HR3 High Residency Acoustic Receiver is an excellent choice for tracking many fish with higher accuracy than ever before using the V3 307 kHz acoustic transmitter and the HTI 795-series transmitters.
The 307 kHz system was designed specifically to allow researchers to monitor or position many tagged animals with sub-meter accuracy and to provide high performance in noisy, high flow and reflective environments, such as around hydropower facilities.
Frequency
307 kHz
Maximum Depth
300 m (440 psi)
Battery Life
2 – 6 months
Storage
HR – 160,000,000 detections
HTI – 1,000,000,000 detections
VR100-300 Tracking Acoustic Receiver
VR100-300 Tracking Acoustic Receiver
The VR100-300 is a multipurpose acoustic receiver for real-time manual tracking of aquatic animals from vessels and as a deck box for remote communication with transponding acoustic receivers.
When used with a VHTx transponding hydrophone, the VR100-300 can communicate with deployed acoustic receivers to locate units and get health and detection statistics. It’s also used to remotely release deployed VR2AR acoustic release receivers.
Frequency
12 to 307 kHz
Battery Life
12 hours
Gain Control
Automatic or manual
Signal Strength Meter
LCD displays relative signal strength numerically and graphically
VMT Mobile Acoustic Transceiver
VMT Mobile Acoustic Transceiver
The VMT is a combination acoustic receiver and acoustic transmitter that increases understanding about fish schooling cohesion, inter-species association and predator/prey interaction.
Its receiving capabilities enable it to detect other animals that have been tagged with a 69 kHz coded acoustic transmitter, while its coded transmitting capabilities allow the VMT to be detected by other deployed 69 kHz receivers.
Frequency 69 kHz
Maximum Depth 1000 m
Physical Dimensions
Diameter: 35 mm; Length: 180 mm
280 g in air; 132 g in water
Acoustic Transmitter Power Output
156 dB re 1µPa @ 1 m (L mode)
161 dB re 1µPa @ 1 m (H mode)
Battery Life 10+ months
Storage 6 million detections
Model 290 Acoustic Tag Receiver
Model 290 Acoustic Tag Receiver
The Model 290 Acoustic Tag Receiver offers a cost-effective means of remotely tracking fish in three dimensions with sub-meter position resolution.
It supports up to 16 hydrophones, receiving and storing tag detections for each. Resulting tag positions are plotted in three dimensions so the user can observe the movement of each tracked fish.
Frequency 307 kHz
Power Supply 120 – 220 VAC
System Synchronization
Can be time synced via GPS with the M291 Receiver and the M395 Data Logger
Remote Operation
Modem or satellite permits communication with receiver from anywhere in the world
Model 291 Portable Acoustic Tag Receiver
Model 291 Portable Acoustic Tag Receiver
The Model 291 Portable Acoustic Tag Receiver provides virtually all the functions of the Model 290 Acoustic Tag Receiver in a compact, economic, four-hydrophone package operating on 12 VDC.
It supports up to four hydrophones, receiving and storing tag detections for each. Resulting tag positions are plotted in three dimensions so the user can observe the movement of each tracked fish.
Frequency 307 kHz
Power Supply
12 VDC (optional 100, 120, 220 and 240 VAC converters available)
System Synchronization
Can be time synced via GPS with the M290 Receiver and the M395 Data Logger
Remote Operation
Modem or satellite permits communication with receiver from anywhere in the world
Model 305 Mobile Tag System
Model 305 Mobile Tag System
Designed specifically for mobile acoustic tag surveys, the Model 305 Mobile Tag System provides a simplified method for detection and identification of tagged fish.
Using an omni-directional or directional hydrophone, the system simultaneously detects and identifies tagged fish in real-time while recording the boat’s GPS positions in mobile surveys.
Frequency
307 kHz
Power Supply
Nickel-metal hydride battery supply
Power Consumption
1.3 watts
Maximum Cable Length
3,000 ft (914.4 m)
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