Focus - Directional Amplifier Field Kit
The Thelma Biotel Focus – Directional Amplifier Field Kit is a precision-engineered acoustic reflector that fits seamlessly over the standard Live transceiver. It delivers powerful signal amplification within ±15° of your target. Designed for use with the DeckBox, the Focus extends your operational range and pinpoints the bearing of any acoustic transmitter. It is essential for maintaining a safe communication distance when working with the TBR 800 Release – Deep model, and we recommend it for all Release receivers operating at depths greater than 200 m.
Specifications
| Specification | Value | Remark |
|---|---|---|
| Length | 102 mm | |
| Diameter | 124 mm | |
| Weight | 160 g | |
| Bouancy | 150 g | |
| Maximum depth | 10 m | |
| Optimal Target Reference Angle | ±15° | |
| Maximum Target Reference Angle | 60° | Outside of 60 degrees from the target, the signal becomes weak or completely muted. |
Frequently used together
Live
Live is a digital, multi-frequency receiver (63–77 kHz) with precise millisecond-level timestamping for fine-scale positioning. It instantly transmits detections via RS-485, and its compact, rugged design makes it ideal for harsh environments where space is limited. Designed with a strong focus on energy efficiency, Live can operate directly from your field laptop or run for months - or even years - on small battery packs.
TBR 800 Release
TBR 800 Release is a robust, low-power digital acoustic receiver operating at 63–77 kHz. Used with Thelma Biotel transmitters, it supports customizable code sets. It features an acoustic release module that can be triggered when paired with the DeckBox
TBR 800 Release Deep
The TBR 800 Release Deep features a motorized release three times stronger than the standard version, ensuring reliable operation under high pressure. The release is triggered acoustically from the DeckBox.
DeckBox Field Kit
The DeckBox is a versatile topside kit for manual logging of acoustic transmitters, retrieving TBR 800 Release units, and performing status checks on deployed equipment. With its rugged, waterproof tablet and our free LiveView software, you get flexible, real-time control and monitoring right in the field.
Downloads
Focus Kit Datasheet
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