TBR 800 product description

TBR 800 is a robust, low-power, standalone digital acoustic receiver that utilizes state-of-the-art digital signal processing technology to operate in the 63-77 kHz frequency range. Used in combination with Thelma Biotel transmitters the receiver will be able to support new and user-adaptable code sets to fit your special needs. Together with the DeckBox Field kit, the TBR 800 can transmit and send status updates with information regarding battery status and power consumption upon request. The TBR 800 comes with a built-in synchronization transmit (sync tag), which can be customized by the user in ComPort. The user can select parameters such as transmit interval, transmit power, and frequency. The synchronization signal requires a negligible amount of battery power and does not affect the battery life of the receiver significantly.

Rugged casing

The receiver is robust in its design and can be used in lakes, rivers, fjords, or the ocean down to several hundred meters in depth. Precision milled Delrin© is used in the pressure hull and battery compartment to ensure maximum ruggedness. The TBR 800 is designed with ease of use and efficiency in mind. To provide the means for a secure attachment during deployment, we have put in two deep grooves and a hole through the bottom. Attachment points are placed on the base housing for batteries to be replaced while the unit is still attached to its mooring line. The housing is fitted with a stainless steel threaded bolt, making it quick to open and close with a standard screwdriver, drill – or even a coin. A protective hoop on the transducer tip is added to make the receiver withstand hard hits or drops. The TBR 800 can convert to the acoustic release system. The TBR 800 Release is a modular extension to the TBR 800 standalone receiver. The motor unit and the extended casing enable the active mechanical release mechanism.

Less code collisions and greater detection range

The TBR 800 is a powerful digital acoustic receiver with a modular design. It uses state-of-the-art digital processing optimized for maximum reception. The TBR 800 has a ~2 dB increased signal-to-noise ratio, as well as twice the storage space (3 million detections), compared to the TBR 700. The upgraded signal processing capacity results in an even greater detection range. It dynamically adjusts the signal threshold levels to increase performance in challenging conditions where high noise levels are present, such as ambient and biological noise. Multichannel reception ensures that weak signals do not interfere with stronger signals, significantly reducing the number of signal collisions, which is often seen with similar technologies. The TBR 800 logs the signal intensity of every detection, which provides information on signal detection conditions and the approximate range/distance.

Wireless data transfer and no power cable assembly

The tag data is conveniently accessible through Thelma Biotel’s interface software, ComPort, using a wireless Bluetooth connection. ComPort supports fast download of data, export to .csv, intuitive filtering, and graphical display of data. Intuitive LED signals confirm whether the receiver is ready to be deployed or not. Powered by standard, off-the-shelf DD batteries without wires or connectors, this receiver supports continuous deployment for 24 months. A separate circuit keeps the receiver timestamp with a backup power source, so the clock does not need to be reset after a battery change.