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The DH-4 provides the greatest range and precision in locating transmitters from 30kHz to 100kHz. The parabolic reflector provide 16db of gain over a comparable omnidirectional hydrophone, and yields a calculated DI of nearly 25db, reducing the effect of environmental noise. The DH-4 is the primary hydrophone for manual/active tracking. MODEL DH-4 DIRECTIONAL HYDROPHONE The DH-4 provides the greatest range and precision in locating transmitters from 30kHz to 100kHz. The parabolic reflector provide 16db of gain over a comparable omnidirectional hydrophone, and yields a calculated DI of nearly 25db, reducing the effect of environmental noise. The DH-4 is the primary hydrophone for manual/active tracking. Sensitivity: -84 dBV ref 1 uBar (-184dBV ref 1 uPascal). Beam Width: +/-6 degrees at half power points. Shaft Length: User supplies mounting shaft. (1 inch PVC) Output: BNC connector. Cable: Replaceable 10’ RG-58 C/U. Links: DH-4 Manual Active Tracking Hydrophones Data Sheet VIDEOS

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. Eyelets allow attachment of small weights or diving lures to ensure the hydrophone is kept at depth while trolling. This design, though simple, rivals more elaborate and expensive systems in actual field trials. MODEL TH-2 TOWED OMNIDIRECTIONAL HYDROPHONE 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. Eyelets allow attachment of small weights or diving lures to ensure the hydrophone is kept at depth while trolling. This design, though simple, rivals more elaborate and expensive systems in actual field trials. Sensitivity: -100 dBV ref 1 uBar (-200 dBV ref 1 uPascal) Beam Width: Omni-directional +/- 2 dB. Output: BNC connector. Cable: 50’ RG316/U. Links: TH-2 Manual Active Tracking Hydrophones Data Sheet VIDEOS

The CUB-2BT is a combination of a passive receiver and communications system allowing for near real-time monitoring of areas with cell phone coverage. CUB CELLULAR UPLINK BUOY / NO LONGER AVAILABLE This product is no longer available

The USR-23 is an active tracking receiver with new features to locate ultrasonic transmitters manufactured by SONOTRONICS, Vemco or Lotek Wireless. USR-23 ULTRASONIC RECEIVER The USR-23 is an active tracking receiver with new features to locate ultrasonic transmitters manufactured by SONOTRONICS, Vemco or Lotek Wireless. USR-23 Features Include: Digital display Waterproof Pelican Case (1150) Internal detection audio alarm Compatible with passive data loggers Optional dual hydrophone input Optional GPS input with position logging ACT and Rcode decoding (thus being able to locate ultrasonic transmitters manufactured by SONOTRONICS, Vemco or Lotek Wireless.) Compatible with SURsoft data analysis tool for SONOTRONICS logging receivers. Links: USR-23 Manual Receiver Software VIDEOS

Sonotronics Software Downloads | Acoustic Transmitters SONOTRONICS SOFTWARE DOWNLOADS Sonotronics Software Downloads for the SUR and SURsms SUR - Windows Windows PC Downloads for the Submersible Ultrasonic Receiver (SUR) SUR - Android [BETA] Android Mobile Downloads for the Submersible Ultrasonic Receiver (SUR) - [Currently in BETA] SURsms - Windows Windows PC Downloads for the Submersible Ultrasonic Receiver SMS Box (SURsms) RovR - Windows Windows PC Downloads for the ROV mountable Ultrasonic Receiver (RovR) Legacy Support

Sonotronics acoustic receivers and transmitters news and announcements. ANNOUNCEMENTS Upcoming Shows and New Product Announcements MO: Module Only Generators The 2 wire version of the CHP-MO-HP will begin transmission of a coded sequence as soon as power is applied, and alternatively a 3 wire version is available that allows separate transmit control. AVAR: Autonomous Vehicle Acoustic Receiver The AVAR may be operated as an independent unit for short term deployments using its on-board battery, or may be connected for long term power and real-time communications with an external controller. Providing excellent customer service and offering state of the art Acoustic Tracking Equipment, we are “working together to make a difference in the world we share.” All Sonotronics Fisheries transmitters are available with the new Open Protocol (OP) as approved by the European Tracking Network (ETN) Sonotronics receivers are now able to receive and detect OP coded transmitters from Sonotronics and other manufactures Existing Sonotronics Receivers may be retrofit to utilize this new telemetry standard Look for a new long-life single frequency receiver, deep water rated, with removable media to quickly transfer collected data! More information about the advantages of the new OP protocol may be found on the European Tracking Network website: http://www.europeantrackingnetwork.org/compatibility Upcoming Shows & New Product Announcements Bluetooth is now an available option on our SUR product We are pleased to announce our new CUB SUR now equipped with the capability to directly decode ‘Rcode’ transmitters GSA Purchasing The Don L. Brumbaugh Memorial Equipment Scholarship The Sonotronics’ Equipment Scholarship, established in 2005, commemorates Donald L. Brumbaugh’s pioneering work in the development of fisheries and wildlife biotelemetry technologies. The scholarship is designed to aid student(s) in fisheries research projects. Read more…

Passive Underwater Acoustic Tracking - Submergible Ultrasonic Receivers and Transmitters. PASSIVE TRACKING Transmitters CHP High Powered 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… CT Standard Coded Transmitters 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… CTT Temperature Telemetry Transmitters Temperature telemetry transmitters allow for the telemetry of temperature in the vicinity of tagged animal in addition to location and identification. More… DT Depth Telemetry Transmitters 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… IBT Miniature Transmitters Miniature transmitters function identically to the coded transmitters, but are very small in size. This allows tracking of very small species. More… PT PicoTag Subminiature Transmitters These new very small transmitters allow for attachment to smaller animals than every before. More… Receivers miniSUR Submersible Ultrasonic Receiver This small, inexpensive, long life unit allows for detection of fish passage within its detection area. More… SUR Submersible Ultrasonic Receiver This rugged, inexpensive, long life unit allows for detection of fish passage within its detection area. More… Hydrophones DH-4 Directional Hydrophone The DH-4 provides the greatest range and precision in locating transmitters from 30kHz to 100kHz. More… TH-2 Towed Omnidirectional Hydrophone 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…

Coded transmitters generate a unique aural sequence, as well as unique combinations of frequency and ping interval allowing detection by both passive and active receivers. The CT series of transmitters offer an excellent value with a choice of long life, good range, and small size. CT CODED TRANSMITTERS Coded transmitters generate a unique aural sequence, as well as unique combinations of frequency and ping interval allowing detection by both passive and active receivers. The CT series of transmitters offer an excellent value with a choice of long life, good range, and small size. Coded Transmitters Notes Range is typical under good conditions, using a Sonotronics active receiver and directional hydrophone. Autonomy based on a ping rate of once per second. Extend lifetimes are available by cycling the transmitters, please contact Sonotronics for more details -E is the extension denoting external mount, -I denotes internal implant. Please specify internal or external when ordering transmitters. Links: CT Data Sheet VIDEOS

Small acoustic fisheries transmitters | Acoustic Transmitters IBT SERIES MINIATURE TRANSMITTERS Range up to 500m+ IBT-96-1, IBT-96-2, IBT-96-9 IBT-96-9 (shown) Notes The typical rule of thumb is to use transmitters that have a weight in water that is 1.5 – 2% of the fish weight in air. Weight in O2 (air) is put only as additional reference. All dimensions for internal implant. Mounting holes for external use available upon request. Links: VIDEOS

Sonotronics is now offering versions of its acoustic transmitters as modules that use external power sources. MO: MODULE ONLY GENERATORS CHP-MO-HP Sonotronics is now offering versions of its acoustic transmitters as modules that use external power sources. The CHP-MO-HP may be mounted on an instrument package or underwater vehicle, taking advantage of existing onboard power sources. The 2 wire version of the CHP-MO-HP will begin transmission of a coded sequence as soon as power is applied, and alternatively a 3 wire version is available that allows separate transmit control. Key specs: 16mm (dia) x 40mm (length) External Supply: 2.8V-5.5VDC 75ma max, 2ma ave Frequencies: 32-40kHz, 69-83 kHz, crystal controlled Source level: up to 150db re 1uPascal @ 1m EMT-01-3HP-MO 32mm (dia) x 85mm (length) External Supply: 4.5V-15VDC 500ma transmit Frequecies: 32-40kHz crystal controlled Source level: up to 165db re 1uPascal @ 1m 4 wire (1m water blocked, jacketed cable) V+ = Red GND = BLACK Control+ (C+) = Orange GND = Brown Operation: with power applied to Red/Black, C+ open = off, C+ to GND = transmit